# Physics

### All Physics Questions

- Final paper
- DYNAMICS
- physics
- Physics Lab
- How does one derive equations to get to this equa
- In circuits, Ohm's law implies that:
- 1-The concept of thermionic emission is the basis
- objective question solved from various topics in physics
- 2 cars start from the same spot with velocity u1
- with the idea of conservation of momentum explain
- A device known as Atwood\'s machine consists of t
- If the average velocity of an object is zero in s
- A car is driving west on a highway at 25m/s. What
- "Aerodynamic Forces and Energy" Please respond to
- Please help me to solve my Statistical Optics hom
- Homework5
- Q1) Romeo is pining away wanting to talk to Julie
- Write the expression for pressure exerted by a li
- A Cliff divers at Acapulco jump into the sea from
- A person standing at the edge of a seaside cliff
- water flows through a 2 in. opening in the side o
- Single charged sodium ions are accelerated throug
- if two vectors have magnitude of 5 and 12, respec
- A sphere s having mass of 50g and it's radius s 2
- ELASTIC COLLISION OF CARS
- BALLS FALLING OFF TABLE
- Physics 1210: College Physics I Unit 6: Conservation of Energy Lab
- Physics 1210: College Physics I Unit 9: Buoyancy and Fluid Dynamics Lab
- Lab 5- Conservation of energy
- sosi
- Physics help please
- "Nanotechnology and Rare Earth Elements" Please respond to the following:
- nanotechnology
- Rod with 2 masses
- Vector and scalar
- he drawing shows an ideal gas confined to a cylinder by a massless piston that is attached to an ideal spring.
- Dimensional Analysis and convetion
- Dimensional Analysis
- Order-of-magnitude estimates
- Dimensional analysis
- Friction
- A car has an initial speed of u m/s. The car a
- Physics :Compressional Stress
- Velocity, Lab Assignment help
- What is the translational speed of the object?
- physics lab worksheet, homework help
- explain statement of Gauss law, physics question help
- Physic
- this question is on a physics course electricity and magnetisim
- write the units of mass in mks, physics homework help
- Limits can be difficult to grasp, but they don’t need to be, assignment help
- Need help with simple pendulum lab
- what are the prospects for controlled thermonuclear fusion, essay question, physics homework help
- Define magnetism, homework help
- How many bones do sharks have in their bodies?
- Who was the invented the jet engine?, homework help
- Electric resistance is typically measured in what units, physics homework help
- What is the right SI unit of pressure, question help
- Ballpoint pen, physics homework
- Equilibrant of two forces
- physics lab worksheet help, assignment help
- Compare the slope of the distance vs. time graph to the average of all your velocity values, physics homework help
- Which of these follows from Kepler's laws of planetary motion, physics homework help
- Motion in two dimensions, paraphrasing help
- explain statement of Gauss law, physics question help
- the energy crisis
- International Space Station
- PHY-102: Energy and Circular Motion Exercises
- What is the maximum Weight that can be lifted if the counterweight on a tower crane if the load is...
- Physics
- Conflicting Viewpoints Essay, physics homework help
- Webassign physics online assignment help
- In a scene in an action movie,
- explain statement of Gauss law, physics question help
- 12th Grade Physical and Earth Sciences Project Mini Lab
- Theory worksheet(Science investigation)
- Need physics help with paraphrasing and adding a lab on the coefficient of friction.
- anyone could help with pulley project
- A magnifying glass is what type of lens?,physics essay question help
- I need someone to paraphrase my lab report
- Physics 1
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- Wendy Lewis only 2
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- spherical coordinates, physics homework help
- Only for Ateek
- Physics lab worksheets..
- Physics Labs
- World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude15m/s2.1)How much...
- express the follow quantites n scientific notation a. 4501b. 75,000c.6438 gd.0.6438 ge.0.000048 gf.24 h
- Determine the momentum of a 0.45 caliber bullet (m= 0.162 kg) leaving the muzzle of a gun at 860 m/s
- Needed for today.
- Amblyopia
- state how many significant figures are in 2500mg of magnesiumstate how many significant figures are in 15.50mg of potassiumstate how...
- Physical Science 50 ( Introduction to Weather) CH 11, 10th edition
- A roller coaster moves 85m horizontally,then travels 45m at an angle of 30.0 degrees above the horizontal. What is its...
- A20-kgloudspeaker is suspended2.0mbelow the ceiling by two ropes that are each30âfrom vertical what is the magnitude?
- Physics lab report Electric Field Mapping
- At the top of a hill "f" the rollercoaster crests the 5.0 meter radius curve at 6.0 m/s. The mass...
- What do we call a projectile that Continually "Falls" Around Earth
- Statement of purpose
- 14 questions on webassgin phys
- Acceleration
- Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.0923 N when their center-to-center...
- How do I solve this question?
- Physical Science Homework help?
- High School Physics
- A ball is thrown vertically upward and then comes back down. Describe the behavior of the ball’s velocity and acceleration.
- Wendy Lewis only 1
- Wendy Lewis only 2
- physics homework
- High School Physics
- A runner hopes to complete the 10,000-{\rm m} run in less than 30.0 {\rm min}. After running at constant speed...
- Help with discusion
- Physics QUESTIONS
- A small mailbag is released from a helicopter that is descending steadily at 2.42m/s.
- An electron (m=9.11x10-31 kg) moves in a circle whose radius is 2.00 x 10-2 m. If the force acting on...
- Projectile Motion
- How do you convert pounds into newtons?
- What are some examples of refraction of light?
- How are work and power related?
- How does a wedge work?
- What color of light has the longest wavelength?
- What does a catapult do?
- How did quantum mechanics change our understanding of atoms?
- Where are the magnetic fields strongest near a bar magnet?
- What units of measurement are used to describe density?
- What color of visible light has the shortest wavelength?
- When will an object falling toward earth stop accelerating?
- Is it possible to add a scalar to a vector? Why or why not?
- What are some examples of application of the Bernoulli's Principle?
- What color of light has the highest frequency?
- What are some examples of acceleration?
- What do the different colors of visible light represent?
- Structure of an atom valence electrons
- The students will collect data from www.boxofficemojo.com using the Box Office/All Time reports; additional information could be found on www.IMDB.com...
- General Physics
- A jogger accelerates from rest to 3.0 m/s in 2.0 s. A car accelerates from 38.0 to 41.0 m/s also...
- physicsJob
- What are some examples of simple harmonic motion?
- How can I make a calcium atom model?
- Why does a speedometer measure instantaneous speed rather than instantaneous velocity?
- Why is momentum considered a vector quantity?
- What is a solenoid?
- What is the SI unit of acceleration?
- How do you calculate average speed?
- A person 1.80 m tall stands in front of a plane mirror. What is the minimum height of the mirror, and how high must its lower edge be above the floor for the person to be able to see his/her whole body? Person’s eyes are 6.0 cm below the top of the head.
- Is a concave mirror converging or diverging?
- Who discovered X-rays?
- If one square mile is 640 acres, how many square meters are there in 1 acre?
- What is the speed of light in water? in glycerine?
- What are some examples of convex mirrors?
- A capacitor is charged to potential difference of 12V it delivers 40% of its stored energy to lamp? what is final potential difference across capacitor? a. 4.3V b. 4.8V c. 7.2V d. 9.3V
- What simple machines belong to the lever family?
- What are unbalanced forces?
- How does an electric generator work?
- What is centre of buoyancy?
- Is it correct to say that constant speed = 0 acceleration = no resultant force?
- What is a circuit diagram?
- How can a converging lens produce a virtual image?
- How do you explain diffraction using Huygens principle?
- How is the law of conservation of energy similar to the law of conservation of mass?
- How do you find frequency in uniform circular motion?
- What is the force, in terms of Coulomb's constant, between two electrical charges of ##-1 C## and ##-2 C## that are ##4 m ## apart?
- Free body diagram help? Ramon pushes on a bed that has been pushed against wall, draw a diagram that identifies the forces and make a separate list of all forces that the bed applies to other objects
- An electric clothes dryer draws 18 A from a 240-V wall outlet. How much power, in watts, does it use?
- Are there any other formula of average acceleration beside change in velocity over change in time?
- How does inertia relate to the flight of an airplane?
- What is a lever?
- What happens to the angle of refraction as the angle of incidence increases?
- How does static electricity work in a balloon?
- The law of conservation of energy states that, "Energy cannot be created nor destroyed, but it can be transferred from one body to another". If that is so, where did energy come from at the FIRST place?
- Why does Newton's cradle stop?
- What is an example Kepler's Third Law practice problem?
- What are some examples of concave mirrors?
- How does Newton's third law apply to a rifle firing a bullet?
- The gauge pressure in both tires of a bicycle is 690 kPa. If the bicycle and the rider have a combined mass of 90.0 kg, what is the area of contact of each tyre with the ground?
- What is the difference between a ray of light and a beam of light?
- How does Newton's first law affect a balloon car?
- Why is the coefficient of restitution important?
- How does Newton's first law affect human motion?
- What is a carnot engine?
- An object that weighs one pound on the moon will weigh about 6.02 pounds on Earth. Suppose a moon rock weighs 11 pounds on the moon. How much will the same rock weigh on Earth?
- How does specific heat of water compare to other substances?
- How do you convert inches to feet?
- Does an electronic balance measure mass or weight?
- What is light? How fast does light travel?
- What is thermodynamics?
- What are some examples of pendulums?
- How does a single-slit diffraction pattern differ from a double-slit pattern?
- What kind of energy is the energy of motion?
- S.i unit and dimension of angular momentum?
- How do you increase the mechanical advantage of a pulley?
- How can you derive an equation for the area under a velocity-time graph?
- In uniform circular motion, do the velocity and acceleration remain constant, does the kinetic energy remain constant, do the speed and acceleration change, or does only the velocity change while the acceleration remains constant?
- How do you calculate coefficient of friction?
- What does conservation of energy mean?
- A tightrope walker, who has a mass of 60.0 kg moves to the center of the wire, which causes the wire to sag and make a 6.0° angle with the horizontal, what is the tension in the wire?
- How does the spring constant affect elastic potential energy?
- Why is static equilibrium important?
- How does a catapult work?
- Is force a scalar quantity?
- What is a parabola?
- If a car can go from 0 to 60 mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50 mi/hr?
- What is impulse?
- What is an acceleration vs time graph?
- How do you convert 95 mph to meters per second?
- What is the Law of Conservation of Charge?
- How can I convert minutes into hours?
- Please can someone answer the following: What does a fixed volume mean? Do solids have the smallest volume?
- How do you increase the mechanical advantage of a third-class lever?
- What is the force, in terms of Coulomb's constant, between two electrical charges of ##8 C## and ##-2 C## that are ##9 m ## apart?
- Why dont we put ammeter in parallel but voltmeter in parallel in a circuit?
- A square with an edge of exactly 1cm has an area of? a) ##10^-4 m^2## b) ##10^-7 m^2##
- Why are perfectly elastic collisions unlikely to occur?
- How is radiation different from conduction and convection?
- Water sprinkler used for grass lawns begins to rotate as soon as the water is supplied.Explain the principle on which it works.?
- How does the kinetic theory of matter define heat?
- To see the inner part of ear and other parts, E.N.T doctors use a concave mirror. What speciality of the mirror is used here?
- What ate the intrinsic and non intrinsic semi conductors?
- Why is a diffraction grating better than a prism?
- What is displacement?
- How does Newton's second law relate to the force of gravity?
- What unit of force is used in the universal gravitational constant?
- How can I represent in distance-time graph an object that is not moving?
- What is a magnet?
- What is the equation connecting gravitational force and specific gravity?
- Define displacement of a particle in linear motion. Does it depend upon the origin?
- How do you convert gallons to milliliters?
- How many yard in marine mile?
- How can I calculate the number of nucleons?
- If a missile is launched from a station 300 sea level with an initial velocity of 450 m/sec, what is the height of the missile after six seconds?
- How fast is a 13-g bullet that possesses 1.6 kg·m/s of momentum?
- A moon rock weighs 8.5 pounds on the moon. How much would this rock weigh on Earth?
- Does rotational inertia depend on the mass of an object?
- How can we convert minutes into seconds?
- How does mass affect angular velocity?
- How can I make a sodium atom model?
- How is Lenz's law related to the law of conservation of energy?
- A parallel-plate capacitor has a capacitance of 1.35 pF. If a 12.0 V battery is connected to this capacitor, how much electrical potential energy would it store?
- What is polarization?
- How does temperature affect the ideal gas law?
- A converging lens has focal length of 12 cm. calculate at what distance the object should should be placed from the lens so that it forms an image at 48 cm on the other side of the lens?
- How are harmonics related to fundamental frequency?
- What is the Zeroth law of thermodynamics?
- When In the absence of air resistance, why does the horizontal component of velocity for a projectile remain constant while the vertical component of free fall?
- Question related to the conservation of mechanical energy?
- How does friction affect the law of inertia?
- What electromagnetic waves are dangerous for humans?
- Why are concave mirrors are suitable for make up?
- What does latent heat of vaporization mean?
- F John ran a 5-kilometer marathon, how long was that in meters?
- What happens to a spring's force if you stretch it more?
- How does uniform linear motion differ from uniform circular motion?
- How does einstein's equation change the law of conservation of energy?
- Why is the voltage the same for resistors in parallel?
- What is a projectile?
- What is the Stefan Boltzmann constant?
- What are some examples of diffraction?
- When is applied force equal to friction. Can u please explain me this? If you also include examples, it will be best :)
- A stationary object explodes into two particles of masses m1 and m2 which move in opposite directions with velocities v1 and v2. The ratio of their kinetic energy is what???
- How do planets orbiting the sun and skaters conserve angular momentum?
- How can we calculate the work done in an elastic collision?
- How do you find moment of inertia of two point masses?
- What are longitudinal waves?
- Why is magnetic force a non contact force?
- Why does electric potential increase with distance?
- Why does a sharp knife cut better than a blunt one?
- What does the law of conservation of momentum mean?
- What is force?
- A copper wire of cross-sectional area 2.0 ##mm^2## carries a current of 10 A. How many electrons pass through a given cross-section of the wire in one second ?
- What is inertia?
- The top speed of a coyote is 43 miles per hour. What is the approximate speed in kilometers per minute?
- What is an example Kepler's Second Law practice problem?
- Can a scalar product of two vectors be zero even when neither of them is a zero vector?
- Define energy?
- Why do falling objects make a whistle sound?
- What does v=dx/dt means?
- What is impedance power?
- How does air resistance affect the motion of an object?
- Define the term specific heat capacity of a substance and give its SI units ?
- What simple machines are in a bicycle?
- A motorboat accelerates uniformly from a velocity of ##6.5## ##m####/####s## to the west to a velocity of ##1.5## ##m####/####s## to the west. If its acceleration was ##2.7## ##m####/####s^2## to the east, how far did it travel during the acceleration?
- What is emf?
- What is Stefan Boltzmann law used for?
- What is a divergent mirror?
- Which of the following is a correct statement of the Second Law of Thermodynamics?
- Why is the force = mass * acceleration rather than mass * velocity? Isn't the force exerted at a given moment rather than over a period of time, which is expressed through acceleration?
- What is the frequency in hertz of blue light having a wavelength of 425 nm?
- An object is traveling around a circle with a radius of 2 meters. If in 20 seconds the object travels 5 meters, what is its angular speed? What is its linear speed?
- What does the first law of reflection state?
- What is the relationship between Balanced Force and Net Force?
- What is the difference between constructive and destructive interference?
- How can i calculate orbital angular momentum of an electron?
- Find the length of an arc with a radius of 10.0 m swept across 100 degrees?
- What is a strait motion .. what is refrence point,origin,frame of refrence?
- Is pressure a vector, scalar or tensor quantity. Why?
- What does it mean if a lever is at a mechanical disadvantage?
- Why does the nucleus of an atom have a positive charge?
- How was Coulomb's law equation created?
- Why are standardized units of measurement important?
- What is the purpose of a capacitor?
- How can physics help engineers?
- A block with initial velocity of 3 m/s slides 9 m across a rough horizontal surface before coming to rest. What is the coefficient of kinetic friction?
- The index of refraction for water is 1.33 and for glass it is 1.52. What happens to the speed of light when light travels from water into glass?
- How does nuclear decay affect the atomic number and mass number?
- Jason can travel 24##3/4## miles in ##1/2## an hour. What is his average speed in miles per hour?
- The force exerted by the floor of an elevator on the foot of a person standing there ,is more than his weight if the elevator is: a-going up and speeding down b-going down and slowing down c-going up and speeding up d-both b and c?
- What does it mean to say the Kepler's laws are empirical in nature?
- What is the acceleration due to gravity on the surface of a planet that has twice the mass of the Earth and half its radius?
- What is magnetism?
- The acceleration due to gravity on the moon is about one-sixth its value on earth. If a baseball reaches a height of 66 m when thrown upward by someone on the earth, what height would it reach when thrown in the same way on the surface of the moon?
- If linear momentum is increased by 50% then how much will the kinetic energy increase by, and why?
- What is the difference between a Joule (J) and an electron volt (eV)?
- How do i convert 1.2kg /m3 into g /cm3?
- What is diffraction of light?
- How does acceleration affect tension?
- What was wrong with Rutherford's model of the atom?
- Why is the Newton's second law called the equation law?
- How does current change for resistors in series?
- Sheila can ride her bicycle 6000 meters in 15 minutes. How far can she ride her bicycle in 2 minutes?
- Suppose you connect a battery to a small light bulb with a single wire. What will happen?
- If an object has a mass of 50 kg, what is its weight?
- Name two advantages of relative density over density in measurement?
- What does velocity mean in motions graphs?
- How do you express 12 km/L in miles/gal?
- A satellite is placed in equatorial orbit above Mars, which has a radius of 3397km and a mass M=6.4x10^23 kg. The mission of the satellite is to observe the Martian climate from an altitude of 488km. What is the orbital period of the satellite?
- How do sound waves transfer energy?
- What is the difference between gravitational force and weight?
- How is the acceleration of a moving object determined?
- What is an advantage of using an electromagnet rather than a regular magnet?
- Why do falling objects reach a terminal velocity?
- What is the mathematical expression of Newton's law of gravitation?
- The resistence of a conductor 5 ohm-what does it means?
- What are the criteria for a total internal reflection to occur?
- How is the conservation of momentum related to Newton's third law?
- How do you draw a converging lens ray diagram?
- What is an example of an energy transformation from electrical to sound energy?
- What is the difference between speed and velocity and acceleration?
- An astronaut has a mass of 100 kg and has a weight of 370 N on Mars. What is the gravitational strength on Mars?
- What is the SI unit of electric field?
- What are some examples of net forces?
- Why is diffraction grating more accurate than double slits to measure the wavelength of light?
- Is a parallel circuit better than a series circuit?
- How does length of a string affect its frequency? Thanks
- A 4 g air-rifle pellets is fired into a target block attached to a glider. The block and glider total mass is 0.5 kg. The target slides along the track a distance 1.455 m. The track is inclined 10 degree. Determine pellet velocity from air rifle?
- What type of wave is a sound wave?
- Is an antinode caused by constructive or destructive interference?
- A sphere with a radius of 1.7cm has a surface area of? a) ##3.6*10^-3 m^2## b) 36 m c) 3.66mm
- How do beats help determine whether two sound waves are of the same frequency?
- How do kepler's laws of planetary motion relate to newton's law of universal gravitation?
- How will you prove the formula ##cos(A-B)=cosAcosB+sinAsinB## using formula of vector product of two vectors?
- What is the difference between an internal and an external circuit?
- A certain length of wire when vibrated with another sonometer wire produced 2 beats per second for both the lengths ##122 cm## and ##120 cm## of this second sonometer wire and it's tension is same in both the occasions. What is the frequency of first wire?
- Air is cooled from room temperature 25 C to 100 K what is the temperature change in K?
- What is difference between (1) Anion & Anode (2) Cation & Cathode?
- What is the difference between Thrust and Force?
- How to find the moment of inertia of a solid cylinder about transverse (perpendicular) axis passing through its center?
- How can Newton's first law be derived from Newton's second law?
- What is the principle of superposition of waves?
- How does heat energy affect the movement of water molecules?
- What is the relationship between the second law of thermodynamics and entropy?
- Why is acceleration measured in meters / seconds squared?
- How does kinetic molecular theory explain the Charles' law?
- What is 20 degrees celsius in fahrenheit?
- Because gravity on is about one-third of that on Earth, could you infer that Mars has more mass than Earth?
- How does Newton's third law work when you walk?
- Why is latent heat called hidden energy?
- A 1000-watt microwave oven takes 60 seconds to heat a bowl of soup. How many joules of energy does it use?
- What two simple machines make a screw?
- What is a STANDING WAVE? How is an echo formed?
- How do nuclear reactions change the identity of an atom?
- If the index of refraction of water is 1.33, what is the speed of light in water?
- How to write an equation relating distance to force? With a table and graph?
- A beaker containing water is placed on a spring scale and reading is W. Now a stone of weight D is hung by means of massless string and lowered in water without touching the bottom of beaker. What is the new reading on spring?
- In raising a 5000N piano with a pulley system, the movers note that for every 2m of rope pulled down, the piano rises 0.2m. What is the effort force required to lift the piano?
- How many 325 mg ibuprofen tablets can be produced from 2.50 kg of ibuprofen?
- How do you calculate kinetic energy in simple harmonic motion-pendulums?
- How does the coulomb law differ from newton's law of universal gravitation?
- What are some examples of conduction?
- A book weighs ##6.0## ##N##. If the acceleration of gravity is ##9.8## ##m####/####s^2##, what is the mass of the book in kilograms?
- The resultant of two forces one double the other in magnitude is perpendicular to the smaller of the two forces. the angle b/w the two forces is? a. 120 b/ 60 c/ 90
- The Eiffel Tower in Paris stands 300.0 m tall on a day of average temperature, 22.0°C. How much taller is the steel tower on a hot summer day (T = 40°C) in centimeters? (αsteel = 11 x 10-6 °C-1)
- An arrow is shot at a 30 degree angle with a velocity of 39m/s. How high will it go? What horizontal distance will it travel?
- What does acceleration mean in motions graphs?
- What are conservative and non-conservative forces?
- What does a horizontal line mean in a speed-time graph?
- How do I know when the Fnet in y direction is 0, any hint i have a test tomorrow?
- The speed of sound in air is about 340 m/s. What is the wavelength of a sound wave with a frequency of 220 Hz?
- What is pseudo force?
- How much does a 78.0 kg student weigh on earth (g = 9.81##m/s^2##) and on the moon (g = 1.60##m/s^2##)?
- How does frictional force of the pulley affect the acceleration of the system?
- What are standing waves?
- How does Newton's second law relate to inertia?
- What are some examples of speed of sound?
- How do you calculate the moment of inertia of a beam?
- What is an example of kinetic energy in nature?
- Does uniform circular motion have constant acceleration?
- What is the difference between electric potential and electrostatic potential energy?
- Is a mirror's surface transparent, translucent, or opaque? How do you know?
- A disk revolves in a horizontal plane at a steady speed of 3rev/s. A coin will remain on the disk if it is kept a distance of 2cm from the axis of rotation. What is the coefficient of friction between the coin and the disk?
- How does the law of conservation of matter and energy relate to the cycles in nature?
- A dart is thrown horizontally with an initial speed of 10m/s toward point P,the bull's eye on a dart board.It hits at point Q on the rim,vertically below P,0.19s later. What is the distance PQ? How far away from the dart board is the dart released?
- The radius of curvature of a spherical mirror is 30 cm. What is the focal length of the mirror?
- Why is the index of refraction always greater than or equal to 1?
- How human body temperature is maintained at normal value (37 degrees centigrade) when the atmospheric temperature rises as high as 45 degrees centigrade ?
- How do you calculate the magnitude of displacement?
- What is a strong nuclear force and what is a weak nuclear force?
- In the figure, one end of a uniform beam of weight 420 N is hinged to a wall; the other end is supported by a wire that makes angles θ = 29° with both wall and beam. ?
- The diameter of a steel rod is given 56 +- 0.2 mm. What does it mean?
- How do you convert 8 mi/h to ft/min?
- What is the difference between reflection and refraction?
- When a ball is thrown upwards, what is the relationship between kinetic and potential energy at the initial position and maximum height reached by the ball?
- What is mechanical advantage and mechanical efficiency??
- Using Huygen's principle, explain why diffraction of light can be regarded as a special case of interference ?
- How do vectors subtract graphically?
- How can electromagnetic waves be used to measure distance?
- Why is projectile motion parabolic?
- Why is the mass for elements on the periodic table written as a decimal?
- Write the applications of high specific heat capacity of water in daily life?
- The latent heat of vaporization of water is 2260 J/g. How many grams of water at 100°C can be converted to steam by 226,000 J of energy?
- Why only gold leaves are used in electroscope?
- At time t = 0 s, a wheel has an angular displacement of zero radians and an angular velocity of +28 rad/s. The wheel has a constant acceleration of -0.50 rad/##s^2##. In this situation, at what time will the wheel come to a halt?
- Why the Newton's second law of motion important?
- A Proton and an Alpha particle are accelerated by same potential difference.If they enter in a region of uniform electric field in a direction perpendicular to it, then deflection of which is more?
- Why do scientists use the joule as the unit of measurement of energy instead of the calorie?
- Why must the universe be an isolated system to obey the Law of Conservation of Mass?
- What does LASER stand for?
- How do you calculate the fundamental frequency of a pipe?
- What is the definition of elastic potential energy?
- What is the comercial unit of enrgy and si unit energy establish the relationship between comercial unit and si unit of energy ?
- What is a transformer?
- What is projectile motion?
- What is the source of mechanical energy in an electric generator?
- In order to open the clam it catches, a seagull will drop the clam repeatedly onto a hard surface from high in the air until the shell cracks. If a seagull flies to a height of 27 m, how long will the clam take to fall?
- 1 m is equivalent to 3.281ft. A cube with an edge of 1.5ft has volume of?
- Why was Edison electric power plant important?
- How is energy conserved in an endothermic reaction?
- What is the SI for a unit of power?
- Why is a ladder an inclined plane?
- A block of wood floats in a liquid of density 0.8g/cm sq. with one fourth of its volume submerged. In oil the block floats with 60% of its volume submerged. Find the density of (a) wood? (b) oil?
- How do you convert meters to centimeters or millimeters?
- How is friction force related to normal force?
- How does gas exert pressure on its container?
- How are parallel circuits used in homes?
- How can I calculate the net force of an object?
- How do you calculate the force of sliding friction?
- Can moment of inertia be negative?
- How do convex and concave lenses affect parallel light rays?
- Poiseuille's law is about factors that control the flow rate of fluid through pipe. Explain all the factors involved?
- How fast is 60 miles per hour in kilometers per hour?
- Why is knowledge on vector important in physics?
- How do you draw a diverging lens ray diagram?
- In a moving coil galvanometer, why concave head pole pieces are used instead of flat head pole pieces?
- How do you convert gallons into cubic meters?
- What is Thermal Equilibrium?
- Why do electric lines of force never cross?
- A marathon is is about 26 miles. How many kilometers are equal to 26 miles?
- A punter in a football game kicks a ball from the goal 60° from the horizontal at 25 m/s. What is the hang time afthe punt, and how far down field does the ball land?
- The resistance of a conductor is 5 ohm at 50*c and 6 ohm at 100*c.Its resistance at 0*is??THANK YOU!!
- What does a velocity vs. time graph show?
- What is the relationship between linear speed and angular speed?
- What does wavelength, frequency, and inverse relationship mean?
- How do you convert feet into meters and centimeters?
- How does Newton's second law include the first law?
- How can i calculate the radius of gyration K of a compound pendulum?
- How to convert grams into kilograms?
- What is the mass in kg of a person who weighs 185 pounds?
- Explain relative velocity of man with respect to rain?
- What is latent heat of fusion?
- What is the equation for Snell's law?
- How do you calculate the mechanical energy of an object?
- What are the SI units for gravity, charge, potential difference , voltage, and electric field?
- What is the physical significance of divergence theorem?
- How to prove the thin lens equation, geometrically?
- How do a wheel and axle work?
- Can you describe the difference between the coefficient static friction and kinetic friction by using examples?
- How can i calculate voltage drop in a parallel circuit?
- Acceleration due to gravity on Mars is about one—third that on Earth. Suppose you throw a ball upward with the same velocity on Mars as on Earth. How would the balls maximum height compare to that on Earth?
- What is the Doppler shift, and why is it important to astronomers?
- Explain what happens waves undergo constructive interference
- The speed of sound in water is 1430 m/s. What is the wavelength of a sound with a frequency of 286 Hz traveling through the water?
- What is the force on a 1000 kg elevator that is falling freely at the acceleration of gravity?
- How is Coulomb's law similar to Newton's?
- How does polarization show that light is a transverse wave?
- If a series–parallel circuit has all 30-ohm resistors, what is the total resistance when r1 is in series with a parallel circuit consisting of r2 and r3?
- What is the force, in terms of Coulomb's constant, between two electrical charges of ##44 C## and ##39 C## that are ##12 m ## apart?
- How are electric forces and charge related?
- How does specific heat of metal compare to that of water?
- Why potentiometer be preferred over a voltmeter for measurement of emf of a cell.?
- A car possesses 20,000 units of momentum, whats the cars momentum if its velocity is doubled? tripled?
- What are all the Physics Formulas (Newtonian Mechanics)?
- An iron wrench (density = 7800 kg/m3) feels 3N lighter in water. (a) What is the mass of the wrench? (b) How would your answer change if it took a denser fluid to make the wrench feel 3N lighter?
- How to calculate mechanical advantage of a third-class lever?
- What two things does gravitational potential energy depend on?
- A desk measures 42 inches long. How many meters is that?
- What is the long definition of rotational motion? What are the other types of motion?
- What is the right hand rule?
- What are quarks made of?
- How does the radius affect the moment of inertia?
- What is the difference between linear velocity and angular velocity?
- What is momentum? (Please don't limit it by saying that it is ##m*v##. At least tell what this formula means.)
- What is an inelastic collision and its formula? Thanks in advance!
- Use Coulomb\'s Law to calculate the energy of a copper ion and an oxide ion at their equilibrium ion-pair separation distance?
- What is 25 mi/hr converted to m/min?
- A red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 216 m. If the red car has a constant velocity of 27.0 km/h ?
- How do we represent the magnitude of a vector in physics?
- Calculate the equivalent resistance of the combination of three resistors of 2 ohm ,3ohm,and 6ohm joined in parallel?
- How does the law of conservation of energy apply to chemical changes?
- How do you calculate the mechanical advantage of a second-class lever?
- What are vectors used for?
- Neon gas has a volume of 2,000ml with an atm of 1.8, however if the pressure decreases to 1.3atm, what is now the volume of the neon gas?
- Is capacitance inversely proportional to voltage?
- What is instantaneous acceleration?
- What does force mean?
- What is the average power supplied by a 60.0 kg person running up a flight of stairs a vertical distance of 4.0 m in 4.2 s?
- What is Pressure?
- What is the unit for the index of refraction?
- By what factor would your weight change if Earth's diameter were tripled and its mass were tripled?
- How do you convert a length of 17.0 m to inches?
- How does Newton's third law relate to an egg drop?
- Can anyone please tell me the definition of Time, Speed, and Velocity please?
- If Jacob ran 24 kilometers, how many miles did Jacob run?
- The latent heat of fusion of water is 334 J/g. How many grams of ice at 0°C will melt by the addition of 3.34 kJ of heat energy?
- How much energy will it take to melt 100 grams of ice at 0◦C?
- A 12.0 g rubber bullet travels at a velocity of 150 m/s, hits a stationary 8.5 kg concrete block resting on a frictionless surface, and ricochets in the opposite direction with a velocity of -100. m/s. How fast will the concrete block be moving?
- Does a steeper graph mean a greater acceleration?
- Why does wavelength of a light change when it passes from one medium to another?
- Light is travelling in quartz, which has an index of refraction of 1.458. How fast does light travel in quartz?
- What is the percent difference between the acceleration due to gravity at sea level and at the uppermost peak of Mount Everest?
- What is 75 miles per hour in kilometers per second?
- Explain why dogs pant during hot summer days using the concept of evaporation?
- A segment of steel railroad track has a length of 30,000 m when the temperature is 0,0 Celsius. What is the length when the temperature is 40 Celsius?
- Which are those two vectors whose resultant vector is zero?
- The Eiffel Tower is built of wrought iron approximately 300 m tall. Estimate how much its height changes between July (temperature of 31°C) and January (temperature of-4°C). Ignore the angles of the iron beams, and treat the tower as a vertical beam.
- Why is plane polarised light not the same as monochromatic light?
- In unit-vector notation, what is the sum of A = (5.4m)i + (1.4m)j and B = (-14.0m)i +(6.4m)j.What are (b) the magnitude and (c) the direction of A+B (relative to i) ?
- What color of light has the most energy?
- What are free body diagrams and what are they used for?
- How does electromagnetic radiation relate to flame tests?
- How many seconds are there in a year?
- Rupert drove home at an average rate of 58 miles per hour. What is his rate in feet per second?
- How does thermal expansion affect a thermometer?
- Is uniform circular motion in equilibrium?
- How does wave refraction occur at a shoreline?
- How does mass affect a pendulum's period?
- How would you add two vectors that aren't perpendicular or parallel?
- What kind of simple machine is a pliers?
- How do you calculate specific heat capacity of an unknown metal?
- What is the magnitude and direction of the gravitational force that acts on a woman who weighs 500 N at the surface of Earth?
- How are electromagnetic waves different from sound waves?
- How does heat differ from thermal energy?
- How is buoyant force related to floating and sinking?
- How can I calculate the densities of a hydrogen nucleus and a hydrogen atom?
- If a 60 kg person on a 15 kg sled is pushed with a force of 300 N, what will be a person's acceleration?
- How does energy flow through an ecosystem?
- What does a transformer do to AC voltage?
- How does gravity causes erosion?
- How do you convert gallons to liters?
- What does advent mean?
- What properties of light are used in a periscope?
- How is buoyant force related to weight?
- Why can you safely handle a 1.5-V battery without being electrocuted?
- Derive the formula for centripetal acceleration?
- What is free fall and how does it relate to gravity?
- Why gravitational acceleration is zero at the centre of the Earth maximum at the poles and minimum at the equator?
- A right circular cylinder with a radius of 2.3cm and a height of 1.4cm has a total surface area of? a) ##5.3*10^-3## b) ##7.4*10^-3##
- Why is horizontal velocity constant in projectile motion?
- What is torque?
- What is radioactivity?
- A clock with an iron pendulum keeps correct time at 20C.How much will it lose or gain per day if temperature changes to 40C?Coefficient of cubical expansion of iron =36x10-6C-1
- Among red and violet color which has higher speed?
- How is impulse related to momentum?
- What is rotational motion?
- What is buoyancy?
- A cheetah can run at a speed of 75 miles per hour and can sustain that speed for about 1,500 feet. Approximately how fast is the cheetah running in feet per second?
- How do you calculate the mechanical advantage of a compound pulley?
- What is the main difference between an inelastic and a perfectly inelastic collision?
- Explain vector and rectangular components of a vector?
- What are some examples of relative motion?
- What is an example of potential energy in nature?
- How does the first law of thermodynamics apply to photosynthesis?
- What is a period in physical science?
- Why does the coefficient of friction has no units?
- What is the Bernoulli's principle?
- Why is acceleration inversely proportional to mass?
- Is capacitance inversely proportional to distance?
- What is a wedge?
- A train comes to a stop in 3 minutes. if the train had a uniform acceleration of -3.5 m/s/s what was initial velocity of the the train?
- What medium does sound travel through best?
- A steel wire in a piano has a length of 0.7 m and a mass of 0.0043 kg. To what tension must this wire be stretched so that the fundamental vibration with frequency of 261.6 Hz?
- What is electron affinity?
- How many miles per hour is 25.4 feet per second?
- Does charging by induction or conduction occur during a thunderstorm?
- What are some examples of an elastic collision?
- How can an object have a negative acceleration while speeding up and a positive acceleration while slowing down? Please explain using easy terms, I do not understand the way my textbook explains it.
- What is the meaning of constant of proportionality in physics?
- What is the difference between simple and compound machines?
- How can potential energy be increased and decreased?
- How do you convert 300kPa into atm and mm Hg?
- What is the force, in terms of Coulomb's constant, between two electrical charges of ##-45 C## and ##60 C## that are ##15 m ## apart?
- How does Newton's first law affect roller coasters?
- How does blood pressure differ in arteries capillaries and veins?
- Three hundred joules of energy are used to push an object with a force of 75 newtons. What is the maximum distance the object can move?
- What are photons?
- How does heat change the density of air?
- At what distance of separation must two 1.00-microCoulomb charges be positioned in order for the repulsive force between them to be equivalent to the weight (on Earth) of a 1.00-kg mass?
- How do Wien's law and the Stefan-Boltzmann law describe blackbody radiation?
- The earth's radius is 6400 km. A 25-kg mass is taken 201 km above the earth's surface. What is the object's mass at this height?
- How to convert inches to feet to yards. Three friends each have some ribbon. Carol has 42 inches of ribbon, Tino has 2.5 feet of ribbon, and Baxter has 1.5 yards of ribbon. What is total length each friend has in inches, feet and yards?
- Explain why weight and mass are used as synonyms on earth, but are different for an astronaut traveling to the moon. Explain why it would be used as a synonym by someone who grew up on the moon their whole life?
- What is an inelastic collision?
- The height ##h## (in feet) of a volleyball ##t## seconds after it is hit can be modeled by ##h = -16t^2+48t+4##. How long is the volleyball in the air?
- Why is centripetal acceleration towards the center?
- An RC circuit with a 1-Ω resistor and a 0.000001-F capacitor is driven by a voltage EAtB
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- A rocket is moving away from the solar system at a speed of 6.0x103 m/s. It fires its rocket engine, which ejects exhaust with a relative velocity of 3.0x103 m/s. The mass of the rocket at this time i
- A body moving along the x-axis is subject to a force repelling it from the origin, given by F = kx. (a) Find the potential energy function U(x) for the motion and write down the conservation of energy
- Little Joey jumps into a pool on a cool fall morning. How can we describe the direction of energy transfer and temperature change between Joey and the water? A) Energy is transferred from Joey to the
- The power in an electrical circuit is given by the equation P=I^2R where I is the current flowing through the circuit and R is the resistance of the curcuit.1.what is the power in a circuit that has a
- A baseball is dropped off the side of a cliff. It free-falls to the ground in 8 seconds. During the third second, the ball is traveling about ___ m/s.
- Are you from Connections Academy or any other online school? Then join our discord, we help each other out with homework and just chill. discord.gg/qy84cGn WE also have our own tutors that can help yo
- Which system allows for the movement of blood throughout the body? A. endocrine B. reproductive C. respiratory D. circulatory
- Neo and Morpheus's masses have gained a velocity (not equal to zero) which means their momentum is now _____ .
- A 28.0-kg block is resting on a flat horizontal table. on top of this block is resting a 18.0-kg block, to which a horizontal spring is attached, as the drawing illustrates. the spring constant of the
- A long cylinder of radius a is coaxial with the z axis. the interior of the cylinder has a non- uniform charge density given by
- A 3.00-m-long, 190-n, uniform rod at the zoo is held in a horizontal position by two ropes at its ends in
- A car with a mass of 1,200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second. The centripetal force on the car is 6,000 newtons. What is the radius of the curve
- A particle of charge q = e moves in a circle of radius = 0.70 m with speed v = 2.750×107 m/s. treating the circular path as a current loop with constant current equal to its average current, find the
- A race car, traveling at a constant speed of 50 m/s, drives around a circular track of radius 250 m. what angular acceleration does it experience?
- At a particular temperature, the equilibrium concentration of nh3 is found to be 0.231 m. given this information, determine the numerical value of k for this reaction, at this temperature.
- Consider the father pushing a playground merry-go-round in cnx_hsphysics_06_03_merrygo. he exerts a force of 250n250n at the edge of the merry-go-round, which has a 1.50m1.50m radius. how much t
- Determine the towing force f required to move the car if the back brakes are locked, and the front wheels are free to roll.
- Estimate the theoretical fracture strength (in mpa) of a brittle material if it is known that fracture occurs by the propagation of an elliptically-shaped surface crack of length 0.25 mm that has a ti
- Find the magnitude of the average frictional torque acting on the flywheel during the elapsed time of 5.00 minutes.
- Hat is the magnetic field in the middle of the capacitor plates at a distance d from the center, as a function of time t?
- If his height is measured to be 1.90 m by his doctor inside the ship, what height would a person watching this from earth measure for his height?
- If the mass of the child and sled is 35 kg , what is the magnitude of the average force you need to apply to stop the sled? use the concepts of impulse and momentum.
- In a certain region the average horizontal component of earth's magnetic field is 16 μt, and the average inclination or "dip" is 78°. what is the corresponding magnitude of earth's magnetic field in
- In the olympiad of 708 b.c., some athletes competing in the standing long jump used handheld weights called halteres to lengthen their jumps (fig. 9-56). the weights were swung up in front just before
- Onsider an air solar collector that is 1 m wide and 2 m long and has a constant spacing of 3 cm between the glass cover and the collector plate. air flows at an average temperature of 45°c at a rate
- Problem 5. a barbell consists of two small balls, each with mass m at the ends of a very low mass rod of length d. it is mounted on the end of a low-mass rigid rod of length b. the apparatus is set in
- Question part points submissions used hrw6 36-9p two waves of light in air, of wavelength 393. nm, are initially in phase. they then travel through plastic layers as shown in fig. 36-28, with l1 = 4.1
- The skier starts from rest at a and travels down the ramp. if friction and air resistance can be neglected, determine his speed vb when he reaches b. also, compute the distance s to where he strikes t
- The velocity in a certain flow field is given by the equation v=x2i^+x2z2j^+y3zk^ determine the expressions for the rectangular (a) x - component, (b) y - component and (c) z - component of accelerati
- Two cars collide at an icy intersection and stick together afterward. the first car has a mass of 1200 kg and is approaching at 8.00 m/s due south. the second car has a mass of 850 kg and is approachi
- When the fan is turned on, it takes t = 3.4 s and a total of 13 revolutions to accelerate up to its full speed?
- You work in a materials testing lab and your boss tells you to increase the temperature of a sample by 42.6 ∘c . the only thermometer you can find at your workbench reads in degrees fahrenheit.
- A body moving along the x-axis is subject to a force repelling it from the origin, given by F = kx. (a) Find the potential energy function U(x) for the motion and write down the conservation of energ
- Newton's second law state that a force on a drag racer is equal to the mass of the car times it's acceleration. one of the most important factors determining the cars acceleration is the tires on the
- a feather has a mass of 0.5 g and the gravitational potential energy when the feather falls through a height og 1.60 m to hit the ground is 0.008 J, calculate the total amount of heat energy transferr
- When Esme is catching a softball in outfiled, her constant speed is 12 kilometers/seconds. What is her instantaneous speed when she has run halfway toward the ball?
- A suction cup works by creating a vacuum between the rubber cup and surface its stuck to. if the total area of the rubber cups is 0.01 meters, how much weight can the suction cup support when stuck to
- What would be the weight of a 59.1-kg astronaut on a planet with the same density as Earth and having twice Earth's radius? A) 580 N B) 290 N C) 1160 N D) 2320 N E) 1200 N
- Close, emotional bonds of affection that develop between infants and their caregivers defines a. separation anxiety. b. developmental norms. c. bonding. d. attachment.
- Close, emotional bonds of affection that develop between infants and their caregivers defines a. separation anxiety. b. developmental norms. c. bonding. d. attachment.
- A sphere mass m1 and a block of mass m2 are connected by a light cord that passes over a pulley. The radius of the pulley is R, and the mass of the thin rim is M.. The block slides on a frictionless,
- An American Red Cross plane needs to drop emergency supplies to victims of a hurricane in a remote part of the world. The plane is traveling horizontally at 100.0 m/s at a height of 50.0 m above the g
- A cubic box with an edge of exactly 1 cm has a volume of: A. 10−9 m3 B. 10−6 m3 C. 10−3 m3 D. 103 m3 E. 106 m3
- A firefighter mounts the nozzle of his fire hose a distance 32.1 m away from the edge of a burning building so that it sprays from ground level at a 45° angle above the horizontal. After quenching a
- A baseball is thrown towards a player with intial velocity 20m/s and 45degree with horizontal .At the moment the player is 50m from the thrower.what must be the speed to catch the ball jut before it s
- After learning about CPT code how have you been able to personalize some of the codes to better understand coding
- In a 2005 ceremony inducting Dan Marino to the Football Hall of Fame, who was the recipient of Dan's “one last pass” thrown from the podium?
- The graph shows world energy source use - describe the trend in the graph and suggest 2 reasons for changes over time.
- A student is using an apparatus to perform an investigation. The two calorimeters contain equal amounts of water, and the metal bar is touching the water inside each calorimeter. At the beginning of t
- A cylindrical container with a cross-sectional area of 66.2 cm2 holds a fluid of density 796 kg/m3 . At the bottom of the container the pressure is 118 kPa . Assume Pat = 101 kPa
- How can a person maintain a healthy body image? What forces work to make people feel bad about their body images?
- A guitar player shortens the length of a guitar's vibrating string by pressing the string straight down onto a fret.
- Environmental science is the study of a. organismal relationships b. human impact on the Earth c. ecosystems d. all of the above
- What is true of a molecule? Each molecule of a compound has different properties. All molecules of a compound have the same properties. All molecules of a compound have one type of atom. Each atom of
- The field of meteorology is based on studying which of the following? a.)stars and plants b.) weather and climate c.)rocks and minerals d.)earthquakes and volcanoes
- Which of the following fields includes the study of hurricanes? a.)hydrology b.)geology c.)meteorology d.) astrology
- If an object is placed at a distance greater than twice the focal length of a convex lens, what type of an image will be produced? real, upright, and enlarged virtual, inverted, and small real, inver
- Which of the following statements is true about prairie dogs? A. Prairie dogs have a specific call to indicate the intelligence of the predator. B. Prairie dogs vary their call depending on the charac
- A truck, initially traveling at a speed of 22 m/s, increases speed at a constant rate of 2.4 m/s2 for 3.2 seconds. What is the total distance traveled by the truck during this 3.2-second time interval
- Rock can be weathered and eroded in the rock cycle. What might happen with the resulting rock particles? A. New rock is formed from other rock by great heat and pressure. B. Igneous rock is formed. C.
- A sample of an ideal gas at 1.00 atm and a volume of 1.94 l was placed in a weighted balloon and dropped into the ocean. as the sample descended, the water pressure compressed the balloon and reduced
- The acceleration of a rocket launched from ground level during the first 10 seconds is given by the formula a(t)=30t−3t2a(t)=30t−3t2 m/sec22. assume the initial velocity is 120120 m/sec. (a) find
- The same double-slit experiment is then immersed in water (with an index of refraction of 1.33) and repeated. when in the water, what happens to the interference fringes?
- Two identical traveling waves, moving in the same direction, are out of phase by π/4 rad. what is the amplitude of the resultant wave in terms of the common amplitude ym of the two combining waves?
- What is the change in kinetic energy of the crate? 1. 641.269 2. 455.961 3. 322.94 4. 357.105 5. 232.84 6. 655.307 7. 755.704 8. 504.575 9. 364.755 10. 715.41 answer in units of j?
- You are trying to raise a bicycle wheel of mass m and radius r up over a curb of height h. to do this, you apply a horizontal force f s (fig. p11.72). what is the smallest magnitude of the force f s t
- The use of air bags in cars reduces the force of impact by a factor of 110.(The resulting force is only as great.) What can be said about how the airbag changed the duration of the collision? a.It sta
- Why do scientist think Earth's core contains iron? A) The crust does not contain much iron. B) Iron is lighter than oxygen C) Iron does not conduct electricity.
- An open pipe of 0.76 m long vibrates in the first overtone with a frequency of What is the fundamental frequency of the pipe?
- A big league hitter attacks a fastball the ball has a mass of 0.16 kg it is pitched at 38 m/s after the player hits the ball it is now traveling 44 m/s in the opposite direction the impact lasted 0.00
- Assume that the energy (electric potential energy) is zero for an electron that is infinitely far from a proton, would the energy be positive or negative for an electron that is bond inside an atom? A
- Which of these statements is correct for light waves? a.It does not travel through water. b.It does not travel through vacuum. c.It travels fastest through vacuum. d.It travels fastest through water.
- Every 18 months, during the Spring tide, the Moon is at its closest distance to the Earth, called its _____. This produces gravitational forces that are very strong and cause extremely high tides.
- When a driver presses the brake pedal, his car can stop with an acceleration of -5.4 m/s^2. How far will the car travel while coming to a complete stop if its intial speed was 25 m/s?
- A boat sails along the shore. To an observer, the boat appears to move at a speed of 11 m/s, and a man on the boat walking forward appears to have a speed of 12.4 m/s. How long does it take the man to
- 1.) A perfectly conducting plane is located in free space at x = 4, and a uniform infinite line charge of 40 nC/m lies along the line x = 6, y = 3. Let V = 0 at the conducting plane. At P(7,−1, 5) f
- PLEASE HELP !!!!!!!!!!!! One of the moving parts of an engine contains 1.60 kg of aluminum and 0.300 kg of iron. The part can be safely operated at a maximum temperature of 210°C. How much heat is re
- Which statement BEST explains why the specific heat of water is higher than the specific heat of most other substances? A) Due to its polarity and hydrogen bonding water can absorb heat without a sig
- Which of the following descriptions correctly describes a way of electrical transfer? 1) Electrons are transferred between a conductor and insulator by means of contact. 2) Protons are transferred bet
- Describe motion and frame of reference Define, describe and solve for speed, velocity and acceleration Define force and friction Identify relationship between force, acceleration and mass Describe and
- Jenny and Betty are having a great time at Busch Gardens riding the Ubanga Banga bumper cars. Jenny, who is traveling southward in her bumper car, aims her car toward Betty, who is traveling northward
- A silversmith is making some jewelry. Using a torch, he adds 40 kJ of thermal energy to 140 g of silver initially at 68 degrees F. How much of the silver melts?
- A hiker uses a large, 10-kg hammer to drive a 0.75-kg stake into the ground. In doing so, he allows the hammer to fall from a height of 1.25 m before striking the stake. If the strike drives the stake
- Two charged particles exert an electrostatic force of 10 N on each other. What will the magnitude of the electrostatic force be if the distance between the two charges is reduced to one-half of the or
- Part b - punnett square punnett squares are convenient ways to represent the types and frequencies of gametes and progeny in experimental crosses. this punnett square shows the results of a yy x yy cr
- The impulse given to a ball with mass of 2.0 kg is 16 N.s. If the ball were already moving at 3.0 m/s, what would the final velocity be? (Remember that v = Vfinal - Vinitial )
- car is traveling at 20 meters/second and is brought to rest by applying brakes over a period of 4 seconds. What is its average acceleration over this time interval? It has no acceleration. Its acceler
- Sixty-three joules of heat are added to a closed system. The initial internal energy of the system is 58 J, and the final internal energy is 93 J. How much work is being done by the system?
- Which of the following is only a muscular strength activity you can do at school Walking Dancing Martial arts Push ups
- Which statement comparing the box plots is true? Both the median and the range changed. Both the range and the lower quartile changed. Both the median and the interquartile range changed. Both the int
- Suppose a star the size of our Sun, but of mass 9.0 times as great, were rotating at a speed of 1.0 revolution every 17 days. If it were to undergo gravitational collapse to a neutron star of radius 1
- In the early 19th century Christian Doppler, an Austrian physicist, proposed a theory regarding the properties of a moving source of sound. This is now known as Doppler’s law or the Doppler effect.
- Is the state of the air in an isolated room completely specified by the temperature and the pressure? Explain
- Engineering question please helpI am revising for my exam and I am unable to answer one question, it is as follows:Is it possible to compress an ideal gas in a cylinder with piston isothermally in an
- Engineering question please helpI am revising for my exam and I am unable to answer one question, it is as follows:Is it possible to compress an ideal gas in a cylinder with piston isothermally in an
- You want to pull a 10 kg block up a frictionless ramp with an acceleration of 2.5 m/s2. What force do you need to apply along on the block along the direction of the ramp's surface if the ramp is angl
- Materials that have been layered within the jar. Even if these materials were shaken, they would separate back out into layers after sitting for a while. What property of matter is being demonstrated?
- A test car travels in a straight line the graph in the figure shows the cars position x as function of time. find its instantaneous velocity at point e
- City B is north of City A, and the 400 mile trip by car takes 8 hours. The cities are 320 miles apart in a straight line. What is the velocity of a trip from City A to City B?
- How is an image produced by a plane mirror different than an image produced by a convex mirror? It is smaller than the object. It is the same size as the object. It is inverted. It is upright.
- The pressure on the windows was generated by air pushing on the windows, which is the average _____ the air molecules are applying over the surface area of the glass.
- What is the magnitude and direction of the gravitational Field Midway between the earth and moon?ignore effects of the sun
- A mass of 1.5 kg is attached to a spring and placed on a horizontal surface. The spring has a spring constant of 120 N/m, and the spring is compressed 0.25 m past its natural length. If the mass is re
- A car of mass m traveling at speed v crashes into the rear of a truck of mass 2m that is at rest and in neutral at an intersection. if the collision is perfectly inelastic, what is the speed of the co
- Impurities and weak flavor can be eliminated in a consommé by A. adding a clarification mixture. B. adding clarified butter. C. straining it through a fine mesh sieve. D. doubling the herb mixtures.
- A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.57 nm. it then gives off a photon having a wavelength of 1944 nm. what is the final state of the hydrogen atom? values
- An x-ray machine uses photons with a frequency of 1 x 1017s-1. calculate the wavelength of this radiation.
- A slab of ice floats on a freshwater lake.what minimum volume must the slab have for a 45.0kg women to be able to stand on it without getting her feet wet? she then stands on a boat and what is the ve
- A water pipe tapers down from an initial radius of r1 = 0.23 m to a final radius of r2 = 0.08 m. the water flows at a velocity v1 = 0.84 m/s in the larger section of pipe. 1) what is the volume flow r
- Determine the angular velocity of the 12-kg inner gear, measured clockwise, when the link has made two revolutions starting from rest.
- F the intensity of an electromagnetic wave is 80 mw/m2, what is the amplitude of the magnetic field of this wave
- How much energy is required to rotate the propeller at 5600 rpm? ignore the energy required to push the air?
- In a certain oscillating lc circuit, the total energy is converted from electrical energy in the capacitor to magnetic energy in the inductor in 1.47 μs. what are (a) the period of oscillation in mic
- Set the cannon height to 14 m and the initial speed to 20 m/s. show how to calculate the location of the target. verify your prediction using the simulation. [calculate first and then verify with simu
- The balloon has a total mass of 400 kg including the passengers and ballast. the balloon is rising at a constant velocity of 18 km>h when h = 10 m. if the man drops the 40-kg sand bag, determine the v
- Two point charges, with charges q1 and q2, are each moving with speed v toward the origin. at the instant shown q1 is at position (0, d.and q2 is at ( d, 0). (note that the signs of the charges are no
- When a molecule of water vapro in the air come into contact with a cold can of soft drink, they lose energy, slow down, and form a liquid due to a decrease in what?
- What is the minimum width of a single slit (in microns) that will produce three minima for a wavelength 687 nm?
- You happen to come across a piece of metal which has a density of ρ = 7.20 g/cm3 when the temperature is t0 = 40.0 °c. if the metal is cooled to a temperature of t1 = 0.00 °c does the density chang
- A probe is launched from Earth and lands on Mars. The gravitational acceleration on Mars is 3.7 m/s2. Which statement best compares the mass and weight of the probe? The mass of the probe remains the
- Two people must have the same speed and velocity if they are walking towards each other, they are walking away from each other, they are jogging side by side, they are jogging to two different destina
- A woman is applying force to her watermelons, at a farmer's market, what types of friction goes against it?A: rollingB: staticC: sliding
- The flow of energy In a series circuit, energy is passed from one recipient to the next stops if one of the recipients has a problem. a. on the other hand b. previously c, however d, consequently
- A 5 cm object is 18.0 cm from a convex lens, which has a focal length of 10.0 cm. What is the distance of the image from the lens? Round your answer to three significant figures.
- Explain the relationship between a planet's distance from the sun, the lengthy of a year, and duration of it's orbit
- A tennis ball with a velocity of 9.45 m/s to the right is thrown perpendicularly at a wall. AFter striking the wall, the ball rebounds in the opposite direction with a velocity of -7.48 m/s to the lef
- What is the correct order of energy conversions associated with a power plant that uses nuclear fission reactions? -thermal to nuclear to mechanical to electrical -thermal to mechanical to nuclear to
- During a heat wave, there is an increased demand for electricity to operate air conditioners. The basic design of a nuclear reactor that generates electricity is shown below. What is the best way for
- A 581-kg satellite is in a circular orbit about earth at a height above earth equal to earth's mean radius. (a) find the satellite's orbital speed.
- Berapakah kapasitas dari generator van de graff yang akan menyimpan muatan 8Mc ketika diberi potensial 12 MV ?
- Suaru generator memiliki kumparan berdiameter 0,1m dengan jumblah lilitan 250 dan berputar 3600 rpm dalam medan magnetik 0,6 T. Tentukan tegangan maksimum yang dihasilkan generator?
- Which of the following questions can use science as a method of inquiry? How many of hours of homework should be assigned each night? Should pitbulls be allowed to live in cities? Why does a cork floa
- The excess internal pressure (above the external pressure) tries to open the bubble while the surface tension tries to close it.The excess internal pressure (above the external pressure) tries to open
- If an object loses 21.7x10^19 electrons, what would be the electric charge of this object, measured in Coulombs?
- The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy. fill in the blank
- A 935 kg drag race car accelerates from rest to 117 km/h in 0.749 s. What change in momentum does the force produce?
- Please help, I am very confused!! A wave has a wavelength of 11 mm and a frequency of 17 hertz. What is its speed?
- A simply supported wood beam of length l = 6 ft carries a concentrated load p at midspan, as shown. the cross-sectional dimensions of the beam are b = 6 in. and h = 11 in. if the allowable shear stren
- Continental __________ fill in volcano __________ fill in plains description low land between hills or mountains ____________ deep valley with high steep sides deepest part of the ocean volcano an
- At what depth, in meters, a column of mercury is the pressure 1.00 atm? the density of mercury is 13.6 × 103 kg/m3.
- Given an electron beam whose electrons have kinetic energy of 10.0 kev , what is the minimum wavelength λmin of light radiated by such beam directed head-on into a lead wall? express your answer nume
- How fast (in m/s and mph) would a 6.80-cm copper bar have to move at right angles to a 0.550-t magnetic field to generate 1.50 v (the same as a aa battery) across its ends?
- If this pulley is subjected to a constant counterclockwise angular acceleration of αa= 3 rad/s2 , determine the angular velocity of pulley b after b turns 5 revolutions. the hub at d is rigidly conne
- In lab, you performed an experiment with a spring to find the mass of an "unknown mass." if the spring constant is 9.50 n/m and the "unknown mass" caused a displacement of \delta 15.6 cm, what is the
- Point charge is moving at a constant 8.0 x 106 m/s in the + y-direction, relative to a reference frame. at the instant when the point charge is at the origin of this reference frame, what is the magne
- The active element of a certain laser is made of a glass rod 33.0 cm long and 1.30 cm in diameter. assume the average coefficient of linear expansion of the glass is equal to 9.00 10-6 (°c)-1. the te
- The development of cyclones and anticyclones about high- and low-pressure regions is a result of deflection of air currents by ____________.
- The hoisting gear a has an initial angular velocity of 60 rad>s and a constant deceleration of 1 rad>s2. determine the velocity and deceleration of the block which is being hoisted by the hub on gear
- The 200-mm-radius disk rolls without sliding on the surface shown. knowing that the distance bg is 160 mm and that at the instant shown the disk has an angular velocity of 8.4 rad/s counterclockwise a
- The signal generator has an open-circuit voltage of 3.5 v. when the generator is loaded with 22 ω resistance, its terminal voltage drops to 2.8 v. what is the generator's output impedance
- Treating the ladder as a uniform rod of length 3.66 m and mass 10.6 kg, find the torque the person must exert on the ladder to give it an angular acceleration of 0.243 rad/s2.
- What is the probability that an electron in the 1s state of a hydrogen atom will be found at a distance less than a/4 from the nucleus?
- Where qvis is the energy of activation for viscous flow, a is a temperature-independent constant, and r and t are, respectively, the gas constant and the absolute temperature. a plot of ln η versus 1
- Tim adds salt as he starts to heat a pot of water to cook pasta. When the water is boiling, he notices the salt has dissolved explain y
- How would you change the distance between two charged particles to increase the electric force between them by a factor of 16? a) reduce the distance by a factor of 4. b) increase the distance by a fa
- In an attempt to reduce our dependence on non-renewable resources, and cut down on the harm to the environment, we could burn ______ to produce electricity. (2 points)
- What one is a true statement about endothermic reactions? a)energy from an outside source is continuously being added b)the reaction container always feels hot c)the reactants have less heat energy th
- A pumpkin with a mass of 2.5 m/s was pushed toward a wall. The average acceleration of the pumpkin was 10.7 m/s. how much force was applied to the pumpkin to make it move?
- Use the following table of a school bus during morning pickups to calculate its average speed between 0 h and 2.34 h. Enter your answer in the space providedWILL MARK BRAINLIEST
- Use the following table of a school bus during morning pickups to calculate its average speed between 0 h and 2.34 h. Could you please also explain how you got your answer? WILL MARK BRAINLIEST
- 50 points! A 9.0 x 10^3 kg satellite orbits the Earth at the distance of 2.56 x 10^7 m from Earth’s surface. What is its period? Showing work is required! Thanks!
- A stationary rock is pushed off a very high cliff. Which graph correctly represents the acceleration due to gravity as the rock undergoes free fall to the ground? A) https://www.usatestprep.com/modul
- A 222-Newton upward net force is being applied to a 101010-kg object. What is the magnitude of the upward acceleration on the object (in\text{ m}/\text{s}^2 m/s 2 space, m, slash, s, start s
- A train travels 59 kilometers in 3 hours, and then 74 kilometers in 5 hours. What is its average speed?
- A 24 kg child descends a 5.0 m high slide and reaches the ground with a speed of 2.8 m/s. What is the child's Gravitational Potential Energy? (Assume gravity to be -10 m/s^2)
- Q7 During one compression stroke ( process) in an engine , 0.30 moles of air ( a diatomic ideal gas ) are compressed adiabatically from an initial volume and temperature of V1= 5.3 L and T1=277K to fi
- Q5 Two containers ( call them A and B ) with the same initial volume , V=47L, hold the same amount of monatomic ideal gas ,say helium , at the same initial temperature TI =304 K and the same initial
- Which of the following best explains the polarity of water (H2O)? A. Electrons are more attracted to the oxygen atom, so there is a partial negative charge on the oxygen atom. B. Since the oxygen atom
- Q4 i attach the full question Consider two long straight current - carrying wires seen end -on in the figure below . The wires are perpendicular to the screen of the computer the curr
- Q4 i attach the full question Consider two long straight current - carrying wires seen end -on in the figure below . The wires are perpendicular to the screen of the computer the cur
- Electrons in a photoelectric-effect experiment emerge from a copper surface with a maximum kinetic energy of 1.10 eV.
- The 2004 Indian Ocean tsunami was caused by a shift in two plates that pushed one section of the sea floor under another section of the sea floor by 5 meters. What type of boundary is this?
- ASAP which changes in an electric motor will make the motor stronger check all that apply using a stronger permanent magnet using a weaker permanent magnet increasing current in the electromagnet decr
- The appearance of Cyanobacteria in Earth's early history resulted in an excess of oxygen in the atmosphere which fueled the evolution of complex life. In what other ways did oxygen impact Earth?
- A 10t wagon moving at 4m/s strikes a 20t wagon moving at 2.5m/s in the same direction. After collision, the 10t wagon travels backwards at 3.6m/s. Find the velocity of the 20t wagon immediately after
- Which statement best describes the relationship between period and frequency of light waves? A) In wave B the period increases and the frequency is decreases from wave A. B) In wave A the period incre
- Q8I ATTACHED THE QUSTIONThe figure below shos a conducting loop being pulled out of a magnetic field at constant speed v. the width of the loop is W=0.14 m , the length of the loopis L =1.11 m , (L i
- This is an Assignment, it's not a quiz question it's a question my teacher gave me for the assignment. "Why is a globe useful as Scientific Models?" If you could explain it in 2 or 3 sentences that wo
- When you jump on the ground, the Earth exerts a greater force back up on you because it is so massive. Please select the best answer from the choices provided T F
- In the levers lab when you changed the position of the fulcrum, what else changed? A.Weight B.Gravity C.Resistance Force D.Effort Farci
- You do 116 J of work while pulling your sister back on a swing, whose chain is 5.10 m long, until the swing makes an angle of 32.0° with the vertical. What is your sister's mass?
- Within any ecosystem, there is a fixed amount of energy available for organisms to use. Since organisms usually produce more offspring than a given ecosystem can support, this causes _______.
- A D note has a frequency of 587.33 Hz. Calculate its wavelength in meters. CAN SOMEONE EXPLAIN HOW TO DO THIS PLEASE? currently I found the answer of 0.579m but don't know how to get there.
- Sue observes that when a baseball player slides toward a base, the ground exerts friction away from the base. Based on her observation, which conclusion is correct?Friction acts at a distance. Fricti
- A fulcrum moving a resistance of 200 g has a distance to the fulcrum of 20 cm, the effort mass of 50 g has a distance to the fulcrum of 80 cm. The resistance moves 10 cm, the effort moves 40 cm. Calcu
- Why would fossils found at the top of a canyon probably be younger than those found at the bottom of the canyon
- I am doing a paper on physics and I need a claim about how enry transformations when someone is kicking a soccer ball
- If you went on the moon’s near side during a new moon, how much of the side of Earth facing you would be sunlit?
- When a baseball player catches a baseball, the glove "gives" or moves backward. How does this movement affect the change in momentum of the baseball? The change in momentum increases because the impac
- Multicellular plants and animals have organs to perform specific functions.What do eukaryotic cells have to perform specific functions. A:ribosomes B:organelles C:cytoplasm D:vacuole
- True or false forces such as weathering and erosion that work to wear away high points and flatten out earths surface are called constructive forces
- The area under which of these graphs can be used to estimate the value of impulse? Graph A Graph B Graph C Graph D
- A cyclist rode at an average speed of 15mph for 30miles how long was the ride A) 0.5 1 Hour B)1 Hour C)2 Hours D)3 Hours
- A 51-kilogram sled is at rest. Susan pushes the sled until it travels at 11 meters per second. How much work has Susan done?
- MY QUSTION IN THE ATTACH CONSIDER A COLLECTION OF THREE POINT ACHARGE TWO EEQ
- An engine takes in QH JOULES OF HEAT AT A HOT TEMPERATURE T
- Which scenario would most likely result in the greatest percent error of the density of each metal? Assume Priya uses the same scale and graduated cylinder for each metal. using a graduated cylinder c
- If you are in a boat over the mariannas trench and dropped an 8lb bowling ball overboard, how long would it take to reach the bottom?
- In a simple electric circuit, a 110-volt electric heater draws 2.0 amperes of current. What is the resistance of the heater?
- In the animal cell, which of the labeled organelles is the rough endoplasmic reticulum? A) 2 B) 5 C) 9 D) 10
- O2 is a molecule. oxygen gas Question 1 options: True False Question 2 (1 point) Question 2 Saved Look at the image below: Which of the following is true? Question 2 options: All figures represent mol
- A wooden block A of mass 4.0 kg slides on a frictionless table when pulled using a massless string and pulley array by hanging box B of mass 5.0 kg, as shown in the figure. What is the acceleration of
- As light passes from air to water, some light is reflected from its surface. The angle of reflection is: A) less than the angle of refraction B) greater than the angle of refraction C) equal to the
- One section of a steel railroad track is 25 meters long, if its temperature increases by 40 K during the day, how long does the track expand? The coefficient of linear thermal expansion of steel 6 12
- 19. In which one of the following locations can a person hear the echo of a sound? A. At least 16.6 meters in front of the reflecting surface B. At least 33.2 meters behind the reflecting surface C. L
- A cube has a mass of 100 grams and its density is determined to be 1 g/cm 3 . The volume of the cube must be _____.
- Which of the following would most likely happen if water did not form hydrogen bonds A.Water would exist only as a solid. B. Water would be able to dissolve all ionic compounds. C. Water would not e
- A golfer hits a golf ball at an angle of 30 degrees from the ground, with an initial velocity of 120 ft/sec. It lands on the ground, after 5 seconds? How far did the golf ball travel horizontally?
- The solar nebula was a _____. rotating cloud made mostly of helium and hydrogen small galaxy gigantic sun central star surrounded by helium and hydrogen
- A relationship between distance and velocity is expressed by: parallax angles Cepheid variables astronomical units the Hubble Constant
- A solution is a special mixture where you cannot see the individual substances that are mixed. You look at two bowls of ice cream. One bowl is plain vanilla ice cream and the other is vanilla with cho
- What did Kikunae Ikeda discover, and how did it change the way taste is perceived almost a hundred years later?
- A circular coil of 20 turns and radius 5.0 cm is placed with its plane oriented at 90° to a uniform magnetic field of 0.10 t. the field is now increased at a steady rate, reaching a value of 0.50 t a
- By how much does the tunneling current through the tip of an stm change if the tip rises 0.020nm from some initial height above a sodium surface with a work function w=2.28ev? (hint: let the work func
- Determine how many times per second it would move back and forth across a 4.1-m-long room on the average, assuming it made very few collisions with other molecules.
- Most often we say that force causes acceleration. but when evan took a ride in a rocket sled at bonneville salt flats, blood was forced to the back of his brain, nearly blacking him out. identify the
- Why can the moon eclipse the sun on occasion? 1. sometimes they line up in a straight line. 2. the moon apears about the same size of the sun 3. the moon and sun both have an angular diameter of ½ de
- Water is the working fluid in an ideal rankine cycle. saturated vapor at 1000 psia enters the turbine. the condenser pressure is 1 psia and the working fluid exits the condenser as saturated liquid. t
- When two capacitors are connected in parallel across a 12.0 v rms, 1.32 khz oscillator, the oscillator supplies a total rms current of 554 ma . when the same two capacitors are connected to the oscill
- A source vibrating at constant frequency generates a sinusoidal wave on a string under constant tension. If the power delivered to the string is doubled, by what factor does the amplitude change?
- A source vibrating at constant frequency generates a sinusoidal wave on a string under constant tension. If the power delivered to the string is doubled, by what factor does the amplitude change?
- A roofing tile slides down a roof and falls off the edge 10m above the ground at a speed of 6 m/s. The roof makes an angle of 30 degrees to the horizontal. How far from the exit point on the roof does
- Light travels at a speed of 1.86 X 105 miles per second. The sun is approximately 9.3 X 107 miles. About how long does it take light to travel from the sun to the earth ?
- An object with a mass of 7.65kg dropped from the top of a building and falls a distance of 28 m to the ground how much work does earth gravity do on the object from the time it is dropped to the time
- A 150 kg object takes 1.5 minutes to travel a 2500 straight path it begins the trip traveling 120 m/s and decelerates to a velocity of 20 m/s what was its acceleration
- Megan left her bicycle outside on the patio while she went on vacation for several weeks. When she returned, Megan discovered a reddish substance, rust, on the handlebars of her bicycle. The rust is a
- What will be the effect of two forces of equal magnitude acting on a moving rigid body from opposite directions along the same line
- A piece of wire 17 m long is cut into two pieces. one piece is bent into a square and the other is bent into an equilateral triangle. (a) how much wire should be used for the square in order to maximi
- At the beginning of the compression process of an air- standard otto cycle, p1 =1 bar, t1 =290 k, v1 =400 cm3. the maximum temperature in the cycle is 2200 k and the compression ratio is 8. determine
- From mechanics, you may recall that when the acceleration of an object is proportional to its coordinate, d2xdt2=âkmx=âÏ2x, such motion is called simple harmonic motion, and the coordinate depends
- How much work did the movers do (horizontally) pushing a 46.0-kg crate 10.5 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50?
- If wave (a) has a wavelength of 4.0 m and a frequency of 1.5Ã108 cycles/s, what are the wavelength of wave (b)?
- When mantle rocks near the radioactive core are heated, they become less dense than the cooler, upper mantle rocks. These warmer rocks rise, while the cooler rocks sink. This movement of warmer and co
- Suppose a cylindrical habitat in space 8.00 km in diameter and 47.0 km long has been proposed. such a habitat would have cities, land, and lakes on the inside surface and air and clouds in the center.
- The journals in an oil engine are 80 mm in diameter. and 50 mm long. the bearing housing has an id of 80.13mm. each supports a load of 10,000n when the shaft is rotating at 3000 rpm. the bearing is lu
- The system consists of two blocks with m=5 kg each, spring with k=100 n/m, and pulley with radius r=0.1 m and ip=0.1 kg.m2. the system is released from rest with the spring unstretched. determine the
- Two strings are adjusted to vibrate at exactly 310 hz . then the tension in one string is increased slightly. afterward, three beats per second are heard when the strings vibrate at the same time. par
- What material has the high resistivity value of a formation layer (ex: water, oil, quartz, clay, etc) and how is the explanation?
- Why is the sun considered the biggest star in the solar system? by James Swingland https://www.quora.com/Why-is-the-sun-considered-the-biggest-star-in-the-solar-system/answer/James-Swingland-1?share=8
- An orange bumper car (mass=450kg) going 4.5 m/s hits a yellow car that is traveling at 3.7 m/s from behind, causing the orange car to slow down to 3.6 m/s and the yellow car to speed up to 4.4 m/s. Wh
- An elevator does 150,000 J of work while exerting a force of 1000 N to take people to the top floor of a building. What distance does the elevator travel? 3 m 150 m 149,000 m 150,000,000 m
- E) An astronaut lands on an alien planet. He uses a pendulum (L = 10.0cm) to produce simple harmonic motion, as shown in this graph.c. What is the acceleration due to gravity on the surface of the pla
- A car has a mass of 1.00 × 103 kilograms, and it has an acceleration of 4.5 meters/second 2. What is the net force on the car?
- Rock sediments are carried to other places by the wind, running water, and gravity. As these forces lose energy settling takes place. The sediments settle out of the air or water in rock particles gra
- NEED HELP FAST:Consider the Freebody diagram if some of the tension force is equal to the force of gravity which description best applies?
- mathematically speaking the energy of a wave is directionally proportional to the square of the amplitude of the wave. calculate the energy of a wave that has an amplitude of 4 units
- How much energy in megajoules is given up by 0.75kg of water at 0 C when it freezes to form ice at 0 C
- Imagine a Carnot engine has a hot reservoir of 680 K and a cold reservoir of 220 K. What is the efficiency of the engine?
- If you row a boat Upstream at 25 kilometers per hour and the river has a downstream velocity of 10 kilometers per hour how fast and in what direction will you move
- The role of the excretory system is to rid the body of toxic waste products. Which of these body systems also plays a direct role in removing waste products from the body?
- Which statement best describes how a wave would move differently through a pot of boiling water than the steam created from it? A.The wave would move faster through the water than through the steam. B
- PLZZZZZ HELP!!!! (40PTS) How do the recordings of the slow shakes compare to those when the table was shaken strongly? How would the seismogram of a magnitude 9 earthquake compare to that of a 5 magni
- PLZZZZZ HELP!!!!! (40PTS) How do the recordings of the slow shakes compare to those when the table was shaken strongly? How would the seismogram of a magnitude 9 earthquake compare to that of a 5 magn
- Which of these is generally considered to have been discovered by Einstein? -space is empty -mass bends Space-time -gravity causes acceleration -an electric charge produces an electric field around
- What is the name of the part of the wave that is labeled with the question mark?https://media.edgenuity.com/contentengine/frames/2a178704-9018-11e3-966b-bc764e043e0c/3208-10-03-10-11-image1.png
- A block of height 120mm is placed on top of another block with a height of 1.50 m. What is the height of the two blocks together?
- How long should the nicot wire be taken to become a 70-resistive nicron iron heater when the wiring cross-section area is o, 2 is the specific resistance of nicrome ..
- On May 18, 1980, Mount St. Helens in Washington State experienced a huge volcanic eruption after a magnitude 5.1 earthquake. During the eruption, hot ash and pumice poured down the west, south, and ea
- A point charge is used to determine the electric field around a charged particle. Why is it necessary that the point charge does not affect the position of the charge being tested?
- A ___vector____________ is a quantity that is fully described by both _____magnitude______ and _____direction________.
- This problem is about how strongly matter is coupled to radiation, the subject with which quantum mechanics began. For a simple model, consider a solid iron sphere 2.00 cm in radius. Assume its temper
- One differentiating characteristic between vascular and nonvascular plants is the lack of active transport structures in the nonvascular plants. How does the lack of xylem or phloem contribute to the
- Vascular plants can be divided into three categories. These categories are A).flowering, nonflowering, and leafy. B).leafy, ground, and underwater. C).seedless, seed (nonflowering), and seed (flowerin
- A small puck with a mass of 0.10 kilograms is sliding in the +x-direction on an air table with an initial speed of 8.0 meters/second. The puck collides with a larger puck that is initially at rest. Th
- Which change increases the electric force between objects? Two neutral objects are moved closer together. Electrons are added to two negatively charged objects. Two oppositely charged objects are move
- The principle of superposition states that in undisturbed rock layers, the youngest layer of rock will be on the bottom, while the oldest layer will be on the top.
- A block of mass m = 2 kg has a speed v and is behind a block of mass m = 44 kg that has a speed of 0.5 m/s. the surface is frictionless. the blocks collide and couple. after the collision, the blocks
- What physical property causes you to lean one side when the bus you are traveling in takes a sharp turn?
- A completely reversible heat engine operates between a thermal reservoir at 1500 r and a another at 400 r. if the entropy of the sink increases by 10 btu/r, how much will the entropy of the source
- A gaussian surface in the shape of a right circular cylinder with end caps has a and a length of 80.0 cm. through one end their net flux of 25.0 mwb. at the other end there is a uniform magnetic field
- A guitar string has a mass per length of 2.33×10−3kg/m and a fundamental frequency of 146.8 hz when it is under a tension of 82.4 n. the string breaks, and its owner has only a spare string of mass
- A 15 kg child is sitting on a playground teeter-totter, 1.5 m from the pivot. what is the magnitude of the minimum force, applied 0.3 m on the other side of the pivot that is needed to make the child
- An rlc circuit has a resistance of 200 ???? and an inductance of 15 mh. its oscillation frequency is 7000 hz. at time t = 0 the current is 25 ma and there is no charge on the capacitor. after five com
- A roller-coaster car has a mass of 494 kg when fully loaded with passengers. (a) if the vehicle has a speed of 20.7 m/s at point a, what is the force in newtons exerted by the track on the car at this
- A series rlc circuit consists of a 92.0 ω resistor, a 0.160 h inductor, and a 35.0 μf capacitor. it is attached to a 120 v/60 hz power line. what is the peak current i at this frequency
- A solid uniform disk of diameter 3.20 m and mass 42 kg rolls without slipping to the bottom of a hill, starting from rest. if the angular speed of the disk is 4.27 rad/s at the bottom, how high did it
- A stream of air at 37°c and 50% relative humidity flowing at a rate of 1250 kg/h is to be cooled to 15°c and dehumidified in a spray tower. the air is saturated as it emerges from the tower. liquid
- A thick copper wire connected to a voltmeter surrounds a region of time-varying magnetic flux, and the voltmeter reads 13 volts. if instead of a single wire we use a coil of thick copper wire containi
- A very long solenoid with a diameter of 3 cm and length 20 cm is wound with 500 turns of wire. when current in the wire is reduced from 10 a to zero in 0.2 s, what average emf is induced in the soleno
- Ball is thrown eastward into the air from the origin (in the direction of the positive x-axis). the initial velocity is 60 i + 80 k, with speed measured in feet per second. the spin of the ball result
- (8c32p7) suppose that a parallel-plate capacitor has circular plates with radius r = 70.0 mm and a plate separation of 5.7 mm. suppose also that a sinusoidal potential difference with a maximum value
- A car drives toward the right over the top of a hill, as shown below. Which arrow represents the centripetal acceleration? W X Y Z
- What does xylem do in a plant Transport food Transport water Prevent water loss Preform photosynthesis
- What is the difference between angular speed and linear speed and how i can deduce the law of angular speed
- I had a little confusion with this question. Thanks if you can take out the time to help! (: Describe what would happen to both air temperature and soil temperature if cold weather were to pass throug
- Which of the following is true about gravity?Check all that apply. ￼A.Two objects experience a greater gravitational pull when they are closer together. ￼B.Gravity causes objects in free fall to f
- Bob mixed 5 mg of sodium hydroxide pellets in 100 mL of water. Describe how the rate of the solution changes when he adds 1 mg more of sodium hydroxide pellets.
- Bob mixed 5 mg of sodium hydroxide pellets in 100 mL of water. Describe how the rate of the solution changes when he adds 1 mg more of sodium hydroxide pellets.
- For an object to be in free fall: ￼A.Earth's gravity must be the only force acting on it. ￼B.the mass of the object must remain constant as it falls. ￼C.it must be falling to Earth with constant
- An astronaut takes an iPod onto the space shuttle. An identical iPod remains on Earth. Which statement about the pull of Earth's gravity on the iPods is true? ￼A.Earth's gravity has a stronger pull
- A chemical is a representation of a compound that gives the number of atoms and types of atoms in that compound.
- A chemical is a representation of a compound that gives the number of atoms and types of atoms in that compound.
- A 160.-kilogram space vehicle is traveling along a straight line at a constant speed of 800. meters per second. The magnitude of the net force on the space vehicle is (1) 0 N (3) 8.00 × 10^2 N (2) 1.
- Which of the following is the best example of an object in free fall? ￼A.A ball rolling across a floor ￼B.An airplane landing ￼C.A bird flying ￼D.A person diving
- Steven buys a pair of scissors instead of getting a haircut. He belives the scissors will last for a long time, while the haircut will only last a few weeks. In this case, scissors is a good, while th
- Sound waves traveling through liquids tend to move faster than sound waves traveling through And, in general, sound waves move the fastest through 1st box : solid or gases 2nd box : gases, liquids, a
- It requires 350 joules to raise a certain amount of a substance from 10.0°C to 30.0°C. The specific heat of the substance is 1.2 J/g°C.
- Light of wavelength lembda is incident nirmally on a diffration gratting for which the slit spacing is equal to 3 lembda. what is the sine of angle between the second order maximum and the normal
- Light of wavelength lembda is incident nirmally on a diffration gratting for which the slit spacing is equal to 3 lembda. what is the sine of angle between the second order maximum and the normal
- Which of the following states that all matter tends to "warp" space in its vicinity and that objects react to this warping by changing their paths?
- Which of the following states that all matter tends to "warp" space in its vicinity and that objects react to this warping by changing their paths?
- A basketball rolls off a deck that is 3.2 m from the pavement. The basketball lands 0.75 m from the edge of the deck. How fast was the basketball rolling? Seema lists the given values in a chart and d
- A bird is flying due east, it distance from a tall building is given by x(t) = 28m +(12.4m/s)t + (0.045 m/s^3)t^3. what is the instantaneous velocity of the bird at t = 8s
- HELP!! A reaction in which the reactants have more energy than the products is always a(n) _____ reaction.??? endothermic decomposition replacement exothermic
- A satellite completes one revolution of a planet in almost exactly one hour. At the end of one hour, the satellite has traveled 2.0 × 107 meters and is only 10 meters away from its starting point. Wh
- Which list accurately identifies the hierarchy of space from largest to smallest? Solar system, galaxy, planet, universe Galaxy, solar system, planet, moon Galaxy, solar system, universe, moon Solar s
- Which of the following statements are true of thermal energy and kinetic energy?Check all that apply.
- Which of the following statements are true of thermal energy and kinetic energy?Check all that apply.
- Which of these formulas represents 1 atom of sodium (Na) chemically combined with another element? A. PbS B. NaCl C. 2NaOH D. Na2H3IO6
- A food product that contains 15% solids non-fat, 2% fat,and 83% water is to be pasteurised by heating to 95℃ by direct steam infusion using 90% quality steam at 15psig. After heating to 95℃, the p
- Find minimum value of the coefficient of static friction to prevent car from skidding: A car travels 25 m/s around a curve of radius 120 m on a level track
- 1 -A body of mass 1 kg has weight 10 N at a certain place. What is the weight of a 100 g, b 5 kg, c 50 g? 2 -The force of gravity on the Moon is said to be one-sixth of that on the Earth. What would a
- A ferris wheel has a radius of 5.0m and makes one revolution in 8.0 seconds. a person weighing 670n is sitting on one of the benches attached at the rim of the wheel. what is the apparent weight (the
- A hawk flies in a horizontal arc of radius 11.3 m at a constant speed of 5.7 m/s. find its centripetal acceleration. answer in units of m/s 2 .
- A metal sphere with charge q=5.1 μc and radius r=2.8 cm is concentric with a larger metal sphere with charge q=12 μc and radius r=6.8 cm. (a) what is the magnitude of the potential difference betwee
- An unknown immiscible liquid seeps into the bottom of an open oil tank. some measurements indicate that the depth of the unknown liquid is 1.5 m and the depth of the oil (specific weight ???? 8.5 kn/m
- A point charge with charge q1 = 3.50 μc is held stationary at the origin. a second point charge with charge q2 = -4.10 μc moves from the point ( 0.160 m , 0) to the point ( 0.245 m , 0.240 m ). how
- Consider a room that is initially at the outdoor temperature of 20oc. the room contains a 40-w lightbulb, a 110-w tv set, a 300-w refrigerator, and a 1200-w iron. assuming no heat transfer through the
- For the instant represented, car a is rounding the circular curve at a constant speed of 26 mi/hr, while car b is slowing down at the rate of 4.2 mi/hr per second. determine the magnitude of the accel
- Which of the following elements is most important for respiration? carbon oxygen hydrogen nitrogen
- If the mass of the eyeball is 7.9 g, what is the effective spring constant of the musculature attached to the eyeball?
- Of the charge q on a tiny sphere, a fraction α is to be transferred to a second, nearby sphere. the spheres can be treated as particles. (a) what value of α maximizes the magnitude f of the electros
- The equilibrium constant is given for two of the reactions below. determine the value of the missing equilibrium constant. a. 3.5 x 10-5 b. 2.8 x 104 c. 8.1 d. 0.12 e. 89
- The relative humidity in a greenhouse at 45 °c is 92.0%. calculate the vapor pressure of water vapor in the greenhouse.
- This problem explores the behavior of charge on conductors. we take as an example a long conducting rod suspended by insulating strings. assume that the rod is initially electrically neutral. for conv
- Suppose you have a coffee mug with a circular cross section and vertical sides (uniform radius). What is its inside radius if it holds 400.0 g of coffee when filled to a depth of 6.00 cm? Assume coffe
- What is the maximum wavelength of light capable of removing an electron from a hydrogen atom in the energy states characterized by n = 1 and n = 4? (the rydberg constant for hydrogen is approximately
- White light is incident on a material with an index of refraction for red light (n = 1.348), and an index of refraction for blue light (n = 1.449). the angle theta is 43.8 degrees. if the frequency of
- If the velocity of an abject changes from 65 m/s to m/s during a time interval of 12 s what is the acceleration of the object
- Charlie is investigating friction. She will use the same amount of force to push two wooden balls across two level surfaces. Then she will record her results in the table below. Which prediction will
- Justin notices a particular type of caterpillar feeds only on cottonwood trees in his neighborhood.In which way has Justin increased his scientific knowledge
- Which one of the following statement does not accurately describe the diatonic scale as it corresponds to the setup on a piano keyboatd
- Which one of the following statement does not accurately describe the diatonic scale as it corresponds to the setup on a piano keyboatd
- A series circuit contains three 2 Ω resistors and a 6 Ω resistor. The current in each resistor is 4.0 A. What is the voltage of the battery in the circuit? 2.0 V 3.0 V 32 V 48 V
- Different kinds of substances have different properties. Compare and contrast the electrical properties of salts, metals, and acids.
- The left ventricle of a resting adult's heart pumps blood at a flow rate of 81.0 cm3/s, increasing its pressure by 110 mm Hg, its velocity from zero to 25.0 cm/s, and its height by 5.00 cm. (All numbe
- A box is to be made out of a 12 by 20 piece of cardboard. squares of equal size will be cut out of each corner, and then the ends and sides will be folded up to form a box with an open top. find the l
- What is the self-inductance of a solenoid 30.0 cm long having 100 turns of wire and a cross-sectional area of 1.00 × 10-4 m2?
- You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind and you perceive the frequency as 1,310 hz. you are relieved that he is in pursuit of a
- A train travels 63 kilometers in 2 hours, and then 72 kilometers in 4 hours. What is its average speed?
- What is the acceleration of an object if the velocity of am objects changes from 65 ms during a time interval of 12 s?
- Mike shoots a large marble (Marble A, mass: 0.05 kg) at a smaller marble (Marble B, mass: 0.03 kg) that is sitting still. Marble A was initially moving at a velocity of 0.6 m/s, but after the collisio
- If the coefficient of static friction is less than that found above, and if the coefficient of kinetic friction between the block and the table is .05, find the time it takes for the 6kg mass to fall
- The sixth string of a guitar has standard tuning frequency of 82.41 hz. if the length of the vibrating string is 95.0 cm and its mass density is 8.90 g/m, what is the tension in the string at the stan
- A baseball is seen to pass upward by a window 20 m above the street with a vertical speed of 15 m/s. the ball was thrown from the street. (a) what was its initial speed? m/s (b) what altitude does it
- A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. she produces an angular acceleration of 27.5 rad/s2 and her lower
- If hubble's constant is actually half the value we believe it to be (70 km/(s mpc)), the universe would be
- Cobwebs are popular decorations at Halloween time, but an experiment in which spiders were given psychoactive substances showed that it really affects their web spinning skills! The web below was spun
- Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. the yellow disk is initially at rest and is struck by the orange disk moving with
- A beam of sound arrives perpendicular to your abdomen from the air. what's the percentage of sound energy density enters your body (regard as water)? (speed of sound in air and water is 340m/s and 1,5
- A horizontal uniform bar of mass 2.4 kg and length 3.0 m is hung horizontally on two vertical strings. string 1 is attached to the end of the bar, and string 2 is attached a distance 0.74 m from the o
- Using signed 8-bit representation, determine the result of 53 - 88. show how you got your answer using binary arithmetic and the 2's complement system.
- A charge per unit length given by l(x) = bx, where b = 12 nc/m2, is distributed along the x axis from x = +9.0 cm to x = +16 cm. if the electric potential at infinity is taken to be zero, what is the
- Consider three capacitors c1, c2, and c3 and a battery. if only c1 is connected to the battery, the charge on c1 is 32.2 µc. now c1 is disconnected, discharged, and connected in series with c2. when
- True or false the light that is emitted from a semiconductor, upon external stimulation, is longer and longer in wavelength as the particle size of the semiconductor decreases.
- What is the single most important parameter in determine the material removal rate in a machining process?
- (a) find the potential at point p. (q = 2.5 x 10-9c, a = 50 cm) (b) how much work by an external force is required to move a charge of - 3 µc to point p. (c) if the particle (mass = 5.0 µg) were rel
- The gravitational acceleration on a planet's surface is 16.0 m/s2. what is the gravitational acceleration at an altitude of one planet diameter above the surface of the planet?
- Calculate wa, the work done by the gas as it expands along path a from v0 to va=rvv0. express wa in terms of p0, v0, and rv.
- Consult concept simulation 6.1 in preparation for this problem. a golf club strikes a 0.065-kg golf ball in order to launch it from the tee. for simplicity, assume that the average net force applied t
- The desk has a weight of 75 lb and a center of gravity at g. determine its initial acceleration if a man pushes on it with a force f = 60 lb. the coefficient of kinetic friction at a and b is mk = 0.2
- At a pressure of one atmosphere oxygen boils at −182.9°c and freezes at −218.3°c. consider a temperature scale where the boiling point of oxygen is 100.0°o and the freezing point is 0°o. deter
- A 129-kg astronaut (including space suit) acquires a speed of 2.30 m/s by pushing off with her legs from a 1850-kg space capsule. use the reference frame in which the capsule is at rest before the pus
- 68 kg tennis ball is given an angular momentum of .00272 kgm2/s when struck by a racquet. if its radius of gyration is 2 cm, what is its angular velocity
- What minimum number of cycles are necessary for the engine to lift a rock of mass 570 kg through a height of 150 m?
- A counter-flow double-pipe heat exchanger is to heat water from 20°c to 80°c at a rate of 1.2 kg/s. the heating is to be accomplished by geothermal water available at 160°c at a mass flow rate of 2
- What frequency frecede is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it? express your answer in h
- A 58-in. (inside) diameter garden hose is used to fill a round swimming pool 7.5 m in diameter. part a how long will it take to fill the pool to a depth of 1.7 m if water issues from the hose at a spe
- A soccer ball is kicked with a speed of 20 m/s at an angle of 35 degrees above the horizontal. how long is the ball in the air?
- Which has the larger kinetic energy, a 13 g bullet fired at 490 m/s or a 10 kg bowling ball rolled at 11 m/s?
- What spring constat would you need to have a 3 kg mass oscillate on the spring iwht hte same period t as the mass owuld have hanging from a simple?
- A long, flexible, and very light strip of metal, such as a saw blade, is clamped to the edge of a table, extending horizontally over the edge like a miniature diving board. when a gob of putty is plac
- An rlc circuit has a capacitance reactance, due to its capacitance, of 11 kω; an inductive reactance, due to its inductance, of 3 kω; and a resistance of 29 kω. what is the power factor of the circ
- Unpolarized light passes through three ideal polarizing filters. the first filter is oriented with a horizontal transmission axis, the second one has its transmission axis at 30° from the horizontal,
- A boeing 747 aircraft weighing 580,000 lb when loaded with fuel and 100 passengers takes off with an airspeed of 140 mph. with the same configuration (i.e., angle of attack, flap settings, etc.), what
- Based on this flow rate, and aorta diameter of 0.7 cm, calculate the average velocity and reynolds number of flow in the aorta. is the flow likely to be laminar or turbulent?
- What is the volume v of a sample of 2.40 mol of copper? the atomic mass of copper (cu) is 63.5 g/mol, and the density of copper is 8.92×103kg/m3?
- A camera lens with index of refraction greater than 1.30 is coated with a thin transparent film of index of refraction 1.25 to eliminate by interference the reflection of light at wavelength λ that i
- When the block is 0.22 m from the equilibrium position (half of the initial displacement), what percent of the total energy of the spring-block system is kinetic energy?
- Javelin at 72 meters/second. he throws it at an angle of 22 degrees. how fast is he throwing it in the x-direction in meters/second?
- The components of vector A and vector B are: Ax=+7.6 Bx=+15.2 Ay=-9.2 By=-18.4 which equation describes the relationship between the two vectors? A. B=A+(2,0) B. B=A C. B=7.6A D. 68
- Before you begin your lab, you need to form a hypothesis that reflects which material, voltage, and number of winds you think will produce the strongest electromagnet
- Acceleration is defined as the rate of change for which characteristic? position time displacement velocity
- Which of these best describe the energy transformation that occur to generate electricity from wind energy
- In a video game, a flying coconut moves at a constant velocity of 20 meters/second. The coconut hits an obstacle and moves in the opposite direction with the constant velocity of 10 meters/second. Wha
- A car travels up a hill at a constant speed of 40 km/h and returns down the hill at a constant speed of 60 km/h. calculate the average speed for the round trip.
- A disk-shaped merry-go-round of radius 3.16 m and mass 147 kg rotates freely with an angular speed of 0.724 rev/s. a 52.3-kg person running tangential to the rim of the merry-go-round at 3.38 m/s jump
- A ground state hydrogen atom absorbs a photon of light having a wavelength of 94.92 nm. it then gives off a photon having a wavelength of 4.050 × 103 nm. what is the final state of the hydrogen atom?
- A light-rail commuter train accelerates at a rate of 1.55 m/s2. how long (in s) does it take to reach its top speed of 80.0 km/h, starting from rest?
- An automobile engine slows down from 3000 rpm to 900 rpm in 3.0 s.(a) calculate its angular acceleration, assumed constant.rad/s2(b) calculate the total number of revolutions the engine makes in this
- An object has a position given by r⃗ = [2.0 m + (3.00 m/s)t] i^ + [3.0m−(4.00 m/s2)t2] j^, where all quantities are in si units. what is the magnitude of the acceleration of the object at time t =
- A rightward force of 302 n is applied to a 28.6 kg crate to accelerate it across the floor. thye coefficient of friction between the crate and the floor is 0.750. determine the acceleration
- A sky diver with a mass of 70 kg jumps from an aircraft. the aerodynamic drag force acting on the sky diver is known to be fd = kv @, where k = 0:25n s2=m2. determine the maximum speed of free fall fo
- A submersible craft is being designed to operate in the atlantic ocean. the density ρ of salt water is 1.025 grams per cubic centimeter. for a maximum design depth of 300 feet, what is the minimum pr
- At what temperature would a 1.45 m nacl solution freeze, given that the van't hoff factor for nacl is 1.9? kf for water is 1.86 ∘c/m . express your answer with the appropriate units.
- Determine the change in internal energy of 8.00 kg of water when it is all boiled to steam at 100 ∘c. assume a constant pressure of 1.00 atm.
- Four identical metal spheres have charges of qa = -8.0 μc, qb=-2.0 μc, qc=+5.0 μc, and qd=+12.0 μc. (a) two of the spheres are brought together so they touch, and then they are separated. which sp
- How many milliliters of water at 23 °c with a density of 1.00 g/ml must be mixed with 180 ml (about 6 oz) of coffee at 95 °c so that the resulting combination will have a temperature of 60 °c? assu
- If the joint is subjected to an axial force of p = 8.1 kn , determine the average shear stress developed in each of the 6-mm diameter bolts between the plates and the members.
- In a physics lab experiment, a spring clamped to the table shoots a 18 {\rm \;g} ball horizontally. when the spring is compressed 21 {\rm \;cm} , the ball travels horizontally 4.9 {\rm \;m} and lands
- Problem #3 : a spherical pressure tank is made of 1050 cold-drawn steel (sy = 84 ksi, su = 100 ksi). the tank has a 40" inner diameter, has a ½" wall thickness, and is pressurized cyclically between
- The cantilever footing is used to support a wall near its edge a so that it causes a uniform soil pressure under the footing. determine the uniform distribution loads, wa and wb, measured in lb/ft at
- The gulf stream off the tip of florida has a flow of 35 sv (1 sv = 109 m3/s). what is the flow in milliliters per minute? what mass of water flows past the tip in 24 hours? how much time is required f
- The tractor-trailer unit is moving down the incline with a speed of 5 mi/hr when the driver brakes the tractor to a stop in a distance of 4 ft. estimate the percent increase n in the hitch-force compo
- Two compact sources of sound oscillate in phase with a frequency of 130 hz where the speed of sound is 340 m/s. at a point that is 3.40 meters from one source and 3.87 meters from the other, the ampli
- Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. during the process, 30 kj of heat is transferred to the water, and 5 kj of heat is lost to the surroundin
- A helicopter is traveling at 86km/h at an angle of 35° to the ground. what is the value of Ax and Ay?
- Robby skateboards 0.50 blocks to his friends house in 1.2 minutes. what is his speed/9366704/aa0c54ad?utm_source=registration
- Potassium chlorate decomposes to produce 20 g of solid potassium chloride. Oxygen gas is also produced. Which best describes the mass of oxygen? It is more than the mass of potassium chloride. It is l
- A bicycle tire has a pressure of 6.00 ✕ 105 N/m2 at a temperature of 20.0°C and contains 1.90 L of gas. What will its pressure be (in Pa) if you let out an amount of air that has a volume of 150 cm
- Lizzie loves to stargaze at night. She has noticed that the moon appears to change shape over the course of the month, and she wants to investigate why this happens. She hypothesizes that the relation
- Increase of green house gases, due to human activity, is warming the oceans. This causes changes in climate. Name three Earth spheres which interact in this process. Justify your answer.
- A fire hose ejects a stream of water at an angle of 39.5 ° above the horizontal. the water leaves the nozzle with a speed of 26.0 m/s. assuming that the water behaves like a projectile, how far from
- A lead ball is dropped in a lake from a diving board 5.13 m above the water. it hits the water with a certain velocity and then sinks to the bottom with the same constant velocity. it reaches the bott
- A proton moves 2.00 cm parallel to a uniform electric field of 243 v/m. how much work is done by the field on the proton?
- As a sailboat sails 59.0 m due north, a breeze exerts a constant force f with arrow1 on the boat's sails. this force is directed at an angle west of due north. a force f with arrow2 of the same magnit
- A spherical cavity is excised from the inside of the sphere. the cavity has radius a4 and is centered at position h⃗ , where |h⃗ |<34a, so that the entire cavity is contained within the larger sph
- A student standing on the ground throws a ball straight up. the ball leaves the student's hand with a speed of 6 m/s when the hand is 2.0 m above the ground. how long is the ball in the air before it
- Calculate the process capability ratio (cp) for both the temperature and thickness variables. is the polymer-coating process able to meet the engineering standards 99.7% of the time? explain.
- Consider a 0.2-mm diameter air bubble in a liquid. determine the pressure difference between the inside and outside of the air bubble if the surface tension at the air-liquid interface is
- Does the amount of heat absorbed as 1 kg of saturated liquid water boils at 100°c have to be equal to the amount of heat released as 1 kg of saturated water vapor condenses at 100°c? why or why not?
- Four point charges, each of magnitude 18.45 µc, are placed at the corners of a square 21.7 cm on a side. if three of the charges are positive and one is negative, find the magnitude of the force expe
- How much charge is moved by the battery in c? you may assume the specific heat of baby formula is approximately the same as for water, and the specific heat of glass is 0.840 j/(g⋅°c), and the spec
- If a=i+2j+ka=i+2j+k and b=i+12j+kb=i+12j+k, find a unit vector with positive first coordinate orthogonal to both aa and bb.
- If the electric field strength in air exceeds 3.0 ✕ 106 n/c, the air becomes a conductor. using this fact, determine the maximum amount of charge that can be carried by a metal sphere 1.8 m in radiu
- Which of these provides the most creative method to date rocks based on their position in a layer? Select one: a. Law of Superposition b. Law of Unconformities c. Principle of Uniformitarianism d. Pr
- In the previous question, the person had an initial velocity of 8m/s and a constant acceleration of −4m/s2. how would the maximum distance he travels to the right of the origin change if instead his
- One dimensional, steady-state conduction with uniform internal energy generation occurs in a plane wall with a thickness of 50mm and a constant thermal conductivity of 5 w/(m*k). for these conditions,
- Suppose that she pushes on the sphere tangent to its surface with a steady force of f = 75 n and that the pressurized water provides a frictionless support. how long will it take her to rotate the sph
- The electric potential at a position located a distance of 21.9 mm from a positive point charge of 6.80×10-9c and 14.5 mm from a second point charge is 1.14 kv. calculate the value of the second char
- The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective
- What is the maximum instantaneous power dissipated by a 3.3-hp pump connected to a 240-vrms ac power source? 1 hp = 746 w?
- A rock has a mass of 25 kg. the acceleration due to gravity is 10m/2^s and the height of the rock is 42m. find the potential energy of the rock
- When water breaks apart, it releases positively charged ____________ ions and negatively charged ____________ ions?
- You are measuring the speed of light through a material and come up with a value of 1 x 108 m/s. from this you can deduce that:
- What is the time required for an object starting at rest to fall freely 500 meters near earth surface
- Which properties can be used to determine whether a substance is a liquid or a plasma? Check all that apply.
- A 3.8 kg object is lifted 12 meters. Approximately how much work is performed during the lifting? A. 446.9 J B. 372.4 J C. 588 J D. 45.6 JA 3.8 kg object is lifted 12 meters. Approximately how much wo
- A 3.8 kg object is lifted 12 meters. Approximately how much work is performed during the lifting? A. 446.9 J B. 372.4 J C. 588 J D. 45.6 JA 3.8 kg object is lifted 12 meters. Approximately how much wo
- A 3.8 kg object is lifted 12 meters. Approximately how much work is performed during the lifting? A. 446.9 J B. 372.4 J C. 588 J D. 45.6 JA 3.8 kg object is lifted 12 meters. Approximately how much wo
- What are the job prospects for students with either a bachelor’s degree, master’s degree, or a doctoral degree in psychology?
- What are the job prospects for students with either a bachelor’s degree, master’s degree, or a doctoral degree in psychology?
- A golf ball is hit an an initial speed of 30 m/s. if the ball is directed at an angle of 55° above the horizontal, what is its horizontal range of the ball?
- A pendulum has 295 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom of its swing?
- An elite runner can run with a speed of 30 m/s. if the runners mass is 25 kg, what is their kinetic energy?
- Answers to a physics student from pittsford throws a ball thrown horizontally from the top of a building with a speed of 8 m/s. the student measures the height of the building to be 15m what is the ba
- A quantity of an ideal gas is contained in a balloon. initially the gas temperature is 27°c. you double the pressure on the balloon and change the temperature so that the balloon shrinks to one-quart
- A spherical balloon has a radius of 11.5 m, and is filled with helium. how large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 1000 kg? neglect the bouyant fo
- A uniform, 0.0300-kg rod of length 0.400 m rotates in a horizontal plane about a fixed axis through its center and per- pendicular to the rod. two small rings, each with mass 0.0200 kg, are mounted so
- G to correct myopia, concave lenses are prescribed. if a student can read her physics book only when she holds it no farther than 18 cm away, what focal length of lens should be prescribed so she can
- A student pulls on a 20 kg box with a force of 50 N at an angle 45 degrees relative to the horizontal. The box increases speed at a rate of 1.5 m/s2. What is the approximate normal force on the box?
- A small 30 kilogram canoe is floating downriver at a speed of 2 m/s. what is the canoes kinetic enegry?
- I need help with a couple of questions. 1 The smaller molecules from which polymers are built are called #####= blank 2 is How do polymers form?
- When two objects push or pull on each other, which type of energy is being transferred? A:Chemical Energy B:Electrical Energy C:Mechanical Energy D:Sound Energy
- A certain pendulum consists of a 1.5-kg mass swinging at the end of a string (length = 2.0 m). at the lowest point in the swing the tension in the string is equal to 20 n. to what maximum height above
- 9. WHERE SHOULD YOU START MAKING A U-TURN WHEN DRIVING ON A DIVIDED STREET WITH MULTIPLE LANES IN YOUR DIRECTION? A. On the shoulder B. In the left lane C. In the median
- A is 300 kpa, the volume flow rate of water at 10°c delivered to the tank is 0.0035 m3/s. if we want to reduce the flow rate in half, what should the valve opening (s/d) be? the pressure at a still r
- A lens of focal length 40 mm is mounted on a 35 mm camera. the lens aperture is set at f/5.6 and the shutter speed set at 1/250 s. a different camera has a lens of focal length 56 mm in place. the shu
- A 4.00-m-long, 460 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. a 73.0 kg construction worker stands at the far end
- An astronaut has a mass of 70 kg. what is the weight of the astronaut on earth at sea level? what are the mass and the weight of the astronaut on the moon, and on mars? what is the ratio of the pressu
- A particle with a charge of 7.80 nc is in a uniform electric field directed to the left. another force, in addition to the electric force, acts on the particle so that when it is released from rest, i
- A solid hemisphere of radius b has its flat surface glued to a horizontal table. a second solid hemisphere of different radius a rests on top of the first one so that the curved surfaces are in contac
- Case omicron: augustino stands on the scale which is placed on a shallow ramp which has a very low incline angle. case upsilon: augustino stands on the scale which is placed on a level floor. case iot
- Copy the order form from lab exercise 2, part 3 to l4p3.html. (you can use the unix command cp l2p3.html l4p3.html to do this or copy it locally and upload the copy with your sftp tool.) make a link t
- Find the magnitude of the magnetic flux through the floor of a house that measures 21 m by 18 m . assume that the earth's magnetic field at the location of the house has a horizontal component of 2.8
- Find the magnitude of the net torque τ acting on the system. be sure to use the absolute value function in your answer, since no comparison of m1, m2, and mbar has been given. express your answer in
- Imagine that the container from the problem introduction is now filled with n identical gas particles of mass m. the particles each have different x velocities, but their average x velocity squared, d
- In pulse amplitude modulation encoding, the general rule is that we need to sample at twice the bandwidth. in addition, if we use n bits for each sample, we can represent 2n loudness (amplitude) level
- Refrigerant 134a enters a condenser operating at steady state at 60 ibf/in.2and 140°f and is condensed to saturated liquid at 60 lbf/in.2on the outside of tubes through which cooling water flows. in
- The bar ab is supported by two smooth collars. at a the bar is rigidly attached to the collar, and at b the collar is connected to the bar by a ball-and-socket joint. if a 100 lb load is applied to th
- The drawing shows a golf ball passing through a windmill at a miniature golf course. the windmill has 12 blades and rotates at an angular speed of 1.75 rad/s. the opening between successive blades is
- The full-wave converter used as an inverter in fig. 4-14 has an ac source of 240 v rms at 60 hz, r 10 , l 0.8 h, and vdc 100 v. the delay angle for the converter is 105. determine the power supplied t
- The large blade of a helicopter is rotating in a horizontal circle. the length of the blade is 5.8 m, measured from its tip to the center of the circle. find the ratio of the centripetal acceleration
- The sketches below show a circular coil and a permanent magnet; the arrows indicate both the magnitude and the direction of the velocities of the magnet and coil. in which situations will the induced
- Two fully annealed cylindrical specimens of an alloy are to be hardened by reducing their (always circular) cross-sections in an extrusion process. for one specimen, the initial and post-deformation r
- University physics 6.81: calculate the friction. consider the system shown below. the rope and pulley have negligible mass, and the pulley is frictionless. initially the 6.00 kg block is moving downwa
- We have discussed the motion of electrons in a conductor and the conditions under which ohms law arises in a resistor. but there are other situations in which potential differences lead to current flo
- When landing after a spectacular somersault, a 40.0-kg gymnast decelerates by pushing straight down on the mat. calculate the force she must exert if her deceleration is 7.00 times the acceleration du
- While traveling on a dirt road, the bottom of a car hits a sharp rock and a small hole develops at the bottom of its gas tank. if the height of the gasoline in the tank is 28 cm, determine the initial
- You are traveling on a hilly road. at a particular spot, when your car is perfectly horizontal, the road follows a circular arc of some unknown radius. your speedometer reads 90.0 km/h, and your appar
- If the mass of a material is 44 grams and the volume of the material is 15 cm^3, what would the density of the material be?
- Hiro rubs an inflated balloon on his hair, and his hair sticks to the balloon. As he moves the balloon away from his head, how does the electric force change? The electric force increases because the
- What is the force between two small charged spheres that have charges of 2 x 10–7 C and 3 x 10–7 C and are placed 30 cm apart in air?
- A box is pulled by a string with horizontal force t across a horizontal, frictionless table. if the box starts from rest, what is the relationship between the speed v1 after the box has moved a distan
- A 1 510-kg automobile has a wheel base (the distance between the axles) of 3.10 m. the automobile's center of mass is on the centerline at a point 1.30 m behind the front axle. find the force exerted
- A rod consisting of two cylindrical portions ab and bc is restrained at both ends. portion ab is made of steel (es 5 29 3 106 psi, as 5 6.5 3 1026 /8f) and portion bc is made of aluminum (ea 5 10.4 3
- Based on the thermodynamic properties provided for water, determine the energy change when the temperature of 0.250 kg of water decreased from 109 °c to 30.5 °c.
- The data sheet for the transistor reports that v b e , o n = 0.7 v vbe,on=0.7 v and β = 110 β=110. your lab partner, freddie, biases the transistor such that v c c = 16 v vcc=16 v, r c = 800 ω rc=8
- In the parallel rlc circuit at right, let r = 8 k, l = 0.2 mh, and c = 8 µf. (a) calculate ω 0 , q, and the bandwidth b. (b) find ω 1 and ω 2 .
- You are designing eyeglasses for someone whose near point is 60 cm. what focal length lens should you prescribe so that an object can be clearly seen when placed at 25 cm in front of the eye
- What is the name for a small depression created by the melting of a chunk of ice in glacial ˢᴱᴰᴹᴵᴺᵀ
- Sandra is working hard to gain some strength for spring track. She has not done much this winter, so she has decided she will do bench presses and curls on Monday, stomach and back exercises on Wednes
- In a given chemical reaction, the energy of the products isn’t greater than the energy of the reactants. Which statement is true for this reaction?
- Two football players collide on the field. Before the collision, their total momentum was 450 kgm/s to the north. What is their total momentum after the collision? A. More than 450 kgm/s north B. 450
- When the Wave moved through your line of students, What Actually moved? In What direction? (Be Sure to explain in full sentences.)
- Two bodies A and B placed on a scale pan supported by a light inextensible string are placed on each other, in such a way that body A is placed on body B , the weight of bodies B and A are ,4N and 2N
- Find the value of T1 if 1 = 30°, 2 = 60°, and the weight of the object is 139.3 newtons. 69.58 newtons 45.05 newtons 25 newtons 98.26 newtons
- When Emma pushes a bag with a force of 27 newtons, the coefficient of kinetic friction between the bag and the floor is 0.23. What is the normal force acting on the bag by the floor? 0.085 newtons 27
- A doctor uses an instrument that emits light and allows the doctor to view the inside of a patients intestine. What is the doctor most likely using?
- Over the course of a year areas near Earth's equator receive more direct energy from the Sun than areas near Earth pole which of the following correctly describes one result of this heating pattern
- The law of reflection states that if the angle of incidence is 76 degrees, the angle of reflection is ___ degrees.
- See attachment there are 2 pipes viewed from the side, pipes A and B. Their masses are 80lb and 60lb. how much force must be applied to pipe B to make the pipes not move. assume that the pipes can mov
- A transformer has a primary coil with 300 turns and a secondary coil with 600 turns. If the output voltage is 75 volts, what is the input voltage?
- What is the temperature of a metallic block in a thermal equilibrium with a mixture of ice and water at 1 atm pressure? A)0C B)273k. C)0K. D)100C
- A window washer stands on a scaffolding 30m above the ground. If he did 23,520J of work to reach the scaffolding, what is his mass?
- Two deer run toward each other one deer has a mass of 20 kg and runs west with a speed of 5m/s. while the other has a mass of 30 kg and runs east with a speed of 4 m/s. what is the total momentum of t
- Compare and contrast these forces. You must provide two ways that they are alike and two ways that they are different. You may make a list, write in paragraph form, or make a chart.
- As more and more energy is added to the atoms of a solid plastic, what will the plastic change into first
- On an ice skating rink, a girl of mass 50 kg stands stationary, face to face with a boy of mass 80 kg. The children push off of one another, and the boy moves away with a velocity of +3 m/s. What is t
- The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. surface 1 has an area of 1.4 m2, while surface 2 has an area of 4.6 m2. the electric field e in
- Which statements describe the relationship of Earth and its moon? Check all that apply. The moon orbits Earth following a nearly circular path. The gravitational pull of Earth on the moon is parallel
- How is power defined? a. the rate at which is accomplished b. the direction of a force applied to an object c. the total distance an object is moved d. the quantity of work accomplished
- In an attempt to reduce our dependence on nonrenewable resources and cut down on the harm to the environment, we could burn ____to produce electricity
- In late adulthood, changes in memory may bot be inevitable however, any decline in memory tends to invite
- Which elements can form acidic compounds? Check all that apply. sulfur rubidium arsenic selenium silicon xenon antimony
- Two people timed an object with a stop watch. They each got a slightly different result. How could this be?
- The graph shows all of the stable isotopes of elements according to the numbers of protons and neutrons in their nuclei. (the graph is in the attachment) Which statements are supported by the graph? C
- Which element is a halogen and has a larger average atomic mass than arsenic (As)? A. selenium (Se) B. iodine (I) C. strontium (Sr) D. chlorine (Cl)
- What is the displacement of a spring if it has a spring constant of 10 N/m, and a force of 2.5N is applied
- If a football player positioned on the scrimmage line runs straight downfield for 26 yards and then cuts to his left for 6.0 yards to receive a pass, what is the football player's total displacement f
- Explain how drinking through a straw illustrates fluid flowing from high-pressure to low-pressure areas.
- An unstretched spring is 19.0 cm long. when you hang an 835 g weight from it, it stretches to a length of 22.0 cm .
- ) two stereo speakers mounted 4.52 m apart on a wall emit identical in-phase sound waves. you are standing at the opposite wall of the room at a point directly between the two speakers. you walk 2.11
- When we talk about the speed of light, we typically think of visible light. though physicists have performed experiments that demonstrate?
- Is there a relationship between the magnitude of the bond dipole and how the molecule is affected by the electric field?
- Part iv: more than meets the eye (transformer) in a transformer, moving electrons in one coil create a magnetic field. when the created magnetic field interacts with a second coil, electrons can be fo
- Complete the sentence to describe what a wave is and what it does. A wave is a ___ that carries ___ from one place to another.
- A policeman starts giving chase 60 seconds after a stolen carzooms by at 108 km>hr. At what minimum speed should hedrive if he has to catch up with the driver before he managesto get onto an expresswa
- As Aubrey watches this merry-go-round for a total of 2 minutes, she notices the black horse pass by 15 times. What is the period of the black horse?
- What is the correct sequence of materials, in order of increasing light-transmitting capabilities (from least to most)?
- It's nighttime, and you've dropped your goggles into a 3.0 m swimming pool. If you hold a laser pointer 1.0 m above the edge of the pool, you can illuminate the goggles if the laser beam enters the wa
- What is electricity? A) the orbit of electrons around a nucleus B) the flow of positive electric charge C) the flow of negative electric charge D) the flow of electric charge
- Which part of a refrigerator determines whether it is an open or close system? how can you change the system from close to open
- Displacement vectors of 4 km south, 2 km north, 5 km south, and 5 km north combine to a total displacement of..?
- A tank with a flat bottom is filled with water to a height of 4 meters. What is the pressure at any point at the bottom of the tank? (You can ignore atmospheric pressure when calculating your answer.)
- Our Sun is one of many stars in the Milky Way Galaxy. Which term BEST describes our Sun? A) red giant B) protostar C) white dwarf D) medium sized star
- A ball is dropped from a place above the girl in the figure. She is watching the path of the ball.Why does the ball continue moving in the same direction A. A balanced force is acting on the ball B. G
- If the same force is applied to each of the balls shown below,which one will move the slowest? A. m=7.3kg B. m=1.0 C. m=0.75kg D. M=0.5kg
- . When a police officer uses radar for speed control, the officer is using what kind of electromagnetic waves? X-rays gamma rays radio waves ultraviolet rays
- A teacher pushed a 10kg desk across a floor for a distance of 5m. she exerted a horizontal force of 20n. how much work was done?
- Maslow's hierarchy of needs assumes individuals are generally misinformed and need guidance from therapists individuals are generally good and committed to improving themselves individuals are general
- A circular test track for cars has a circumference of 3.5 km . A car travels around the track from the southernmost point to the northernmost point. what distance does the car travel?
- Lead has a density of 11.3 g/cm^3. If you have 1.0 kg of lead, what is the volume in cubic centimeters (cm^3?)
- Based on the definition of specific heat and the information provide below, if the same amount of heat is added to 1 kg of all these substances, which substance will raise in temperature to the highes
- A 480 kilogram airboat at rest applies a force of 800 Newtons for 12 seconds what is the final velocity of the Airboat
- The electric fan shown has the following specifications: The entire unit weighs W = 15 lb with the center of gravity shown. The fan produces a maximum thrust of T = 6 lb. The height h can be adjusted
- Explain the effect of using controlled rectifiers in AC circuitsUsing waveform diagrams, explain the output characteristic of a controlled rectifier
- Two children are pulling and pushing a 30.0 kg sled. The child pulling the sled is exerting a force of 12.0 N at a 45o angle. The child pushing the sled is exerting a horizontal a force of 8.00 N. The
- A train travels 94 kilometers in 5 hours, and then 84 kilometers in 3 hours. What is its average speed?
- Natural gas is very abundant in the United States. Compared to other fossil fuels, which describes the waste products of the combustion of natural gas? A) Natural gas has no waste products. B) Natural
- This diagram shows a skier moving down a hill. Which statement best describes the skier? The skier has potential and kinetic energy.The skier has only potential energy. The skier has only kinetic ene
- For saving lives, what is the most important safely feature on a car a. air bag b. safely belt c. anti-lock brakes
- Every year the Earth travels about 109km as it orbits the Sun. What is Earth's average speed in km/h?
- A seat on a Ferris wheel moves at a constant tangential speed around the wheel. If the seat is 7 m from the center of the wheel and has a tangential speed of 0.5 m/s, what centripetal acceleration doe
- What kind of information doea the nutrition facts label give about requirements for essential nutrients
- The city council is going to decide on whether or not to spray a certain insecticide for mosquito control. Many other towns already use this insecticide but your town wants to research the topic befor
- What is electricity A) the movement of molecules B) the movement of atoms C) the movement of circuits D) the movement of electrons
- If you have a string of lights and one light goes out but others stay lit, which type of circuit do you have A) broken B) short C) series D) parallel
- A pure solid such as naphthalene is heated until it all melts and the temperature of the liquid is then 90 degreesC. When the liquid cools, its temperature falls to about 800 C and then it remains con
- While researching life during colonial times, Carson learns that people would extract potassium hydroxide from wood ashes and mix it with animal fat. What were the colonists doing? generating hydrogen
- Is it possible for several scientists who have never met each other to contribute to the same scientific knowledge, theory, or law? Explain your answer.
- You drive a bumper car into another bumper car whose driver has a much larger body mass that you do. Who experiences more of a jolt, you or the other driver? Explain your answer.
- In the 1887 experiment by Michelson and Morley, the length of each arm was 11m. The experimental limit for the ring shift was 0.005 fringes. If sodium light was used with the interferometer (λ = 589
- A runner moves 2.38 a second North accelerates at .310 m/sssquared at a -62 degree angle how many seconds later is she running directly east
- A car is traveling at 16m/s when the brakes are applied. The brakes decelerate the car at the rate of 5.0m/s^2. How long will it take to stop the car?
- Resultant of two equal forces may have the magnitude equal to 1 of the forces .At what angle the equal forces this is possible?Justify
- What is the magnitude of the gravitational know for checking a 4.0 kg object which is 1.0m from a 1.0 kg object
- What is the magnitude of the gravitational force acting on a 4.0kg object which is 1.0m from 1.0kg object
- Select all that apply. Choose the statement(s) that best describe Earth's hydrologic, rock, and tectonic cycles. They continuously recycle Earth's materials. They contribute to a balance or equilibriu
- What is an example of a hypothesis leading to a new experiment? Upon seeing bacteria under the microscope, scientists theorized that they could be the cause of illness. Galileo dropped different balls
- Find the vertical displacement D(t) between the raised hands of the two players for the time period after Boris has jumped (t>tR) but before Arabella has landed.Find the vertical displacement D(t) bet
- What animal dies in a desert area with the help of scavengers and bacteria it decomposes completely in the hot sun is second animal dies while drinking in a stream the body is covered in sediment befo
- In a thundercloud there may be an electric charge of 50 C near the top of the cloud and −50 C near the bottom of the cloud. If these charges are separated by about 3 km, what is the magnitude of the
- The block in the illustration is floating in water. Water has a density of 1.0 g/cm 3 and about 30 percent of the block is below water. What is a good estimate of the density of the block? A) 0.90g/cm
- Which of Shakina's statements regarding acceleration and velocity is false? "When the acceleration and velocity are in opposite directions, the particle slows down." "When the acceleration and velocit
- A linear circuit is shown below. Figure 4-1 The elements in this circuit have the following values: R1=200Ω, R2=200Ω, R3=200Ω, V1=3V, I1=2A and I2=2A Determine the potentials at nodes A and B, assu
- What is the cell cycle? A. repeating series of stages a dividing cell got through. B. the time a cell spends actively dividing. C. process of duplication of genetic material. D. repeating process of D
- Which action do researchers take to make advances in science? They guard their findings against the scrutiny of outside sources. They share their experimental results with other researchers. They redu
- If the worst fit line gradient is 9 and the best fit line gradient is 8, find the accepted gradient and uncertainty
- A 10 gram sample of butter will melt at a temperature that is the melting point of 5 gram sample of butter
- It takes Delta U=402.3 J to raise the temperature of an amount of water by a certain temperature. How fast must a 0.42 kg ball trabel in order for it kinetic energy to equal this internal energy?
- David starts at a position of x=0 meters at the left side of the front of the classroom. Over the course of the class he walks back and forth in front of the class 15 times, 6 meters to the right, and
- The period of a sound wave coming from an instrument is 0.002 seconds. What is the frequency of the sound?
- A student pushes a book with a force of 5N to the east. which statement decribes the reaction force?
- Jim is rearranging his apartment and needs to move his entertainment center. If the gravity exerts 15 N and there is 10 N of friction, how much force will Jim need to exert to move it?
- The amount of fuel used to heat and cool your home can be reduced by good ____? A- Recycling B- conservation C- efficiency D- capacity E-fans F-misters G- insulation H-fission Please help me asap I'm
- A force of 15 N is applied to a spring, causing it to stretch 0.3 m. What is the spring constant for this particular spring?
- How does the anatomy of the endocrine and integimentary systems correlate with the sense organs? what role does radiology and utilizing nuclear medicine play in this line of care?
- Kiley went 5.7 km/h north and then went 5.8 km/h west. From start to finish, she went 8.1 km/h northwest.Which best describes her numbers?5.7 km/h north and 5.8 km/h west are instantaneous speeds, whi
- I question wasn't answer how long will a tongue piercings close I had mine about 7 years and been out about 5 years
- A 16.03 piece of iron absorbs 1086.75 joules of heat energy and its temperature changes from 25 degrees C to 175 degrees C calculate specific heat of iron
- A simple pendulum has wooden bob. If it is replaced by a copper Bob of same size,will there be any change in it's time period ? Explain
- Calculate the slip of a 2 pole 3 phase induction motor when the supply frequency is 50 Hz and the rotor current frequency is 2 Hz.Full workings please and readable formatThanks
- A d.c. self-excited shunt generator has a field resistance of 160Ω. The generated emf is 420V and it supplies a load of 55kW Calculate the armature resistance when the generator terminal voltage is
- When a psychologist describes a developing culture as “primitive,” what bias are they displaying? A. sexism B. ethnocentrism C. racism D. xenocentrism
- If you are skateboarding and have to make a sharp turn to avoid a branch, in which direction are you accelerating?
- . Calculate the tensional force in a 5 m length of string that whirls a 2.5 kg mass at 15 m/s in a horizontal circle?
- Which best described how the current scientific model of the atom was developed? the model was the result of hundreds of years of experiments recent experiments invalidated most of the work of the las
- The force of attraction or repulsion between two magnetic poles is similar to which of the following laws? Biot-Savart Force Law Coulomb’s Law Ohm’s Law Faraday’s Law
- The red supergiant Betelgeuse has a diameter of 1,680,000,000 km. If Betelgeuse is located 197 parsecs (pc) away, what is its apparent size (in arcseconds)?-- Note: The attached image shows multiple e
- Which best compares a brush and a commutator in an electric motor? A- Both rotate when the motor is on. B- Both carry electrical current from a power source. C- Both remain stationary when the motor i
- Cereal plants gain chemical potential energy as they grow. Which form of energy is converted to create the chemical potential energy? gravitational potential energy kinetic energy light energy thermal
- A car is moving with a velocity of 20 meters/second has 1.8 x 10^5 joules of kinetic energy what is the mass of the car
- A 100-kg boulder sits on the top of a 50-meter high cliff. It falls off. How fast is it traveling just before it hits the ground? A. 31 m/s B. 490 m/s C. 98 m/s D. 245 m/s
- A hot air balloon with a mass of 400 kilograms moves across the sky with 3200 joules of kinetic energy. The velocity of the balloon is
- An electron is introduced to an electric field with a strength of 3uN/C. Find the force acting on the electron dueto the field.What is the force between two protons that are 1cm apat? Is the farce rep
- PLZZ HELP ASAP!!! 20pts How do fossils tell scientists about the past environment? How would they know if there was once water, when water no longer is present?
- Which of these is true regarding weight but NOT mass? Question 1 options: a.Weight is based on density, mass is not. b.Weight is proportional to volume, mass is not. c.Weight changes based on inertia,
- A student makes measurements from which she calculates the speed of sound as 327.66m/s She estimates that her result is accurate to +-3% Which of the following gives her result expressed to the approp
- A 60kg skier starts at the top of a ten meter high slope. at the bottom she is traveling 10 m/s. how much energy does she lose to friction?
- What was formed when the when the pacific and north american plates converge? A. Mountain St. Helens B. The Mid-Atlantic Ridge C. The San Andreas fault D. The Hawaii Islands
- A virtual image has a ____ image distance (q) and is located in ____ of the lens. a. positive, front c. negative, front b. positive, back d. negative, back
- Snowboarding cautiously down a step slope at a speed of 7.0 m/sec, sarah, whose mass is 50. kilograms, is afraid she won't have enough speed to travel up a slight uphill grade ahead of her. She extend
- David is driving at a steady 29.0m/s when he passes Tina. I go is sitting in her car at rest. Tina accelerates at a steady 2.5m/s^2 at the instant David passes. I what is her speed as she passes him
- SOMEONE PLZ HELP ME OUT ILL GIVE 30pts Match the vocabulary word with the correct definition. 1. obstacles or difficulties that prevent exercise -regular exercise 2. conditioning that strengthens th
- Match the type of fitness with the correct example. 1.an exercise that stretches your back 2.lifting a heavy object 3.a fast walk in the park 4.a jumping exercise that makes you breathe hard 5.to
- (THE SUBJECT IS LANGUAGE ARTS I NEED HELP I'LL GIVE BRAINLIEST) In this discussion, you will talk about belonging to a place and of the information, or understandings, that belonging involves. What mu
- David keeps harping over any problem that he comes across at work. He goes over the details regarding the problem repeatedly. In the end, David is confused about the problem, and is therefore unable t
- ANSWER ASAP The gravitational force between two objects: A) is always the same B) will decrease if either object gains mass C)will increase if the objects are moved closer together
- A mass initially at rest, spontaneously decays into two masses both traveling at 3/5 the speed of light. what fraction of the original mass was lost in the decay?
- ANSWER ASAPPPPP Evan finds a rock while hiking. It has a fossil in it. The rock is most likely a(n): A) igneous rock B) sedimentary rock C) metamorphic rock
- ANSWER ASAPPPPPP Rocks that are melted by heat and then cooled are classified as: A) igneous B) sedimentary C) metamorphic
- A plane flies horizontally at an altitude of 5 km and passes directly over a tracking telescope on the ground. when the angle of elevation is π/4, this angle is decreasing at a rate of π/3 radians p
- A turtle crawls along a straight line, which we will call the x-axis with the positive direction to the right. the equation for the turtle's position as a function of time is x(t) = 53.5 cm + (2.01 cm
- ANSWER ASAPPPPPPPPPPPPPPP Pressure waves passing through the liquid outer core are: A) bent B) reflected C) absorbed D) canceled
- A wall has a negative charge distribution producing a uniform horizontal electric field. a small plastic ball of mass 0.0242 kg, carrying charge of −103 µc, is suspended by an uncharged, nonconduct
- Current passes through a solution of sodium chloride. in 1.00 second, 2.68×1016na+ ions arrive at the negative electrode and 3.92×1016cl− ions arrive at the positive electrode. part a what is the
- 39 for an fcc single crystal, would you expect the surface energy for a (100) plane to be greater or less than that for a (111) plane? why?
- If the diameter of the space station is 830 m , how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.80m/s2?.
- 75-kg of water that is initially at 0.5 mpa and 30 percent quality occupies a spring-loaded piston–cylinder device. this device is now cooled until the water is a saturated liquid at 100oc. calculat
- Light illuminates two closely spaced thin slits and produces an interference pattern on a screen behind. how will the distance between the fringes of the pattern differ for red light and blue light?
- One of the fastest recorded pitches in major-league baseball, thrown by joel zumaya in 2006, was clocked at 101.0 mi/h (fig. p3.22). if a pitch were thrown horizontally with this velocity, how far wou
- The double pulley shown is attached to a 10-mm-radius shaft that fits loosely in a fixed bearing. knowing that the coefficient of static friction between the shaft and the poorly lubricated bearing is
- The ignition temperature of 87-octane gasoline vapor is about 430 ∘c and, assuming that the working gas is diatomic and enters the cylinder at 20 ∘c, determine the maximum compression ratio of the
- Two thin parallel slits that are 0.0116 mm apart are illuminated by a laser beam of wavelength 585 nm. (a) on a very large distant screen, what is the total number of bright fringes (those indicating
- What are the (a) x- and (b) y- components of the net electric field produced at point p at y = 8.00 m?
- When an ion accelerates through a potential difference of 2330 v , its electric potential energy decreases by 7.46×10−16 j ?
- ANSWER ASAPPPPPPPP BE 100% CORRECT Which of the following is not a variable property for a gas? A) mass B) density C) volume D) shape
- How would the absence of gravity affect the formation of planets? A The rocks and debris would take longer to accrete into a planet. B The rocks and debris would never accrete into a planet. C The roc
- The velocity of an object is equal to the distance divided by time. The equation is velocity = distance/time. If you wanted to calculate the TIME required for an object to travel a distance and you kn
- Monochromatic light with a wavelength of 6.4 E -7 meter passes through two narrow slits, producing an interference pattern on a screen 4.0 meters away. The first order bright band lines are 2.0 E -2 m
- The power rating of a clock is 10 W, and the cost of electrical energy is $0.15 per kilowatt-hour. Rounded to the nearest cent, how much does it cost to run the clock for one whole week?
- A famous motorcycle company has just built its first electric model. Like all vehicles, the purpose of the motorcycle is to put out kinetic energy.How much energy goes toward kinetic energy?
- A woman steps in front of a child to jeep him from running off.which term best descrives this example
- Your neighbor Paul has rented a truck with a loading ramp. The ramp is tilted upward at 35 ∘, and Paul is pulling a large crate up the ramp with a rope that angles 20 ∘ above the ramp. Paul pulls
- Typical backyard ants often create a network of chemical trails for guidance. Extending outward from the nest, a trail branches (bifurcates) repeatedly, with 60˚ between the branches. If a roaming an
- The 3 characteristics of minerals are: they are liquids they are solids They are naturally occuring They are inorganic substances with a specific composition and crystal structure They are made from o
- Find the direction and magnitude of the net force exerted on the point charge q2 in the figure. Let q=+2.0uC and d= 42cm
- When an insect ventures onto a spiderweb, a slight vibration is set up alerting the spider. the density of spider silk is approximately 1.3 g/cm3, and its diameter varies considerably depending on the
- The driver of a car drives 3.00 km north, 2.00 km northeast (45.0 east of north), 4.00 km west and then 3.00 km southeast (45.0 east to north). Where does he end up relative to his starting point? Wor
- Estime el volumen y masa de agua que existe en un lago. La forma del lago es aproximadamente circular, tiene casi 500 metros de diámetro y se supone que tiene una profundidad promedio de 15.0 metros
- The transverse wave shown has a wavelength of 1.5 m and is traveling in the x-direction. How long does it take the wave to travel 6.0 m in the x-direction? 0.13 seconds 0.67 seconds 2.0 seconds 8.0 se
- The density of a corn syrup is is 1.37 g/ml. How much volume does corn syrup take up if it weighs 17.3 N?
- As mentioned in this week’s notes on page 4, the electrons of an atom can occupy different energy shells within the atom (similar to how the planets all occupy different orbits around the Sun). Elec
- Use the momentum equation for photons found in this week's notes, the wavelength you found in #3, and Plank’s constant (6.63E-34) to calculate the momentum of this photon: .0E-27 kgm/s 1.8E-27 kgm/s
- A man out walking his dog makes one complete pass around a perfectly square city block. He starts at point A and walks clockwise around the block
- A man out walking his dog makes one complete pass around a perfectly square city block. He starts at point A and walks clockwise around the block
- Once cells with nuclei developed, organisms were able to become more complex, which allowed them to adapt to the conditions in more habitats. By which process do organisms adapt and evolve? A) mitosis
- What is the potential energy of the system composed of the three charges q1, q3, and q4, when q1 is at point R? Define the potential energy to be zero at infinity.
- If the frequency of a sound wave is 250 hertz and its wavelength is 1.36 meters, what is the wave's velocity? 250 meters/second
- Vector A makes an angle of 31.7° above the positive x-axis, and vector B makes an angle of 45.0° below the negative x-axis. A = 2.97 units, and B = 1.80 units. Find A + B and A - B.
- What happens to the velocity of a sound wave in air if the temperature of the air increases? A.The frequency of the sound wave increases. B.The velocity of the sound wave decreases. C.The energy of th
- An electric flux of 145 Nm2/C passes through a flat horizontal surface that has an area of 0.635 m2. The flux is due to a uniform electric field. What is the magnitude of the electric field if the fie
- A person is moving for 2 minutes with a constant speed of 4 m/s how far of a distance would the person cover
- Standing at the edge of a building of height 9.2m, a woman reaches out over the edge and throws a penny vertically upward. It rises, then falls past her, hitting the ground below 2.5s after release. W
- If the pitch of a sound decreases and the sound source is moving, is the sound source moving toward or away from the observer
- Calculate the potential, kinetic energy, mechanical energy, velocity, and height of the ball at the various locations.
- A 6 cm object is 8 cm from a convex lens that has a focal length of 5 cm. The image is 4 cm from the lens. The height of the image is cm.
- In a summer storm the wind is blowing with a velocity of 8m/s north. Suddenly in 3 seconds, the winds velocity is 23m/s north. What is the winds acceleration?
- A sample of 20.0 moles of a monatomic ideal gas (γ = 1.67) undergoes an adiabatic process. The initial pressure is and the initial temperature is The final temperature of the gas is What is the final
- A race car travels on a circular track at an average rate of 125 mi/h. The radius of the track is 0.320 miles. What is the centripetal acceleration of the car? 391 mi/h2 40.0 mi/h2 5,000 mi/h2 48,800
- I need the lab report about the force table.
- A ball is dropped from the top of a building. The gravitational force is 10 N down, and the force of air resistance is 1 N up. What is the net force?
- lab report
- In what type of climate do trees produce wider rings? cool and dry warm and wet cool and wet warm and dry
- This morning a 1 - kw electric heater was switched on for one hour. Trace back as far as you can the various forms the energy had before it was used for heat. Assume a coal-fired power plant. Now trac
- A student weighing 664 N climbs at constant speed to the top of an 12 m vertical rope in 17 s. what is the average power expanded by the student to overcome gravity?
- In their work on collision, Trautz and Lewis explained how chemical reactions occur and why they have different reaction rates. This work is an example of a theory because it is a well-tested, widely
- Charge q2 is 2.5 *10^-9 and charge q1 has mass .20 g. the separation r is 5 cm, and the angle is 15 degree. find q1 ( magnitude and sign)
- If the pitch of the sound coming out of a speaker increases, which statement is true about the sound wave?
- a basket player releases the ball 7 ft above the floor when he is 30 ft from the basket. The ball goes through the rim of the basket (which is 10 ft above the floor) 1.5 seconds after release. Find th
- Suppose you are building a series circuit with a battery and a small light bulb and you run out of wire what common objects could you use to connect the battery to the light bulb explain please. Thank
- The density of atmosphere (measured in kilograms/meter3) on a certain planet is found to decrease as altitude increases (as measured from the planet's surface). What is the type of relationship betwee
- The main difference between the internal combustion engine and the diesel engine is that the diesel engine A. does not utilize pistons. B. does not have a crankshaft. C. has no ignition system. D.
- A skier with a potential energy of 137,200 j waits on top of a ski jump that is 200 m high what is the mad as of the skier
- A particle is located at the vector position r = (3i+2j) m and the force acting on it is F = (2i+3j) N . The torque of the force about the origin is
- 1) Which situation is an example of transferring heat by means of convection? A) the sun warming the earth B) the weather patterns outside C) you toasty-warm in some footy pajamas D) you accidenta
- A rock dropped on the moon will increase its speed from 0 m/s to 4.9 m/s in about 3 seconds. what value do you calculate for the magnitude of the acceleration of gravity on the moon
- If a ball is given an initial speed of 15 m/s on a horizontal, frictionless surface, how fast will the ball be rolling in 5 seconds?
- A policeman starts giving chase 60 seconds after a stolen carzooms by at 108 km>hr. At what minimum speed should hedrive if he has to catch up with the driver before he managesto get onto an expresswa
- A child traveling 5m/s on a sled passes her younger brother. If her average acceleration on the sledding hill is 2m/s square, how fast is she traveling when she passes her older brother 4s later?
- Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positiv
- When two charge producers with different surface materials are rubbed together to create a charge imbalance, how will the electric charge on one of the producers compare to the electric charge on the
- ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements. A person walks along a road 2 miles and rests. Then taking another road, he travels 3.000 mil
- The public is not yet able to purchase hydrogen fuel cell powered cars because engineers have to determine how the cars perform
- A closed, rigid tank fitted with a paddle wheel contains 0.1 kg of air, initially at 300K, 0.1 MPa. The paddle wheel stirs the air for 20 minutes, with the power input varying with time according to W
- The length of each of the bonds between the atoms of a molecule of nitrogen (N2) is 0.142 nm. The mass of a nitrogen atom is 2.32 × 10−11 pg.Determine the moment of inertia of the molecule about an
- Light from a helium-neon laser (λ=633nm) passes through a circular aperture and is observed on a screen 4.90 m behind the aperture. the width of the central maximum is 2.40 cm . part a what is the di
- Over a certain region of space, the electric potential is v = 6x − 2x2y + 7yz2. (a) find the expressions for the x, y, z components of the electric field over this region. (use any variable or symbo
- Sam, whose mass is 71 kg , takes off across level snow on his jet-powered skis. the skis have a thrust of 190 n and a coefficient of kinetic friction on snow of 0.1. unfortunately, the skis run out of
- The compressor of an air conditioner draws an electric current of 15.7 a when it starts up. if the start-up time is 1.55 s long, then how much electric charge passes through the circuit during this pe
- The first artificial satellite to orbit the earth was sputnik i, launched october 4, 1957. the mass of sputnik i was 83.5 kg, and its distances from the center of the earth at apogee and perigee were
- Two charges, one of 2.50μc and the other of -3.50μc, are placed on the x-axis, one at the origin and the other at x = 0.600 m. find the position on the x-axis where the net force on a small charge +
- What is the average horizontal component of force exerted on his feet by the ground during acceleration?
- What is the net work done on the canister by the three forces during the first 4.00 m of displacement?
- What must the charge (sign and magnitude) of a 1.55 g particle be for it to remain balanced against gravity when placed in a downward-directed electric field of magnitude 700 n/c ?
- When excited, elemental sodium gives off a distinctive color that is used often in street lighting. what is the predominant wavelength associated with the emission of atomic sodium? (you may need to c
- You place the spring vertically with one end on the floor. you then drop a book of mass 1.50 kg onto it from a height of 0.600 m above the top of the spring. find the maximum distance the spring will
- A 1.0-mm-diameter, 30-cm-long copper wire carries a 2.0 A current. What is the potential difference between the ends of the wire?
- Which statement regarding the importance of human relations is false? A. People accomplish more in their work and personal lives when practicing good human relations. B. In general, people accomplish
- According to the work of the Curies, which action would increase the radioactivity of polonium? Dissolve the polonium in a solvent. Heat the polonium until it becomes a gas. Expose the polonium sample
- The heat of vaporization of water is 40.66 kj/mol. how much heat is absorbed when 3.48 g of water boils at atmospheric pressure?
- Two conductors having net charges of 15.7 µc and −15.7 µc have a potential difference of 14.8 v. determine the capacitance of the system. answer in units of f.
- Two protons are released from rest, one from location 1 and another from location 2. when these two protons reach location 3, the first proton has a speed that is 3.00 times the speed of the second pr
- What is the maximum kinetic energy k0 of the photoelectrons when light of wavelength 330 nm falls on the same surface?
- A wrecking ball has a mass of 650 kg. It swings from a cable that is 21 m long. The centripetal force on the ball is 56 N. What is the tangential speed of the wrecking ball? 1.3 m/s 1.8 m/s 46 m/s 870
- Peer pressure is when someone is pressured to do something by members of their social group. It can be a very powerful force that encourages someone to do something that he or she is not comfortable d
- I NEED LAB REPORT PLZ READ CAREFULLY AND ASK ME IF YOU HAVE ANY QUESTIONS.
- Fluorine has an atomic number 9. It is in period 2 of the periodic table. The diagram shows the electron dot diagram of a fluorine atom.
- In a Venn diagram, the separate circles contain characteristics unique to each item being compared, and the intersection contains characteristics that are common to both items being compared. Maggie i
- Find the amount of work done in emptying a cylindrical tank completely filled with kerosene. Assume that the radius of the cylindrical tank is 3 m, height is 6 m, and the density of kerosene is 817.15
- What quantity measures the number of complete cycles oscillation makes per second? a. Period b. Amplitude c. Frequency d. Force
- A Batter swings at a baseball. The action force is the bat hitting the ball with a force of 5N. What is the reaction force? A. the hitter swinging the bat B. the pitcher throwing the ball C. the ball
- The charges onto metallic balls are 5.0 and 7.0 call looms respectively they are kept 1.2 m apart what is the force of interaction between the two
- Covalent compounds exchange electrons in a chemical bond. have a low melting point. have weaker bonds than ionic compounds. are formed from one metal and one non metal.
- It does not rain very often in the desert when it does ring the Seas with the desert wildflowers such as those shown below immediately begin the plants bloom make new season complete their whole life
- (02.05 LC) Readers who purchase singer/actress Jennifer Hudson's I Got This: How I Changed My Ways and Lost What Weighed Me Down will most likely read about things that worked for Hudson, but might no
- How does distance between two objects affect their gravitational force? Force increases as distance increases. Force decreases as distance increases. Force decreases as distance decreases. Force i
- Match the serving size with the correct type of food. ANSWER OPTIONS: unlimited, cut in half, size of fingers, palm of hand PROBLEMS: 1. bagel: 2. chicken: 3 .raw carrots: 4. celery: 5. cotta
- A forest fire makes a loud roaring sound. The explosive processes that release energy from the Sun occur at a much higher temperature. Why don’t you hear a roaring sound from the sun?
- In Niels Bohr’s model of the atom, how are electrons configured? like popcorn in a popcorn popper like droplets in a cloud like planets orbiting the sun like raisins in plum pudding
- What is the gravitational force between a car and a truck that are 5m apart , cars mass is 1500kg while trucks is 3800kg? A- 228,000 B- 1.52× 10^-5N. C- 7.60×10^-5N. D- 9.89×10^-5
- Wo bar magnets are hung from metal rods and held in the position shown below. The magnets are released and swing freely. Which diagram best predicts their final position?
- Which of the following is an accuratestatement? A. Step-up voltage transformers have a lower number of turns in the primary than in the secondary winding. B. Step-down voltage transformers have a dif
- A rocket rises vertically, from rest, with an acceleration of 3.0 m/s2 until it runs out of fuel at an altitude of 1100 m. After this point, its acceleration is that of gravity, downward.
- Satelite communication is only possible using A) analog transmission. B) digital transmission. C) sound waves to transmit signal. D) cellular devices such as phones.
- Am unmanned spacecraft leaves for Venus which statements about the spacecrafts journey are true MORE THAN ONE ANSWERA the weight of the spacecraft keeps changing B the mass of the spacecraft keeps cha
- The first law of thermodymics states the ∆E=Q -W. is this also a statement of the principle of conservative of energy?
- Electricity from fusion nuclear energy A. is not possible. B. accounts for less than 15 percent of current world electricity production. C. has been achieved, but is not yet practical. D. has been in
- A 96 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. the flux in this position is measured to be 4.71 × 105 n · m 2 /c. what is the elec
- A finch rides on the back of a galapagos tortoise, which walks at the stately pace of 0.060 m/s. after 1.5 minutes, the finch tires of the tortoise's slow pace, and takes flight in the same direction
- A hawk flies in a horizontal arc of radius 9.9 m at a constant speed of 4.8 m/s. find its centripetal acceleration.
- An electron is traveling through a uniform electric field. the field is constant and given by e⃗ =(2.00×10−11n/c)i^−(1.20×10−11n/c)j^. at t=0 , the electron is at the origin and traveling in
- A package is dropped from a helicopter moving upward at 1.5 m/s. if it takes 16.0 s before the package strikes the ground, how high above the ground was the package when it was released if air resista
- Approximately 80% of the energy used by the body must be dissipated thermally. the mechanisms available to eliminate this energy are radiation, evaporation of sweat, evaporation from the lungs, conduc
- Assume a program requires the execution of 50 × 106fp instructions, 110 × 106int instructions, 80 × 106l/s instructions, and 16 × 106branch instructions. the cpi for each type of instruction is 1,
- At a given instant the football player at a throws a football c with a velocity of 20 m / s in the direction shown. player b is 15 m away from a when a starts to throw the football.
- At the same moment from the top of a building 3.0 × 10 2 m tall, one rock is dropped and one is thrown downward with an initial velocity of 29 m/s. both of them experience negligible air resistance.
- Circuit a has a v = 5v. what v would correspond to 12 the work done by the electric force on a charge traveling in circuit a?
- Data from 50 large u.s. cities show the mean january temperature (degrees fahrenheit), altitude (feet above sea level), and latitude (degrees north of the equator) for 55 cities. here's the correlatio
- Determine the voltage of source v2 in order for a 50a current to be delivered to the 0.5 ohm load resistor.
- A piece of copper (c = 0.385 ) undergoing a temperature change from 150°C to 225°C absorbs 3,500 joules of energy. What is the mass of the piece of copper? Express the answer to the nearest whole nu
- Given 5-ml and 10-ml pipets and 50-ml and 100-ml volumetric flasks, what are the possible concentrations you could make in one dilution of the kcl solution above? what are the maximum and minimum conc
- A piece of copper (c = 0.385 ) undergoing a temperature change from 150°C to 225°C absorbs 3,500 joules of energy.What is the mass of the piece of copper? Express the answer to the nearest whole num
- Can someone help me with question letter B.the question letter b also want the scale and the resultant force.thank youu
- If a pitcher throws a 89 mph fastball, how much time elapses from when the ball leaves the pitcher's hand until the ball reaches the batter?
- If the electric field strength in air exceeds 3.0 ✕ 106 n/c, the air becomes a conductor. using this fact, determine the maximum amount of charge that can be carried by a metal sphere 3.5 m in radiu
- In a local bar, a customer slides an empty beer mug down the counter for a refill. the height of the counter is 1.22 m. the mug slides off the counter and strikes the floor 1.40 m from the base of the
- In this problem, the fact that the length of the string does not change imposes a constraint on relative accelerations of the two blocks. find a relationship between the x component of the acceleratio
- Reparametrize the curve with respect to arc length measured from the point where t = 0 in the direction of increasing t. (enter your answer in terms of s.) r(t) = 2t i + (8 − 3t) j + (7 + 4t) kquest
- Starting from rest at the top, a child slides down the water slide at a swimming pool and enters the water at a final speed of 4.85 m/s. at what final speed would the child enter the water if the wate
- The acceleration of an object as a function of time is given by a(t) = (3.00 m/s2)t, where t is in seconds. if the object has a velocity 1.00 m/s at time t = 1.00 s, what is the displacement of the ob
- The frame is acted upon by three forces as shown below. determine the equivalent forcecouple system at the base o.
- The molecular mass of methyl ethanoate is 75.1 amu . calculate the molecular mass of propanoic acid, an isomer of methyl ethanoate. express your answer with the appropriate units.
- The repetitive waveforms for the current into, and the voltage across a load in fig. p3-9 are shown by linear segments. calculate the average power p into the load
- The time t required for one complete oscillation of a mass m on a spring of force constant k is t=2πmk−−√ find the dimensions k must have for this equation to be dimen-sionally correct. the tim
- Two successive reactions, d → e and e → f, have yields of 10.0% and 67.0%, respectively. what is the overall percent yield for conversion of d to f?
- Water drips from the nozzle of a shower onto the floor 208 cm below. the drops fall at regular (equal) intervals of time, the first drop striking the floor at the instant the fourth drop begins to fal
- What is the change in the electron's kinetic energy, in kiloelectron volts, if it is accelerated over a distance of 0.325 m?
- What is v(s) - v(p), the potentital difference between point p and point s, located at (x,y) = (22.75 cm, -16.5 cm)?
- What phase difference between two otherwise identical traveling waves, moving in the same direction along a stretched string, will result in the combined wave having an amplitude 1.75 times that of th
- (7.) when you add a dhcp reservation for a printer, what two components should you include in the reservation? (choose two answers.)
- You have a tall, open container filled with glycerine. at what depth below the surface of the glycerine is the pressure 2.85 × 103 pa greater than atmospheric pressure? the density of glycerine is 1.
- 1. SR LatchConstruct the circuit below. Draw all of the timing diagrams that depict the relationship of S, R and Q. Determine the truth table of the circuit.S R Qn+10 00 11
- Name a Unique trait about each planet in our solar system (Earth, Jupiter, Mars, Mercury, Neptune, Saturn, Uranus, Venus)
- A 200kg communications satellite is placed into a circular orbit around earth with a radius of 4.23 x 10^7 m (26,300 miles). A) find the gravitational force on the satellite. B) use the equation for
- The infrared thermometer was an invention that was made possible by _____. 1a Canadian physician 2research related to space travel 3 collaboration between doctors and nurses 4the internet
- Which of the following statements is true of patients right to have errors corrected in their medical records
- A car driving on the turnpike accelerates uniformly in the positive x direction from 90.0 ft/s (61.4 mph ) to 121 ft/s (82.5 mph ) in 3.60 s .
- A cat leaps to catch a bird. If the cat's jump was at 60.0° off the ground and its initial velocity was 2.74m/s what is the highest point of its trajectory?
- A charge of 1.5 × 1015 coulombs moves from point A to a lower potential at point B. The electric field is uniform at 2.5 × 10-5 newtons/coulomb and the distance along the field lines between the two
- If the mass of a material is 49 grams and the volume of the material is 10 cm^3, what would the density of the material be?
- A group of students constructs an experiment testing the effects of force on an object. Some of these materials they use are items produced from nonrenewable resources. What is the wisest choice for d
- Four students measured the acceleration of gravity. The accepted value for their location is 9.78 m/s2. Which student's measurement has the largest percent error?
- An iron wire has length 8 m and diameter 0.50 mm. The wire has resistance R. A second wire gas length 2 m and diameter 1mm. What is the resistance of the second wire
- Your uncle works at the railroad freight yard, and he has asked you to watch the yard hands couple 20,000-kg boxcars together. As he leaves to get a sandwich, he tells you, "Whatever you do, don't let
- Two rollerbladers face each other and stand at rest on a flat parking lot. Tracey has a mass of 32 kg, and Jonas has a mass of 45 kg. When they push off against one another, Jonas acquires a speed of
- The man attempts to pull down the tree using the cable and small pulley arrangement shown. The tension in AB is 75 lb and γ = 34 ∘
- A box is on Venus. The box weighs 104 lb and is in free fall. How much force is the box exerting on Venus and in what direction?
- Consider two protons (charge +e), separated by a distance of 2.04 x 10-15 m. the electric force between these protons is equal in magnitude to the gravitational force on an object of what mass near th
- The 4.5-ft concrete post is reinforced with six steel bars, each with a 11 8-in. diameter. knowing that es 5 29 3 106 psi and ec 5 4.2 3 106 psi, determine the normal stresses in the steel and in the
- The reason that you can find your way inside your home without the lights on is due to the fact you have a(n)___ map of your physical surroundings
- A 15-g ball is shot from a spring gun whose spring has a force constant of 600N/m. The spring can be compressed 5 cm. How high can the ball be shot if the gun is aimed vertically? Use kinetic energy o
- A 15-g ball is shot from a spring gun whose spring has a force constant of 600N/m. The spring can be compressed 5 cm. How high can the ball be shot if the gun is aimed vertically? Use kinetic energy o
- A large atom decays and emits a particle. After the reaction is complete, the atom’s mass has changed substantially. What kind of particle has most likely been emitted? alpha particle beta particle
- Your father gained 30 n, which caused his chair to break. What was his new mass? How much force was acting on the chair? How much force was reacting
- If the number of troughs that pass a point in a given time increases, what has increased? A) wavelength B) frequency C) intensity D) amplitude
- A motorcycle has a constant acceleration of 3.08 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its spee
- A hot-air balloon is rising upward with a constant speed of 2.13 m/s. When the balloon is 9.12 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much ti
- An airplane starts from rest and accelerates down a runway uniformly at a rate of 4m/s^2 for 36.4s until it takes off. How far did it travel before lifting off the ground ?
- If the speed of sound in air is 340 m/s, what is. approximately the length of a shortest air column closed at one end that will respond to a tuning fork of frequency 195 hz? answer in units of cm.
- Now the table is tilted at an angle of Î¸ = 75Â° with respect to the vertical. find the magnitude of the new acceleration of block 1.
- I NEED THE LAB REPORT PLZ READ CAREFULLY AND WRITE THE LAB REPORT
- When a clock reads 4.0 seconds a cart's velocity in the positive x direction is 6.0 m/s. when the clock reads 7.0 seconds, the cart's velocity in the positive x direction is 7.0 m/s. what is the magni
- The simulation kept track of the variables and automatically recorded data on object displacement, velocity, and momentum. If the trials were run on a real track with real gliders, using stopwatches a
- A 65.0 kg firefighter climbs 12 flights of stairs that are each 4.0 m high. How much work is required
- Hey! Can someone help with this question? Thx :) What type of energy transformation takes place when carbon is cycled during cellular respiration? A. Chemical energy to chemical energy B. Chemical ene
- If the supplied force f = 150 n, determine the velocity of the 50-kg block a when it has risen 3 m, starting from rest.
- Suppose that 6 j of work is needed to stretch a spring from its natural length of 24 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 29 cm to 31 cm? (round your answer
- Hich object could she include in her story so the character can see his own face and confirm he has really turned into a mouse
- What amount of heat is required to increase the temperature of 75.0 grams of gold from 150°C to 250°C? The specific heat of gold is 0.13 J/g°C.
- In a model of earths layers that is determined by physical properties how might the atmosphere be classified want to be part of the lithosphere or a separate layer explain your answer
- From the beginning of a life to before death, which is the correct order of stages during the life cycle of a koala? A. fertilization --> birth --> joey in pouch --> joey with mother --> joey on its
- What magnitude point charge creates a 10,000 N/C electric field at a distance of 0.250m? how large is the field at 10m?
- Tom pulls a muscle. He has to stop working to get an ice pack. Claudia continues to work and soon finishes her pile. Power is the rate of doing work. It’s calculated by dividing work by time (power
- An 18-year-old runner can complete a 10.0-km course with an average speed of 4.37 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.19 m/s. How much later (in seconds) s
- A hot air balloon of mass 80 kg has a passenger of mass 62 kg. The hot air balloon is at a height of 150m moving at a speed of 18m/s. The total mechanical energy of the balloon and its passenger is __
- Forces: What’s Going to Happen? Take a look at this box and the forces acting on it. box with forces acting on it Will the box move, and if so, how will it move? Answer the following questions. 1.
- The forklift excerts 1500.0 N of force on the boxand moves it 3.00 M forward to the stack. how much work does the forklift do against the force of gravity?
- Suppose that a passenger intent on lunch during his first ride in a hot-air balloon accidently drops an apple over the side during the balloon’s liftoff. At the moment of the apple’s release, the
- An experiment is designed to compare the differences in learning outcomes between learning math from s video game and learning it from traditional classroom activities. the experiment finds no differe
- The wavelength and energy of a wave are inversely proportional. Based on this, which wave listed would have the LOWEST energy. A) wave with wavelength of 600 m B) wave with wavelength of 600 cm C) wav
- A car is traveling 80km/h is 130m behind a truck traveling at 75km/h. How long will it take the car to reach the truck?
- When a car is 2 0 0 meters from its starting position traveling at 30 . m/s., it starts braking and comes to a stop 350 meters from its starting position in 10 . s. Calculate the acceleration.
- A wire etched onto a computer chip carries a current of 0.000000044 A. In 1.8 milliseconds, how many electrons flow past a point on the wire?
- 241Pu decays either by electron decay or by alpha decay. (A given 241Pu nucleus may do either one; is random.) what are the isotopes created as products of these two modes of decay?
- A plastic rod 1.3 m long is rubbed all over with wool, and acquires a charge of -3e-08 coulombs. we choose the center of the rod to be the origin of our coordinate system, with the x-axis extending to
- Astronomers discover a planet orbiting around a star similar to our sun that is 32 light years away. how fast must a rocket ship go if the round trip is to take no longer than 64 years in time for the
- At what distance along the central axis of a uniformly charged plastic disk of radius r = 0.400 m is the magnitude of the electric field equal to 1/5 times the magnitude of the field at the center of
- Calculate the enthalpy change, Î´h, for the process in which 10.9 g of water is converted from liquid at 13.8 âˆ˜c to vapor at 25.0 âˆ˜c . for water, Î´hvap = 44.0 kj/mol at 25.0 âˆ˜c and
- Refrigerant r-22 is compressed adiabatically from a saturated vapor at 20 f to a final pressure of 200 psia. determine the minimum work requirement
- The ducts of an air heating system pass through an unheated area. as a result of heat losses, the temperature of the air in the duct drops by 3 c. if the mass flow rate of air is 90 kg/min, determine
- The mass on a spring is quadrupled. how will this affect the frequency at which the spring will oscillate?
- The specific heat of a certain type of cooking oil is 1.75 j/(gÂ·Â°c). how much heat energy is needed to raise the temperature of 2.94 kg of this oil from 23 Â°c to 191 Â°c?
- Two charges are located in the xâ€“y plane. if q1 = -3.50 nc and is located at x = 0.00 m, y = 0.800 m and the second charge has magnitude of q2 = 5.00 nc and is located at x = 1.50 m, y = 0.800
- What is the wavelength of an x-ray photon with energy 7.0 kev (7000 ev)? (1 ev = 1.60 Ã— 10âˆ’19 joule.)?
- Music played in front of the bandshell is clear and audible for a surprising distance in front of the bandshell. Why is this the case? Explain
- Measuring the temperature of very cold substances can be challenging. Here is one way to measure the temperature of liquid nitrogen. A 50-g flake of aluminum is submerged in liquid nitrogen and left i
- The sound strikes the cantina walls and bounces off at the same angle as it struck in a process known as _____.
- Terminal velocity is the velocity of _______ A. a falling object when it starts to break apart B. an accelerating object when it hits the ground C. an object falling in a vacuum (an environment wit
- Why is history open to ongoing and changing interpretations?Changing values limit interpretation.New evidence is not available.Primary sources are determined to be unreliable.Revisionists are overrule
- 500-g weight, a spring scale, dynamic cart, a digital timer, a pulley, a thermometer, and a graduated cylinder. Which set of equipment would best utilize Newton's Second Law to find the mass of the dy
- 4. Which of the following is a way that some animals bodies adapt to living in extremely cold climates
- The ball has joules of potential energy at point B. At position A all of the energy changes to kinetic energy. The velocity of the ball at position A is meters/seconds. Assume theres no air resistance
- The modern cars, air condition, cutting tools, drill machine, laptop and aeroplane made of what material ?
- Hello everyone Can anyone please help me in answering these questions as soon as possible Thank you
- An oil fired steam generator is connected to a steam engine which produces 50kw of power when using oil of energy content 47mj/kg at a rate of 19.9kg/h.steam temperature is500c and cooling water tempe
- A 4-kg object falls vertically a distance of 5m. Its potential energy has changed by approximately how much?
- Metal plates of mass 0.1 kg are fired into an iron plate of large mass, m, and specific heat capacity, c, at a temperature of 15 degrees. 25% of the kinetic energy of the pellets is converted to therm
- A hose directs a horizontal jet of water, moving with a velocity of 20m/s, on to a vertical wall. The cross-sectional area of the jet is 5 x 10-4m2. If the density of water is 1000kgm-3, calculate the
- Explain what the two teams of astronomers found in the 1990s. What question did their discovery create?
- A 200 horsepower diesel engine’s BSFC is listed as; 0.5 lbs/hp-hour at full load (200 hp) 0.6 lbs/hp-hour at 75% load (150 hp) 0.7 lbs/hp-hour at 50% load (100 hp) 0.8 lbs/hp-hour at 25% load (5
- What will happen to plant height if the amount of available light is reduced due to global dimming? Which type of investigation would most likely be conducted to answer the following question?
- Based on the diagram of a ball rolling down hill, what statement is true? The ball in box C has less kinetic energy than the ball in box B. B) The ball in box A has more kinetic energy than the ball
- Mike and Joe take turns pitching a baseball, and Drew catches it. Mike can throw the ball harder than Joe can. Which of the following statements is true? A. The ball requires more force to stop when J
- Newton was outrwged when in 1684 German mathematician Wilhelm Leibniz published a calculus book find out why, describe how the issue is generally result today
- How close to −9 do we have to take x so that 1 (x + 9)6 > 1,000,000 is satisfied? (give the largest possible value.) |x − (−9)| < -9.1?
- Suppose that 2 j of work are needed to stretch a spring from its natural length of 30 cm to a length of 42 cm. how far (in cm) beyond its natural length will a force of 30 n keep this spring stretched
- When mass m is tied to the bottom of a long, thin wire suspended from the ceiling, the wire's second-harmonic frequency is 200 hz . adding an additional 1.9 kg to the hanging mass increases the second
- A pattern for 1 uniform uses 12 yards of material. Boleslaw wants to know how many yards are needed for 8 uniforms. Chantal wants to know how many yards she will need to make 15 uniforms. Drag an expr
- Which two factors does the power of a machine depend on? work and distance force and distance work and time time and distance
- A uniform rod XY of weight 10.0N is freely hinged to a wall at X. It is held horizontal by a force F acting from Y at an angle 30° to the horizontal, as shown. What is the value of F? A- 5.0 N B- 8.
- A driver brakes a 1420 kg car moving at 64.8 km/h [W] . The car slows down and comes to a stop after moving 729 m [W]. What is the force of friction acting on the car while it is slowing down?
- lab report
- Describe how the amount of heat released or absorbed related to specific heat capacity and amount of it? A) Amount of heat absorbed or released is doubled if quantity is doubled. If a different substa
- A 8.8×10−4 V/m electric field creates a 4.4×1017 electrons/s current in a 1.7-mm-diameter aluminum wire.
- Conduct informational research on the topic. Summarize the results of this literature search and include references.Can you find experiments that have been conducted that have an experimental design s
- If the current in each wire is the same, which wire produces the strongest magnetic field? A.) a wire that is 1 mm thick and not coiled B.) a wire that is 2 mm thick and not coiled C.) a 1-mm-thick
- Suppose that the moment of inertia of a skater with arms out and one leg extended is 3.5 kg⋅m2 and for arms and legs in is 0.90 kg⋅m2 . If she starts out spinning at 5.8 rev/s , what is her angula
- A noisy resistor produces a voltage Vn(t) at t=t1, the noise level X=Vn(t) is known to be Gaussian RV with pdf fx=1/(2pid2)exp(-1/2(x/d)2) compute and plot probability that abs(X)>kAlpha for k=1,2
- How frequently should one apply sunscreen while swimming on a sunny day. A. Once since water absorbs UV rays B. More often since water reflects UV rays C. Once since water reflects sun's radiation
- lab report
- The energy of microwaves is less than the energy of ultraviolet light. Which comparison of the energies of electromagnetic waves is correct? Gamma rays have higher energy than microwaves because gamma
- A body A of mass 1.5kg, travelling along the positive x-axis with speed 4.5m/s, collides with another body B of mass 3.2kg which, initially, is at rest. Because of the collision, A is deflected and m
- A woman walks due west on the deck of a ship at 3 mi/h. the ship is moving north at a speed of 23 mi/h. find the speed and direction of the woman relative to the surface of the water. (round your answ
- The rigid beam is supported by a pin at a and wires bd and ce. if the load p on the beam causes the end c to be displaced 15 mm downward, determine the normal strain developed in wires bd and ce.
- Two vectors are given by a overscript right-arrow endscripts equals 6.1 i overscript Ì endscripts plus 8.7 j overscript Ì endscripts and b overscript right-arrow endscripts equals 6.3 i overscript
- What should be the length l of the clapper rod for the bell to ring silently-that is, for the period of oscillation for the bell to equal that for the clapper? express your answer using two significan
- 10. A body A of mass 1.5kg, travelling along the positive x-axis with speed 4.5m/s, collides with another body B of mass 3.2kg which, initially, is at rest. Because of the collision, A is deflected an
- Write an expression for a harmonic wave that has an amplitude of 18 cm, a wavelength of 2.0 m, an d propagates to t he left a t 15 m/s.
- 1. Go toi. HYPERLINK "http://science-edu.larc.nasa.gov/energy_budget/" http://science-edu.larc.nasa.gov/energy_budget/ and review. Focus on the Earth’s Energy Budget diagram.ii. Please conduct infor
- Which part of the war picks up vibrations from the atmosphere? A. Eardrum B. Bones of the middle ear C. Hair cells D. Nerve from the inner ear
- A body A of mass 1.5kg, travelling along the positive x-axis with speed 4.5m/s, collides with another body B of mass 3.2kg which, initially, is at rest. Because of the collision, A is deflected and mo
- Name and describe an alternative renewable energy source in a complete sentence. Hint-Kenetic energy is the energy of motion,and potential energy is related to position.
- To get an spaceship into orbit, it has to move about as fast as the speed of sound about as fast as the speed of light about 18,000 miles per hour there is no minimum speed for orbital motion
- A platform is executing simple harmonic motion in a vertical direction with an amplitude of 5 cm and a frequency of 10/π vibrations per second. a block is placed on the platform at the lowest point o
- A steady normal shock wave occurs in an air flow at a point where the velocity is 680 m/s, the static pressure is 100 kpa, and the static temperature is 50°c. calculate the velocity, and static press
- A truck is traveling at a constant speed of 67.1 miles per hour when it passes a sports car which is at rest. 1.00 s later, the sports car begins motion from rest and travels with uniform acceleration
- Determine the design tensile strength (φpn) for a tension member composed of a pl5 × 8 with holes punched for 3 in.
- If 45.1 m of nichrome wire is to have a resistance of 11.2 ω at 20.0°c, what diameter wire should be used?
- If your kinetic energy is different from your work input (either greater or less) throughly explain what caused this
- Seven lb of propane in a piston-cylinder assembly, initially at p1=200 lbf/in.2 and t1=200℉ , undergoes a constant-pressure process to a final state. the work for the process is -88.84 btu. at the f
- The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas beh
- Two sinusoidal waves of the same frequency travel in the same direction along a string. if ym1 = 3.8 cm, ym2 = 5.6 cm, φ1 = 0, and φ2 = π/2 rad, what is the amplitude of the resultant wave?
- A college student exerts 100N of force to lift his laundry basket the weighs 75N. at what rate is the basket accelerated upwards?
- Give examples of the one element from the alkaline earth metal group and one from the noble gases group. Include each element atomic number, atomic mass number of neutrons of valence electron number o
- A dam is a structure built across a river to hold back the river's water. The flow of water through a dam is controlled by gates. When the gates are closed, water is held at a greater height than it w
- Measuring the temperature of very cold substances can be challenging. Here is one way to measure the temperature of liquid nitrogen. A 50-g flake of aluminum is submerged in liquid nitrogen and left i
- A slit has a width of w1 = 4.0 × 10-6 m. when light with a wavelength of λ1 = 648 nm passes through this slit, the width of the central bright fringe on a flat observation screen has a certain value
- If each of the posts has an unloaded length of 1 m and a cross-sectional area of 650 mm2 , and the spring has a stiffness of k = 4 mn/m and an unstretched length of 1.02 m , determine the vertical dis
- The electric field everywhere on the surface of a charged sphere of radius 0.293 m has a magnitude of 510 n/c and points radially outward from the center of the sphere. what is the net charge on the s
- A 50-g flake of aluminum is submerged in liquid nitrogen and left immersed until it is in thermal equilibrium. The flake is then removed and placed in a well-insulated container with 493 ml of water a
- When you lift a bowling ball with a force of 87 n , the ball accelerates upward with an acceleration a. if you lift with a force of 98 n , the ball's acceleration is 2a?
- CAN SOMEONE PLZ HELP ME OUT CAUSE IM CONFUSED Match the phrase with the correct benefit of stretching. ANSWER OPTIONS: 1. Decreasing joint stiffness, 2. Improved ability to relax, 3. Improved posture
- Which phrase best describes matter? A. Matter is made of atoms and is too small to see. B. Matter is solid and heavy. C. Matter has mass and takes up space. D. Matter has volume and takes up space.
- Isabel’s first car had a manual stick shift. After many years of driving an automatic car, she needs to use her sister’s car, which also has a stick shift. Isabel takes a few minutes to get used t
- Can someone please help me thank you so much. A 200-kg boulder has 39,200 joules of gravitational potential energy. What height is it at?
- 50 PTS!!! Consider the psychological theories that you have learned about so far. Select and write about one theory that you personally believe is the most effective or significant. Explain why you th
- If an object is thrown in an upward direction from the top of a building 1.6 x 102 ft. high at an initial velocity of 21.82 mi/h, what is its final velocity when it hits the ground?
- A pitcher throws a 0.5 kg ball of clay at 6 kg block of wood. the clay sticks to the wood on impact, and their joint velocity afterward is 3 m/s. what was the original speed of clay?
- A car is moving east along a straight, level road at a constant velocity. Which forces form an action/reaction force pair?
- Scientist and engineers may recommend carpets and draperies for the walls of concert hall to reduce excess A. Echolocation B.reverberation C.frequency D amplitudes
- Lab Report Please read carefully and do your best. Thank you.
- If you mix equal amounts of cyan pigments and magenta pigments on a sheet of white paper, what color will you see on the paper? A. Red B. Blue C. Black D. Yellow E. Cyan F. Magenta
- In Robin’s linguistics class, the teacher and students are discussing how the word “nice” once meant “foolish” and how “awful” used to mean “full of awe.” They are most likely discus
- According to Binet, mental age relates to chronological age because ___________. A. they are the same thing B. mental age involves calculating the chronological age at which a person functions C. chro
- The list shows the results of six athletes competing in the long jump, which has a target distance of 20 feet. 12 feet, 11 feet, 13 feet, 10 feet, 20 feet, 12 feet
- A paper-filled capacitor is charged to a potential difference of 2.8 V and then disconnected from the charging circuit. The dielectric constant of the paper is 3.7. Keeping the plates insulated, the p
- Explain why organisms are more likely to be well preserved in mud than in sand? Justify your response in two or more complete sentences.
- Venn diagrams are used for comparing and contrasting different topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show
- Andy has two strong magnetic marbles of equal size. What will happen when he puts the two marbles about 2 centimeters apart?
- You apply 100.0 N of force to a machine. The machine applies 20.0 N of force to the load. What is the mechanical advantage of the machine?
- What does a velocity vs time graph look like for constant velocity if the speed is 2m/s. And the time is not given.
- A smooth hemispherical bowl of radius r is fixed with its rim uppermost and horizontal. A smooth uniform rod of length 2l (l>r) rest with one end inside the bowl and leaning on the rim. Find the lengt
- An igneous rock interacts with the different layers of Earth and is subjected to heat and pressure over a long period of time. However, it does not melt. What is most likely formed as a result of thes
- An ice skater starts with a belocity of 2.25 m/s in a 50 degree dorection. After 8.33 s, she is moving 4.65 m/s in a 120 degree direction. What is the x component of her acceleration?
- Which statement is true? (2 points) Geothermal power plants use the renewable resource of heat from within the Earth to generate electricity. Hydroelectric energy uses the energy from the sun, which
- Sound waves are mechanical waves in which the particles in the medium vibrate in a direction parallel to the direction of energy transport. Identify another name for this type of wave motion/10763632/
- 2. You do work on something when you lift if against gravity. Explain how work relates to gravitational potential energy using at least two complete content related sentences. If the lifted object is
- Which best describes the physical and chemical digestion of food? Physical and chemical digestion occur in the mouth; only chemical digestion occurs in the small intestine. Physical and chemicall dige
- Cereal plants gain chemical potential energy as they grow. Which form of energy is converted to create the chemical potential energy?
- A spaceship of mass 2.10×10^6 kg is cruising at a speed of 6.00×10^6 m/s when the antimatter reactor fails, blowing the ship intothree pieces. One section, having a mass of 4.80×10^5 kg, is blown s
- If an object that enters the Earth’s atmosphere does not completely disintegrate, its remains can impact the Earth true or flase
- A measure of the amount of light received on Earth is a star's ____. a. apparent magnitude c. position in space b. absolute magnitude d. size
- A point charge of 4.0 u c is placed at a distance of 0.10 m from a hard rubber rod of an electric field of 1.0 × 10^3 n/c what is the electric potential energy of the point charge
- Noe is studying Wave A and Wave B. Wave A is rated at 100 dB, and Wave B is rated at 90 dB. Which statement can be made about the waves? Wave A has fewer decibels than Wave B. Wave A is louder than Wa
- A spaceship orbiting earth flies to the moon. How is the gravitational force pulling on the spaceship related to the distance that the spaceship is from the earth? Question 25 options: The gravitation
- A person looks at a gem using a converging lens with a focal length of 11.9 cm. The lens forms a virtual image 25.3 cm from the lens. Determine the magnification.
- Blocks of 1.0, 2.0, and 3.0 kg are lined up on a frictionless table, as shown in (Figure 1), with a 12-N force applied to the leftmost block.:?What’s the magnitude of the force that the rightmost bl
- A Geiger counter is like an electroscope that discharges whenever ions formed by a radioactive particle produce a conducting path. A typical Geiger counter consists of a thin conducting wire of radius
- In the simple AC circuit shown, R = 70.0 ohms and v = Vmax sin(wt)a) if Vr = 0.250Vmax for the frst time at t = 0.0100 s, what is the angular frequency of the source?b) what is the driving frequency o
- The pressure on a point in a liquid is directly proportional to the distance from the surface to the point. in a certain liquid, the pressure at a depth of 4 m is 60 kg per m^2. find rhe pressure at a
- 5.3 × 1012 kg satellite is 1,800 m from another satellite that has a mass of 3.5 × 108 kg. What is the gravitational force between the satellites? 3.82 × 104 N 6.87 × 107 N 5.72 × 1014 N 1.03 ×
- If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? Check all that apply.
- A cylindrical container with a cross-sectional area of 61.2 cm2 holds a fluid of density 856 kg/m3. At the bottom of the container the pressure is 123 kPa. Assume Pat = 101 kPa
- A large jet flying overhead is low enough so that a man on the ground can hear its engines. The man sees the jet before he hears the engines because
- A farm tractor tows a 3300-kg trailer up a 14° incline with a steady speed of 2.8 m/s. What force does the tractor exert on the trailer? (Ignore friction.)
- Suppose you read the following description in the want ads for a used car: mint condition, 55,000 miles on the odometer, model XJ4500, willing to accept reasonable offer. Describe the usefulness of ea
- A 2 cm object is 10 cm from a convex lens that has a focal length of 4.4 cm. The image is 8 cm from the lens. The height of the image, to the tenths place, is _____
- At 3:15 one afternoon, the temperature over the land reaches its highest value for the day — about 89°F. The temperature over the adjacent water is about 72°F. What would the expected weather cond
- A person is standing outside on a windy day and throws a 0.5 kg ball up at an angle Î¸ and speed Ï…0 = 10 m/s. the wind produces a force on the ball equal to âˆ’2i n. what should Î¸ be so t
- A rock dropped into a pond produces a wave that takes 14.4 s to reach the opposite shore, 37.2 m away. the distance between consecutive crests of the wave is 3.8 m. what is the frequency of the wave?
- As the captain of the scientific team sent to planet physics, one of your tasks is to measure g. you have a long, thin wire labeled 1.04 g/m and a 1.27 kg weight. you have your accurate space cadet ch
- A 4.5-v battery is connected to a bulb whose resistance is 1.6 Ï‰ . part a how many electrons leave the battery per minute?
- Someone uses a system of pulleys to lift a heavy load. The person pulls 5 meters of rope and the load only raises 1 meter. How does the energy required to lift the load with pulleys compare to the ene
- Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. the spring constant of spring 1 is 175 n/m. the motion of the object on spring 1 has twic
- A positive charge of 6.0 × 10-4 C is in an electric field that exerts a force of 4.5 × 10-4 N on it. What is the strength of the electric field?
- The yield strength for an alloy that has an average grain diameter of 1.6 Ã— 10-2 mm is 320 mpa. at a grain diameter 3.9 Ã— 10-3 mm, the yield strength increases to 480 mpa. at what grain diamet
- Two ends of an inextensible string of length 12m are attached to points Aand B 1.2m apart,in the same horizontal plane.a mass 20kg is suspended from the middle point C of the string and the system is
- Two ends of an inextensible string of length 12m are attached to points Aand B 1.2m apart,in the same horizontal plane.a mass 20kg is suspended from the middle point C of the string and the system is
- Daniel observed and compared some stars at night and recorded his observations in a chart. Daniel later discovered that star X is farther away from Earth than the other stars he observed, and star Z i
- This chart shows the volumes of four different objects. If the objects all have the same mass, which object is the most dense?
- Which statement offers an explanation for why some parts of John Dalton’s atomic theory were proven to be false?
- Fill in the blanks below: The flow of electricty is similar to the movement of water through a pipe. The movement is the __________, the force of the current is the __________, and the rate of the cur
- A 18.0 Ω lightbulb is connected to a 18.0 V battery. (a) What current flows through the bulb? A (b) What is the power of the bulb? W
- Please help me with this. Please show work as well. Thanks :) An empty graduated cylinder has a mass of 75grams. Then filled with 50milliliters of liquid, it has a mass of 115grams. Calculate the dens
- An electron is confined to an infinite 1-dimensional well of width L = 1.5 nm. At t = 0 it is in a superposition of the ground state and second excited state: Ψ(x,t=0) = aΨ1 + bΨ3 , where Ψ1 and
- Two charged parallel plates are 0.25 meters away from each other. The field between the plates is 600 . What is the electric potential difference?
- A force of 230 N applied on a hydraulic lift raises an automobile weighing 6500 N. If the applied force is exerted on a 7.0 m^2 piston, what is the area of the piston beneath the automobile? a. 2.0 x
- Earth's atmosphere traps energy from the sun which is a direct result of the trapping of energy by Earth's atmosphere?
- The average mass of a rhinoceros calf is 45 kg. What is its weight in newtons? Round your answer to the nearest whole number. A. 5N B. 45N C.250 N D. 441 N I will mark brainliest for whoever gets this
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- A diffraction grating separates different wavelengths of light from one another using diffraction through many small openings. Which principle of diffraction does this separation of light depend on? A
- Which of the following describes the importance of cyanobacteria to early Earth atmosphere formation? A.) Cyanobacteria released oxygen into the air, creating a protective ozone layer B.) Cyanobacter
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- Mai jogs 800 m north and then turns and jogs 200 m back to the south. What is her velocity if it takes her 400 seconds? A. 2.5 m/s north B. 2.5 m/s south C. 1.5 m/s south D. 1.5 m/s north
- A rocket in orbit just above the atmosphere is moving in uniform circular motion. The radius of the circle in which it moves is 6.381 × 106 m, and its centripetal acceleration is 9.8 m/s2 . What is t
- A point charge of 6.0 C is placed 5.0 mm from a rod that has an electric field of 2.4 x 10^3 N/C the electric potential energy of the point charge (rounded to two significant figures) is
- How much time does it take a power drill accelerating at 64.3 rad/s2 to achieve 1500. rotations per minute(RPM)?
- A 9.0 cm object is 3.0 cm from a lens, which has a focal length of –12.0 cm. What is the distance of the image from the lens? cm What is the height of the image? cm What type of lens created this im
- Nina is researching a biome that has warm, humid summers; cold, long, and snowy winters; and at least four to six frost-free months each year. Which region is Nina studying? desert coniferous forest t
- A sound wave with a frequency of 100.0 Hz travels in water with a speed of 1,500 m/s and then travels in air with a speed of 340 m/s approximately how many times larger is the wavelength in water than
- Which statement best describes the thermal properties of wool? A. Wool is an ideal thermal insulator because it completely resists the transfer of heat. B. Wool is an excellent thermal conductor beca
- Which sentence best describes frustration? A. When you can't achieve your goal because you had a poor plan B. When you achieve your goals despite certain events C. When you can't achieve your goal du
- A ____ is a region so dense that nothing, including light, can escape its gravity field. a. supernova c. black hole b. white dwarf d. supergiant Please select the best answer from the choices provide
- Please read carefully. I need Lab Report and Answers of questions. Thank you.
- Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of bacteria. The researchers grew one type of bacteria in twenty-four identical covered pet
- According to Einstein’s theory, how does an increase in the number of photons affect a beam of light? The wavelength of the beam of light increases. The speed of the beam of light increases. The bri
- A force of 58 newtons is applied to a crate at an angle of 32° with the horizontal. What is the value of force acting in the y–direction? 15.7 newtons 30.7 newtons 39.5 newtons 49.2 newtons
- The part of the flower responsible for producing pollen (sperm) is the _______. A. stigma B. anther C. style D. filament
- A ball is left at an angle of 25 degrees to the horizontal from a plane at a height of 10 m with a velocity of 12m/s at what distance will the ball land on the horizontal surface at zero height?
- A body of mass 5kg falls from height of 10m above the ground what kinetic energy of the body before it strike the ground
- If a moving car speeds up until it is going twice as fast,how much kinetic energy does it have compared with its initial kinetic energy?
- Which pair of vectors could be added together to form the vector shown? A.) 6 units left, 7 units down B.) 7 units right, 6 units down C.) 7 units left, 6 units down D.) 6 units right, 7 units down
- The appearance of color is a result of the absorption and reflection of certain wavelengths of light. A shirt appears a certain color because it reflects that color of light. On the other hand, a shir
- A solid object heated to 120°C is placed inside a container of water at 33°C. What is the BEST explanation of the resulting change in temperature? A) The temperature of both the water and solid will
- The mass of a golf ball is 45.9 g . if it leaves the tee with a speed of 65.0 m/s , what is its corresponding wavelength?
- The young's modulus of steel is 2.0 x 1011 n/m2 and the tensile strength is 8.0 x 108 n/m2 . the density of steel is 7.9 x 103 kg/m3 . (a) what is the maximum length of a steel cable that can hang ver
- What is the strength of the electric field 2.4 cm from a small plastic bead that has been charged to -9.0 nc ?
- Derek’s organization uses an emerging technology that uses specialized software to place an image on an object, add dimensions to the image, and create an optical illusion of a moving object. Which
- Which best describes what is occurring when a door is almost closed and rays of light fan out from the small opening?
- A golf course sprinkler system discharges water from a horizontal pipe at the rate of 7300 cm3/s. At one point in the pipe, where the radius is 4.84 cm, the water's absolute pressure is 2.8 105 Pa. A
- Stion 1A body with initial velocity 8.0 m/s moves along a straight line with constant accelerationand travels 640 m in 40 s. For the 40 s interval, find (a) the average velocity, (b) the finalvelocity
- A method that uses a mathematical equation and the half-life of decay to determine the exact date of a fossil is known as _______. a. relative dating c. absolute dating b. comparative dating d. half-l
- Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same length. Which of the two bulbs will have thicker filament?
- A car travelling at 50m/h on a horizontal highway (a) if the coefficient of static friction between road and tyres on a rainy day is 0.100, what is the minimum distance in which the car will stop?
- Sam and Sally are both running the mile at the region track meet. One mile equals four laps around the oval track. They are neck and neck during most of the race, but at the half-mile mark Sam starts
- Sarah and her friends the swim team are playing on the high dive. One of Sarah's friends throws her back pack, containing her swim supplies, into the pool from the high dive platform. The back pack we
- Photosynthesis is a process in which plants prepare food using carbon dioxide, chlorophyll, and water in the presence of sunlight. During photosynthesis, energy is transformed into energy.
- The theory of plate tectonics describes this process as a gradual movement of the tectonic plates across the Earth’s lithosphere.
- How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution react with excess aluminum metal? Show all of the work needed to solve th
- Tectonic plates are large segments of the earth crust that move slowly. Suppose one such plate has an average speed of 4.5cm per year. What distance does it move in 100 seconds at the speed? What is i
- Based on the diagram below, which of the waves listed below has the shortest wavelength? A. radio waves B. x-ray waves C. infrared waves D. ultraviolet waves
- You devise a wind-up car powered by a spring for trips to the grocery store. The car has an inertia of 520 kg and is 4.1 m long. It should be able to accelerate from rest to 20 m/s at least 50 times b
- A horse does 910 J of work in 380 seconds while pulling a wagon. What is the power output of the horse? Round your answer to two significant figures. The power output of the horse is W.
- A forklift raises a 1020 N crate 3.50 m up to a shelf l. How much work is done by the forklift on the crate? The forklift does J work on the crate.
- Design a hydraulic system to safely lift a 200kg mass through a vertical height of 1 meter in a time of 2 seconds. Assume a working pressure of 10 MPa. What you should calculate: 1. Determine the dime
- Eddie and Val observed the picture of an athlete running in a race. Eddie stated the picture shows potential energy being transformed to kinetic energy. Val stated that it shows chemical energy being
- An electric field of magnitude E=360.0 N/C at a distance r=5.0 cn from the center of a charged conducting sphere is directed away from the sphere. the sphere has a radius r=3.0 cm.
- Legislation covering the maximum dosage limits for persons who are subject to radiation at work are specified in all countries’ legislation. Using information from the Learning Packages and other so
- Which has a higher acceleration: a 10 kg object acted upon with a net force of 20 N or an 18 kg object acted on by a net force of 30 N
- A vehicle ___________ occurs when the driver begins to back up and is unaware that a person is behind the vehicle.
- A golf ball of mass 50 g is at rest on a tee. Then a golf club strikes it, providing the ball with an initial speed of . The club and ball were in contact for What is the average force that the club e
- Physics Lab report. Please this carefully and do your best.
- A 0.500 kg object is thrown vertically upward with an average applied force of 8.20 N by a student. The force is applied through a displacement of 1.50 m a. What is the average net force acting on the
- A 4.0 x 10^4 N Truck moving west at a velocity of 8.0 m/s collides with a 3.0 x 10^4 N truck heading south at a velocity of 5.0 m/s. If these two vehicles lock together upon impact, what is their velo
- Assuming negligible friction, what spring constant force constant would be needed by the sprin gin a b-b gun to fire a 10-g pellet
- A traveler pulls on a suitcase strap at an angle 36° above the horizontal. if 642 j of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the s
- Find (a)the magnitude and (b) direction of the weakest electric field that can bring the proton uniformly to rest over a distance of 3.10 cm .
- Radio wave radiation falls in the wavelength region of 10.0 to 1000 meters. what is the wavelength of radio wave radiation that has an energy of 2.23×10-30 kj/photon? wavelength = m
- Tarzan, in one tree, sights jane in another tree. he grabs the end of a vine with length 28 m that makes an angle of 46° with the vertical, steps off his tree limb, and swings down and then up to jan
- The turntable of a record player has an angular velocity of 6.1 rad/s when it is turned off. the turntable comes to rest 4.4 s after being turned off. through how many radians does the turntable rotat
- A fire ant, searching for hot sauce in a picnic area, goes through three displacements along level ground: d1 for 0.40m southwest (that is, at 45° from directly south and from west), d2 for 0.50m due
- What will a spring scale read for the weight of a 50-kg woman in an elevator that moves upward with constant speed 5.0 m/s?
- You are working out on a rowing machine. each time you pull the rowing bar (which simulates the oars) toward you, it moves a distance of 1.1 m in a time of 1.3 s. the readout on the display indicates
- The region where warm and cold air masses meet is called a a. pocket. c. front. b. cloud. d. nimbus.
- Gloria wants to search for a website on home decor. What can Gloria type on her web browsers address line
- PLEASE HELP & HURRY!!! You have decided to do a science fair project involvong plants. which of the following represents a well- stated hypothesis? A. if I vary the amount of sunlight then the plant w
- A 2.5 x 10^5 is used for 26.4 s to pull a boat straight toward shore how far does the boat move toward shore if a force of 4.2 x 10^4 is applied by the motor
- Explain these science review terms: Doppler Effect vs Doppler Radar ie Doppler Shift Mechanical Waves Particle nature of Light Wave nature of Light Electromagnetism Spectrum waves Compare/contra
- A and B are two points 50 meters apart on a straight path inclined at an angle α to the horizontal, where sin α = 0.05, with A above the level of B. A block of mass 16 kg is pulled down the path fro
- What is a common theme in H.G. Dell's works "The Island of Dr. Korean and The Invisible Man?"A.) danger of scientific advancement with out ethics.B.) danger of class different between upper and lower
- A stuffed toy with a mass of 0.900 kilograms sits on the edge of a bed at a height of 0.830 if the toy falls off the bed what will it mechanical energy be at a height of 0.500 meters
- The gravitational force between the sun mass is 1.99 times 10 to 30 power kg and mercury mass 3.30 times 10 to 22rd power kg is 8.99 times 10 to 21st powerN how far is mercury from the sun
- If the maximum force that any member can support is 8 kn in tension and 6 kn in compression, determine the maximum force p that can be supported at joint d. solution method of joints: in this case, th
- In terms of r and c , determine the time required for the charge on the capacitor to rise to 50% of its final value.
- The tungsten filament of a light bulb has a resistance of 0.09 ω. if the filament is 16 cm long, what is its diameter?
- What is the strength of the electric field 2.4 cm from a small plastic bead that has been charged to -9.0 nc ?
- In addition to the distance from a charged particle, what other factor determines the magnitude of the electric potential?
- A common theory about influenza is that it is a disease occurring primarily in cold weather. Doctors report incidences of illness such as influenza to the Centers for Disease Control (CDC). The graph
- Pria's radio produces 80 useful energy units for every 100 units of electricity used. The efficiency of the radio is _____. 0.80 percent 20 percent 80 percent 100 percent
- Kepler and Newton studied the movement of planets. Kepler studied the speed of the planets while Newton studied the forces that kept the planets in place. Which of these statements best explains why t
- Ever tried to stop a 10 pound(68 kg) cannonball fired towards you at 30 mph(48 km/hr.)? no, probably not. but you may have tried to brace yourself in a car collision. how are the two situations simila
- The ISS orbits the earth at an altitude of 400km (400000m). what is the earths gravitational field at that height?
- Bertha has a mass of 50kg. abdul has a mass of 75kg. abdul and bertha stand 20m apart on the dance floor. they feel a (gravitational) attraction to each other. what is the magnitude of the force of at
- When a person does work on an object, the object gains energy. As a bicycle rider rides from the bottom of a hill up a hill, the energy from the work being can become which combination of types of ene
- HELP QUICK ! How would farmers help their neighbors keep their homes when they could not repay their bank loans? a. size b. charge c. temperature d. motion
- An 85,000 kg stunt plane performs a loop-the-loop, flying in a 260-m-diameter vertical circle. at the point where the plane is flying straight down, its speed is 55 m/s and it is speeding up at a rate
- Which one of the following scenarios accurately describes a condition in which resonance can occur? A. A column of air has a height equal to 1⁄8 of the wavelength of the sound waves produced by a tu
- If he(g) has an average kinetic energy of 4990 j/mol under certain conditions, what is the root mean square speed of cl2(g) molecules under the same conditions?
- If the resistance in the coil is 5.0 Ï, what is the magnitude of the induced current in the coil while the field is changing?
- Two identical capacitors are connected in parallel to an ac generator that has a frequency of 690 hz and produces a voltage of 24 v. the current in the circuit is 0.2 a. what is the capacitance of eac
- What is the electric potential vtot at the center of the square? make the usual assumption that the potential tends to zero far away from a charge what would be the kinetic energy k2q of charge 2q at
- What is the smallest capacitor needed in a computer power supply in order to produce at least 4.50 v for 0.74 seconds after the power goes off? assume that the resistance of all the components of the
- What would happen to the magnetic field inside this solenoid if you doubled the number of turns while simultaneously stretching the solenoid to twice the original length? assume the voltage applied wa
- When the starter motor on a car is engaged, there is a 260 a current in the wires between the battery and the motor. suppose the wires are made of copper and have a total length of 1.4 m ?
- You are learning about energy transformations in science class. Mel and Sam's built this set-up to see if light energy could be transformed into _________ energy.
- Read the excerpt from Bruno’s summary of Gulliver's Travels.When Gulliver tours the academy, he sees a man attempting to get sunbeams out of cucumbers and a man trying to turn ice into gunpowder.Thi
- HELP PLEASE <3 According to Newton's Third Law, what is the equal and opposite force to the downward force of gravity pulling on a man standing on the beach?
- A sound wave is passing by a student 250 times every second. What is the frequency of the sound wave? 25 s 1 second 250 Hz 1/250 Hz
- What is the concentration of H+ ions at a pH = 2? mol/L What is the concentration of OH– ions at a pH = 2? mol/L What is the ratio of H+ ions to OH– ions at a pH = 2? : 1
- A region in a ferromagnetic material that has a large number of atoms with aligned magnetic fields is called a ____. A) magnetic domain B) magnetosphere C) magnetic declination D) ferromagnetic regi
- A box of weight 74 N is sliding on a horizontal surface at a constant velocity due to an external force of magnitude 4.8 N. A normal force (n) and a friction force (f) also act on the box. After the m
- Consider a fish 1.2 m below the surface of a quiet lake. at approximately what angle from the horizontal would the fish look up to see a fisherman standing on a distant dock? (nwater = 1.33) a.
- In a two-slit interference experiment, a viewing screen is placed 5 meters directly behind two slits separated by 4 µm. coherent, monochromatic light of wavelength λ = 700 nm emerges (in phase) from
- The electric motor of a model train accelerates the train from rest to 0.730 m/s in 23.5 ms. the total mass of the train is 875 g. (a) find the minimum power delivered to the train by electrical trans
- Wet steam in a steam line at 2000 kpa is throttled to 100 kpa and 120 °c. what is the quality in the steam line prior to throttling?
- What is the maximum possible speed of an impact on the surface of earth for a faraway body initially at rest that falls to earth by virtue of earth's gravity only?
- Which aspect is similar in both chemical and nuclear reactions? A. Both involve nuclear fusion. B. Both involve nuclear fission. C. Both may release heat and light. D. Both involve the exchange of
- Westinghouse and edison fought what was known as the war of the currents. Eventually, westinghouse triumped using Alternating current for power distribution. Alterning current is better for power gene
- Eddie and Val observed the picture of an athlete running in a race. Eddie stated the picture shows potential energy being transformed to kinetic energy. Val stated that it shows chemical energy being
- A silver cube has sides that measure 2.5 meters. The cube is heated from 15°C to 30°C. What is the change in its volume?
- How boiling point and vapor pressure is related to each other Explain in detail
- What is boiling point expplain clearly
- How boiling point and vapor pressure is related to each other Explain in detailHow boiling point and vapor pressure is related to each other Explain in detailHow boiling point and vapor pressure is re
- My teacher has asked me to keep an eye on Tiangong-1 because I am the only person in my class that she actually trusts not to prank her. If there is anyone out there that can help me monitor our star
- Which change will cause the gravitational force between a baseball and a soccer ball to increase ? Check all that apply Moving the balls closer together Moving the balls further apart Wrapping the
- An astronaut in a spacecraft looks out her window and observes a comet travel in the opposite direction at a relative speed of 237 m/s. The velocity of the spacecraft is 114 m/s directly away from the
- A disc of radius r moving ion perfectly smooth surface at aspeed v collides elastically with an identical stationarydisc.Express the magnitude and direction of the velocity of each ofthe discs after t
- Determinate the phase difference between tow waves overlaping on an infinitely large screen placed at distance D from two point sources A and B as a function of the coordinate y where the waves overla
- A child Twirls his yo-yo horizontally about his head rather than using it properly. the yo-yo has a mass of .2 kg and is attached to a string .8 m long. if the yo-yo makes a complete Revolution each s
- PLEASE HELP WILL GIVE BRAINLESS ANSWER Sea ice has decreased to 3.41 million square kilometers, which is about 50 percent smaller than it was in the year 2000. List two animals that will need to adap
- A miner develops cancer of the esophagus. Ten years before, he had been exposed to radiation when he worked for a year in a mine. He had also smoked cigarettes for a number of years, but had quit five
- Because parents are concerned that children are learning "wrong" science from TV, you have been asked to be a technical advisor for a science fiction cartoon show on Saturday morning. In the plot, a v
- Jennifer regularly instructs her students to avoid believing age-old theories about the differences between men and women. “As it turns out”, she says, “men and women are far more alike than we
- Imagine you are examining a system that involves the development of more fuel efficient school buses. In the Universal Systems Model, the feedback step would include which of the following? a) Compari
- I need a lab report please check the picture that i attached first. Thank you.
- The image below shows two opposite forces acting on a rope, what can we say is true about the affect of the forces on the rope? A) It cannot be determined without knowing which man is stronger. B) It
- Density involves the amount of a material in a certain volume. When a material changes phases, it changes in density in a predictable way as the amount of material stays the same but the molecules get
- Which of the following is a part of the geocentric model? All objects in the universe are perfect spheres. All objects in the universe move around the sun. All objects in the universe revolve around E
- I need a lab report please check the picture that i attached first. Thank you.
- Which describes the difference between ionic and covalent bonds? A. An ionic bond forms when molecules of opposite charges are attracted to each other; covalent bonds are formed when nonmetal compoun
- A motor boat travels east with a velocity of 4 meters/second relative to the water when it encounters a current with a velocity of 7.0 meters/second north relative to the shore. What is the resultant
- Lena would like to be able to know her exact location on a map as she travels across the country. Which technology would best help Lena? CB radio, because it uses HF radio waves. MRI, because it uses
- A source of sound waves approaches a stationary observer through a uniform medium. Compared to the frequency and wavelength of the emitted sound, the observer would detect waves with a? A) Higher freq
- A small rubber wheel is Used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 2.0 cm and accelerate at rate 7.4 red school esqui
- A 0.6 kg basketball with a velocity of +6 m/s rolls toward a 0.2 kg ball of clay with a velocity of +1 m/s. If the balls collide and stick together, what is the velocity following the collision? A. +
- Aluminum is a highly reactive metal that oxidizes when exposed to air. Which of these would be a good first step in balancing this reaction? Al + O2 → Al2O3 A) Put a coefficient of 3 on Al B) Put a
- Under which condition would time periods of daylight and darkness be equal everywhere on Earth all year? A. if Earth revolved around the sun in a more circular orbit B. if Earth rotated on an axis tha
- Which of the following represents the conditions under which nuclear decay would most likely occur? A. Strong nuclear force = electrostatic force B. Strong nuclear force electrostatic force C. Electro
- If a current of 2 amps is moving through a circuit connected to a 9 V battery, what is the resistance of the circuit? ? 4.5 ohms 18 ohms 0.2 ohms 7 ohms I think that the answer might be D because 9-2
- How much electrical potential energy is stored in a capacitor that has 8.0 × 10-10 C of charge on each plate and a potential difference across the plates of 20.0 V? A. 1.0 × 10-11 J B. 8.0 × 10-9 J
- Eric is driving at 72km/h on a level highway when a kangaroo jumps out in front of his car. The mass of the car including the driver and passengers is 1500kg. If the coefficient of static friction bet
- When I current is running through a coil of wire with an iron core what is created around the wire that is carrying the current? A. An electric force B. A magnetic field C. An electric field D. A magn
- If there is no room for you to enter at the other side of an intersection, you should: A. Enter the intersection and wait behind the line of traffic B. Turn rather than proceed straight ahead C. Wait
- The potential difference across a resistor increases by a factor of 2. How does the current change? (Ohm's law: V = IR) A. It decreases by a factor of 2. B. It increases by a factor of 4. C. It increa
- Which of the following best describes how an electromagnetic wave travels? A. Oscillating magnetic fields are parallel to oscillating electric fields, which are perpendicular to the direction of wave
- 7. In terms of thermal energy, why does a bottle of soda left in the sun have a higher temperature than one left in an ice chest? 8. Which has more thermal energy, a 5-kg bowling all that has been res
- Identify the parts of the experiment. Johnny wants to know which soil substrate will absorb the most solar radiation. He fills three beakers with 350 ml of soil. One beaker receives sand, one receives
- Any two objects of mass are attracted to each other gravitational, if object A has mass of 74kg and object B has a mass of 361,000kg and the centersof their masses are 971m apart from each other, if t
- Um veículo percorre 120 km com velocidade escalar média de 60 km/h. A seguir ele percorre mais 150 km, com velocidade escalar media de 50 km/h. Qual é a velocidade escalar média desse veículo no
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In three to five complete sentences, describe ways lasers are used to help mankind. Remember to use proper grammar and mechanics when writing your sente
- Aluminum is a highly reactive metal that oxidizes when exposed to air. Which of these would be a good first step in balancing this reaction? Al + O2 → Al2O3 A) Put a coefficient of 3 on Al B) Put a
- lab reportI attached files so please check that.
- John goes for a run. From his house, he jogs north for exactly 5.0 min at an average speed of 8.0 km/h. He continues north at a speed of 12.0 km/h for the next 30.0 min. He then turns around and jogs
- In two or more complete sentences, explain how you can prove that the number of degrees that the Moon rotates around the Earth every five days is approximately 61⁰. Please help I'm literally stuck o
- Hey guys, I need some help with this discussion:1. Find the wavelength and period of the tuning note A440.2. Find the wavelength and period of a kick drum fundamental of 50 Hz.3. Find the
- On a piece of graph paper, create an amplitude vs. time graph of a sine wave with an amplitude of 5 Pa and a period T = .03 sec.What is the frequency of this wave?Now plot the same wave on a pressure
- Divide the fundamental Frequency of F#5 by the frequency of A4 in the following tuning systems. Round your answers (if necessary) to the nearest 0.000001: a) Equal Temperament Tuning b) Just Intonat
- a) If we were to breake an octave into a number of half-steps, which of the following numbers would produce an interval whose frequency ratio is closest to 3/2 when Equal Temperament Tuning is used?b)
- Electromagnetic force is present when electromagnetic fields - a. become charged as they lose electrons. b. become stable as they come in contact with other forces. c. interact with charged particl
- Two satellites, X and Y, are orbiting Earth. Satellite X is 1.2 × 106 m from Earth, and Satellite Y is 1.9 × 105 m from Earth. Which best compares the satellites? Satellite X has a greater period an
- Here's an assignment I need help with for my Acoustics class. It is due on Sunday, so there's no rush. I tried to attach 5 short video clips that would have helped with the assignment, but the system
- A moving object is in equilibrium. Which best describes the motion of the object if no forces change? It will change directions. It will slow down and stop. It will maintain its state of motion It wi
- Elements are arranged in groups by similar atomic structure on the periodic table. This allows for an element's properties to be predicted based on general periodic trends. One of these trends, electr
- Jayden has been given 5 cubic centimeters each of 4 unknown samples of gaseous substances. He has been asked to identify which one is hydrogen. look at graph. If the density of hydrogen is 0.00009 g/c
- What is special about an AC circuit? A. Charge moves in a single direction. B. It has only series or only parallel components. C. It has both series and parallel components. D. Charge moves back an
- Complete a frase: A Lei Nº 13.146, de 06 de julho de 2015 que institui a Lei Brasileira de inclusão da Pessoa com Deficiência ou também denominada Estatuto da Pessoa com Deficiência tem o objetiv
- Can you put this in your own words plz. ''Uses of Xenon. Xenon is used in photographic flashes, in high pressure arc lamps for motion picture projection, and in high pressure arc lamps to produce ultr
- Which statement about convection is correct? A. Convection occurs when a heated particle comes in contact with another particle, transferring heat. This transfer of heat can occur in solids, liquids,
- Which type of relationship is shown by using a circle graph? A. the constant ratio between two variables B. the inverse ration between two variables C. how measurements compare to each other D. how a
- A hockey puck of mass m and radius r slides across frictionless ice. It has translational speed v to the right and rotational speed w clockwise. It grazes the "top" end of a rod of mass m and length 2
- Which object has the least amount of kinetic energy? 1. Mass and velocity are each reduced by one-half, 2. mass is reduced by one-half, and velocity is doubled, 3. mass is doubled and velocity is r
- An x-ray with a wavelength of 3.5 × 10^-9 m travels with a speed of 3.0 × 10^8 m/s. What is the frequency of this electromagnetic wave? A. 9.52 × 10^-1 Hz B. 8.57 × 10^16 Hz C. 1.17 × 10^-17 Hz D
- lab reportPlease check the attach file
- What is the first step of the hydrogen fusion process
- While researching machines and how they work, Tika finds several online sites that discuss how force and distance are related to work done by a machine. How should Tika most likely describe this relat
- The graph shows neutron number versus proton number for stable nuclei. What conclusions can be drawn from the graph? A. As the number of protons increases, more neutrons are needed to create stable nu
- The graph of quadratuc function f(x) had a minimum at (-2,-3) and passes through the poin (2,13).the function g(x) is represented by the equation g(x) = -(x+2)(x-3) how much greater is the y intercept
- 1. (9 points) A 0.600 kg unknown substance absorbs 5.260 x 104J of heat to raise its temperature by 100 degrees C. What is the specific heat of this substance? Show your work.
- Please complete this discussion on graph paper and scan or digitally photograph your work. A stringed instrument generates a complex waveform with the following components: · 250 Hz with an
- Polar and Frequency Response For this discussion, you will chart the frequency response and polar response of one of your microphones. Solve the following issues: 1. What source signal will you
- Polar and Frequency ResponseFor this discussion, you will chart the frequency response and polar response of one of your microphones. Solve the following issues:1. What source signal will you use
- Polar and Frequency ResponseFor this discussion, you will chart the frequency response and polar response of one of your microphones. Solve the following issues:1. What source signal will you use
- 1. A mechanic releases a small object with a density of 1.5 g/cm3 and a volume of 1.0 cm3 into a large vat of motor oil whose density is 888.1 kg/m3. The container is 12.0 m deep wit
- Sound Pressure and Sound Pressure Level The following five problems should be calculated on paper, scanned or photographed, and submitted for credit. Convert the following sound pressures to sound
- Sound Pressure and Sound Pressure Level The following five problems should be calculated on paper, scanned or photographed, and submitted for credit. Convert the following sound pressures to sound
- 10 multiple choice question.
- Assignment 3: Receiver Flow Chart(files attached)For this week's final assignment, you will generate a flow chart for a home theatre receiver with the following specifications: · built-in AM/F
- Assignment 3: Receiver Flow Chart (files attached) For this week's final assignment, you will generate a flow chart for a home theatre receiver with the following specifications: · built-in A
- Finish the 5 Turn-in problems only. Make sure to follow the problem solving rubric.
- Finish the 5 Turn-in problems only. Make sure to follow the problem solving rubric
- Hi, I think you didn;t post the answer of my questions
- Finish the turn-in questions 1 to 5. Please make sure to follow the problems solving rubric
- A pile driver, of mass 220 kg is allowed to fall from rest through a distance of 1.8m on to a 380 kg concrete pile to drive it into the ground. Each impact drives the pile into the ground by a furthe
- Do the following problems on paper. Scan or photograph your work and submit. 1. If one loudspeaker produces a sound pressure level of 78 dB at a distance of 3 m, and another produces a level of 8
- The console we will be working on for our final assignment is a classic in-line analog console with the following I/O controls and specifications: · Mic Preamp/Trim· Small Fader·
- The console we will be working on for our final assignment is a classic in-line analog console with the following I/O controls and specifications: · Mic Preamp/Trim· Small Fader· Large Fader· Lar
- HelloPlease see attached diagram, can you update this diagram to show 2 emergency stops
- 1. Measuring Point and Area Sources: Find both a point source and an area source and conduct some measurements with your sound level meter to demonstrate the NR of each. Use distances that make sense
- Do the following problems on paper and scan or photograph them for submission. 1. You want to install a new air conditioning condenser in back of your house. Your neighbor's house is 40 m from the
- Assignment 5: Sound Level, Power and Voltage Please show all your work. No credit will be given for incomplete answers. · Using log10 2 = .3, solve the following without using a calculator or
- 6 multiple choice questions
- Two audio devices are placed in series such that:G1= 20 log , [G1= gain of device one]G2= 20 log , [G2= gain of device two]Show that:G3= G1+ G2, [G3= gain of device one and device two in series].(Hi
- A 0.600 kg unknown substance absorbs 5.260 x 104J of heat to raise its temperature by 100 degrees C. What is the specific heat of this substance? Show your work. A 0.600 kg unknown substance absorbs
- The switch in the figure is closed at t = 0.Find the time constant of the circuit if L = 24.5 mH, E = 10.5 V, R = 5.43 . Answer in units of ms Calculate the current in the circuit at t = 1.99 ms. Answ
- Assignment 6: Calculations Do the following on paper, scan or photograph your work, and submit it. You have a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m. The floor is hardwood
- I need help with this assignment on gain structure. I have attached it for better viewing. Thx
- The switch in the figure is closed at t = 0.Find the time constant of the circuit if L = 24.5 mH, E = 10.5 V, R = 5.43 . Answer in units of ms Calculate the current in the circuit at t = 1.99 ms. An
- In cities that have outdoor rock/pop music venues, people several kilometers away often complain about hearing a low-frequency thumping sound (we know this as the kick drum) during events. Why do you
- At some point you have probably experienced wave action that you could see in an object other than the surface of water. Describe that example with as much detail as possible for us to visualize it.
- Please calculate the following: 1. You find an unlabeled resistor, and tests using a 9V battery yield a 100 mA current. What is the value of the resistor in ohms? 2. What is the power potentia
- Assignment 7: Room Acoustics In last week's assignment, you calculated mean free path, total absorption, and reverberation time for a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m.
- Up for bid is my midterm exam that is due by the end of the week. It is only eight questions long (six regular and two extra credit), and it deals with frequency response, gain structure, waveforms, a
- need answers for the attachment
- 1
- Assignment 8: Digital Recording Studio A client has contracted you to put together their digital recording studio. For your final assignment this week, you will set up their studio, which includes th
- Assignment 8: Calculating Total Absorption 1. Based on the geometric measurements provided and the acoustical data measured, calculate the total absorption in this room in each octave band. (Hint
- A client has contracted you to put together their digital recording studio. For your final assignment this week, you will set up their studio, which includes the following components:· SSL Alph
- Please see attached file.Can it be comlpeted in word format rather than handwritten.Thanks
- Please see question below. I would like it completed in word format rather than hand written please.4(a)A vehicle of mass 1200 kg accelerates uniformly from rest to a velocity of15 m/s in 5 seconds. I
- Assignment 7: Room Acoustics In last week's assignment, you calculated mean free path, total absorption, and reverberation time for a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m.
- Note: Please keep the answers short (2-3 sentences max). ThxDiscussion 9.1: Subjective Evaluation of Isolation The degree of sound isolation of all materials is very frequency dependent. Spend some t
- Complete the following problems. Scan or photograph your assignment work and submit it. 1. The TL of 10 mm thick sheet of plywood at 1000 Hz is 34 dB. Based on the Mass Law, what is the expected TL:
- A ball is left at an angle of 25 degreeS to the horizontal from a plane at a height of 10 m with a velocity of 12m/s at what distance will the ball land On the horizontal surface At zero height?A ball
- These are some of the questions related to mechanics. 1.1 - One stone is thrown from the top of a building (as we can see in the picture below), falling 15 meters after the building, after 5 seconds.
- Below is the requirement and the topic and attached is my report see you can help me to revise it to get a higher mark.Option 2: Hello, I am an engineering consultant currently working on a project in
- Different kinds of substances have different properties. Compare and contrast the electrical properties of salts, metals, and acids.
- Different kinds of substances have different properties. Compare and contrast the electrical properties of salts, metals, and acids. Different kinds of substances have different properties. Compare an
- Do the following calculations on paper. Scan or photograph and submit. You are building a recording studio, and want to have a high level of sound isolation between the live room and the control room
- 1. ASTC provides a better basis for comparison to STC, but why might NIC be more useful in real buildings than ASTC? Which one would better assess the impact of intruding sound on the occupants of the
- 1. In 1666 Issac Newton discovered that white light is composed of all the colors of a rainbow. 2. The colors of the visible spectrum are red, orange, yellow, green, blue and violet. 3. In 1861 James
- True or false1. In 1666 Issac Newton discovered that white light is composed of all the colors of a rainbow. 2. The colors of the visible spectrum are red, orange, yellow, green, blue and violet. 3.
- As you learned above, standing waves in strings behave differently than those in a room. Consider why the shapes of these two waves are different. What is it about a string that puts the nodes at the
- For this week’s assignment, you will conduct a full model analysis of your room. · On paper, calculate the first two axial modes in each axis for your studio or listening space. · Scan
- (a) Read the posted NYT article on "Fukushima: When Radiation isn't the Real Risk". (b) Do a brief calculation to show how to arrive at the quoted number of expected cancers due to radiation.
- Discussion: Loudspeaker Design Loudspeakers, particularly in the "hi-fi" industry, are often designed with sharp points to rigidly connect them to the floor. Why might this not be a good idea, partic
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- Please could the following question be answered and completed on a word document please.
- Raising children today is not easy. Their health is impaired by diet, lack of exercise, environmental toxins, and stress. They are subject to bullies in school, negative influences in the media, and
- Identify a current problem in physics by searching for news articles and current events. One reputable source of news in physics is Phys.org. Choose one article, and in two pages, describe how the sci