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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
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The ISS orbits the earth at an altitude of 400km (400000m). what is the earths gravitational field at that height?
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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
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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
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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
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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
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In addition to the distance from a charged particle, what other factor determines the magnitude of the electric potential?
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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?
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In terms of r and c , determine the time required for the charge on the capacitor to rise to 50% of its final value.
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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
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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
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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
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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
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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
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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
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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
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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
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Gloria wants to search for a website on home decor. What can Gloria type on her web browsers address line
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The region where warm and cold air masses meet is called a a. pocket. c. front. b. cloud. d. nimbus.
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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
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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?
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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
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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
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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
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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
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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 .
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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
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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
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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
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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
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Physics Lab report. Please this carefully and do your best.
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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
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A vehicle ___________ occurs when the driver begins to back up and is unaware that a person is behind the vehicle.
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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
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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
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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.
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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
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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
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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.
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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.
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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
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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
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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
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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
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The theory of plate tectonics describes this process as a gradual movement of the tectonic plates across the Earth’s lithosphere.
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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.
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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
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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
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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?
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Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same length. Which of the two bulbs will have thicker filament?
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