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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
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Is the state of the air in an isolated room completely specified by the temperature and the pressure? Explain
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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.
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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
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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
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Which of the following is only a muscular strength activity you can do at school Walking Dancing Martial arts Push ups
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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?
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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
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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 )
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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
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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
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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
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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?
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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
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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
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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
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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
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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
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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
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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
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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?
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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.
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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.
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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
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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
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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?
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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.
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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
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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
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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?
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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?
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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?
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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
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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
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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.
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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
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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
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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
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Which of the following fields includes the study of hurricanes? a.)hydrology b.)geology c.)meteorology d.) astrology
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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
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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
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Environmental science is the study of a. organismal relationships b. human impact on the Earth c. ecosystems d. all of the above
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A guitar player shortens the length of a guitar's vibrating string by pressing the string straight down onto a fret.
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How can a person maintain a healthy body image? What forces work to make people feel bad about their body images?
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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
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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
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The graph shows world energy source use - describe the trend in the graph and suggest 2 reasons for changes over time.
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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?
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After learning about CPT code how have you been able to personalize some of the codes to better understand coding
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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
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