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Find the maximum efficiency that a heat engine could have when operating between the normal boiling and freezing temperatures of water?
A 3 x 10^2 kg piano is being lifted at a steady speed from groundlevel straight up to an apartment 10.0 m above the ground. Thecrane that is doing the lifting produces a steady power of 4.00 x10^2 W. How much time does it take to lift the piano?
question an 8.33g bullet is fired into a 300g block that is initially at rest at the edge of a table of h 1.08 m
An electron is accelerated to a speed where its total energy is 169 times larger than its rest energy. What is the speed of the electron in terms of the speed of light
to help keep his barn warm on cold days a farmer stores 832 kg of solar-heated water lf 3.35e5 jkg in barrels. for how
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. Evaluate at what speed is the car traveling?
questionthree point charges are located on the y-axis a charge q at ya a charge -2q at the origin and a charge q at
The energy gap in silicon is 1.1eV. The average electron effective mass is 0.31m, where m is free electron mass. Calculate the electron concentration in the conduction band of silicon at T=300K
To demonstrate conservation of angular momentum, you switch on the train's engine. The train moves counterclockwise, soon attaining a constant speed of 0.700 relative to the tracks.
A ball is thrown horizontally off the top of a building with a height of h=22.5m. What is the horizontal distance the ball travels before it hits the ground
neutrons are slightly more massive than protons. if the mass of a neutron were smaller than its actual value yet still
A 7kg squirrel walks to the end of a 15 kg board resting on two saw horses. When the squirrel is at the 1m position away from the right end of board, How long is the board
An ambulance with a sirenemitting a whine at 1730 Hz overtakes and passes a cyclist pedalinga bike at 2.3 m/s. How fast is the ambulance moving
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