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A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 59% What is the warmer temperature?
Two divers jump from a 5-m platform. One jumps upward at 1.90m/s , and the second steps off the platform as the first passes it on the way down. By how much does the first diver hit the water first (seconds)
A 80 kg person sits on a 4 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter. Find the pressure in pascals exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.
A circular coil having an area of 24 cm^2 is plaved in a uniform magnetic field of 0.60T, which is derected vertically upward. Find the magnitude of the magnetic flux contained in the coil
A 1g plastic pellet is accelerated by an electirc field of 1000V/m over a gap of 12 cm, What is the velocity of the pellet after crossing the gap
A 1.0-kg ball has a velocity of 12 m/s downward just before it strikes the ground and bounces up with a velocity of 12 m/s upward. What is the change in momentum of the ball
A storage tank at STP contains 19.1 kg of nitrogen What is the volume of the tank. What is the pressure if an additional 15.7kg of nitrogen is added without changing the temperature.
if the current through a loop radius 50 cm is 2A, what is the magnetic field produced by the loop wire
A 420g oscillator has a speed of 128.5cm/s when its displacement is 3.30cm and 59.5cm/s when its displacement is 5.40cm .what is the oscillator's maximum speed
On a banked race track, the smallest circular path on which cars can move has a radius of 106 m, compute the largest speed at which cars can move on this track without relying on friction
If you hold a 400 cm^2 square plane mirror 43cm from your eyes and can just see the full length of an 8.1m falgpole behind you
A rock is dropped into an abandoned mine and a splash is heard 6 s later. determine the depth of the shaft
A typical power plant uses some fuel as the source of heat (QH) to drive a heat engine that does work (W) to drive a generator that is connected to the electrical grid.What is rate of flow and How do we find the power
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