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1. A moving object collides with a stationary object and the two objects stick together. Which of the following statements describes the transformation of kinetic energy during the collision?
a) All of the kinetic energy is transformed to momentum.b) Some, but not all, of the kinetic energy is transformed to momentum.c) All of the kinetic energy is transformed to heat energy.d) Some, but not all, of the kinetic energy is transformed to heat energy.
2. A bicyclist rides at a constant speed of 3.5m/s up a slope at 4.5 degrees to the horizontal. If the total mass of the person and the bicycle is 85kg, what is the power of the cyclist?
A. 23 WB. 65WC. 230 WD. 2900 W
A soccer ball floats in a pond of pure water. The ball has a mass of 0.3 kilogram and a circumference of 70 centimeter. Obtain the average density of the soccer ball
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Positive focal lengths correspond to _______.
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a 20 kg mass sits on an inclined plane with friction making an angle of 50 degrees with respect to the horizontal. calculate the frictional force required to keep the mass from sliding down the incline
Water at the top of Horseshoe Falls (part of Niagara Falls) is moving horizontally at 8.7m/s as it goes off the edge and plunges 53 m to the pool below. at what angle with respect to the vertical is the falling water moving as it enters the pool
Find the current in the large circuit 100 μs after S closed - Find the current in the small circuit 100 μs after S is closed.
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