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Regulation tennis balls have a mass of 57.5 g. When dropped from a height of 3.07 m they must rebound to a height of 2.13 m to be acceptable for play. What is the loss in kinetic energy when these balls rebound?
What happens in the table as to the potential energies
A 4.0 kg particle starts from rest at x = 0 and moves under the influence of a single force Fx = 6 + 4x - 3x2, where Fx is in newtons and x is in meters. Find the power delivered to the particle when it is at x = 2.0 m
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b, What is her average speed over the entire trip
Determine the change in gravitational potential energy of a 70-kg skier-Earth system when the skier goes down this slope.
Stars, to a good approximation, are spherical, and emit electromagnetic radiation from a surface of emissivity e = 1. What is the diameter (in millions of km) of this star
A 40g block of ice is cooled to -78 deg celcius and is then added to 560g of water in an 80g copper calorimeter at a temperature of 25 degrees celcius, determine how much ice is left
After falling from rest from a height of 26.0 m, a 1.1 kg ball rebounds upward, reaching a height of 16.0 m. what average force was exerted on the ball
A man in a maze makes three consecutive displacements. His first displacement is 6.40 m westward, Find the magnitude and direction of his third displacement
fired horizontally at a speed of 550, goes completely through the block, emerging at a speed of 180 . Illustrate what is the speed of the block immediately after the bullet exits?
What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other? (Hint: Use charge conservation and solve for one of the initial charges. You would end up with a quadratic equation. The solutions g..
A sample of neon gas has its volume tripled and its temperature held constant. What will be the new pressure relative to the initial pressure
An 800-N man stands halfway up a 5 m long ladder of negligible weight. The base of the ladder is 3 m from the wall as shown. suppose that the wall-ladder contact is frictionless, wall pushes against the ladder with a force of what magnitude.
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