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A soccer ball is released from the top of a smooth incline. After 4.20 s the ball travels 11.1 m. One second later it has reached the bottom of the incline.
1) Suppose the ball's acceleration is constant and decide its value ( m/s2)?
2) How long is the incline?
A solid disk of radius R and mass 2.66 kg is spinning atangular velocity 64.7 rpm about a vertical axis. What is the mass of the second disk
A vertical cylinder with a heavy piston contains air at 320 K. The initial pressure is 3.35x10^5 Pa, and the initial volume is 0.270 m3. Calculate the mass of the air in the cylinder
The temperature near the surface of the earth is 310 K. A xenon atom (atomic mass = 131.29 u) has a kinetic energy equal to the average translational kinetic energy, how high up would it go before coming to rest
A spring with an unstrained length of 0.070 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
A uniform electric field of magnitude 300 V/m is directed in the positive x direction. A +10.0 µC charge moves from the origin to thepoint (x, y) = (20.0 cm, 50.0 cm).
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. Find the his and her initial acceleration
If you lie on the ground at night with no cover, you get cold rather quickly. Much of this is due to energy loss by radiation. Estimate the net rate at which your body loses energy by radiation to the night sky under these conditions
a piano string has a fundamental frequency of 100 hz is 1.0 m long and has a mass of 100 g. what is the tension on the
The Acapulco cliff diving competition, which was made famous in the 1970's on ABC's Wide World of Sports, involves a vertical drop of 37 m to the water below. How long will it take him to hit the water
A compact disk on a CD player rotates clockwise. The disk completes one revolution in 0.234 s, what is the angular velocity of the disk and its speed at 1.42 cm from the axis of rotation
An electrical generating plant operates a boiler at a temperature of 220 C, What is the maximum theoretical efficency of the plant
Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. Determine the final speed of each disk
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