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A frog leaps vertically into the air and encounters no appreciable air resistance. Which statement about the frog’s motion is correct?

How far away is a lightning strike if you hear the thunderclap 6.0 s after you see the lightning bolt strike? (vsound = 340 m/s, vlight = 3.0 × 108 m/s)

If an amount of heat Q is needed to increase the temperature of a solid metal sphere of diameter D from 4° to 7°, the amount of heat needed to increase the temperature of a solid sphere of diameter 3D of the same metal from 4° to 7° is

A force of 16.88 N is applied tangentially to a wheel of radius 0.340 m and gives rise to an angular acceleration of 1.20 rad/s2. Calculate the rotational inertia of the wheel.

A 0.140 kg baseball is thrown with a velocity of 28.9 m/s. It is struck with an average force of 5000.0 N, which results in a velocity of 37.0 m/s in the opposite direction. How long were the bat and ball in contact?

A golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 m/s immediately after being struck. If the club and ball were in contact for 0.81 ms, what is the average force exerted on the ball?

A block is on a frictionless table, on earth. The block accelerates at 3.0 m/s2 when a 20 N horizontal force is applied to it. The block and table are set up on the moon. The acceleration due to gravity at the surface of the moon is 1.62 m/s2. The weight of the block on the moon is closest to:

A ball thrown horizontally from the top of a building hits the ground in 3.0 s. If it had been thrown with three times the speed in the same direction, it would have hit the ground in

A solid cylindrical bar conducts heat at a rate of 25 W from a hot to a cold reservoir. If both the length and the diameter of this bar are doubled, the rate at which it will conduct heat between these reservoirs will be

You heat a sample of air to twice its original temperature (in Kelvin) in a constant-volume container. The average translational kinetic energy of the molecules is