Who were the first people on the moon?

A 40 kg box is placed on a 2 m tall shelf. a. What is the gravitational potential energy of the box? b. If the box falls off the shelf, what is its kinetic energy as it strikes the ground? c.

Describe Earth's three global wind belts

Larry's gravitational potential energy is 1870Jas he sits 2.20 m above the ground in a sky diving airplane. What is Larry's gravitational potential energy when he begins tojump from the airplane at an altitude of 923m?

A 1200-kg car is pulling a 500-kg trailer along level ground. Friction of the road on the trailer is negligible. The car accelerates with an acceleration of 1.3 m/s2. What is the force exerted by the car on the traile

Are longer wavelengths indicative of high or low frequency?

1. An automobile with a mass of 1000 kg accelerates when the traffic light turns green. If the net force on the car is 4000 N, what is the car's acceleration?

Imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball.

Under what conditions will an object experience a gravitational force? Under what conditions will an object experience an electric force? Under what conditions will an object experience a magnetic force?

A basketball player pushes down with a force of 34 N on a basketball that is inflated to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball! and the floor?

Match these terms with their definitions: 1. unit of electrical resistance ampere 2. unit of electromotive force or electrical potential ohm 3. unit for measuring the strength of an electric current volt 4. unit of electrical power watt