A person applies a force of 67 N for a distance of 11 m to push a desk across the floor. How much work is done

2 rocks of the same mass are rolling down a hill at different speeds (one faster than the other). which rick would have more kinetic energy?

What is the difference between the charges on a balloon rubbed in your hair and a glass rod rubbed with silk? why?

How is it that you are being pushed into your seat on a roller coaster when you are upside down?

How much work is performed when 17 newtons are moved 3 meters?

A 4.00 kg block is suspended from a spring with k 500 N/m. A 50.0 g bullet is fired into the block from directly below with a speed of 150 m/s and becomes embedded in the block. (a) Find the amplitude of the resulting SHM.

Based on how the book describes a heat pump in sec 16.3 how does a heat pump prove law of conservation of energy

When a gas in a container is squeezed to half its volume, its density?

A ballet student with her arms and a leg extended spins with an initial rotational speed of 0.90rev/s. As she draws her arms and leg in toward her body, her rotational inertia becomes 0.80 kg⋅m2 and her rotational velocity is 4.1rev/s.

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?