1.

A rope is used to pull a metal box 20.0 m across the floor. The rope is

held at an angle of 30.00 with the floor and a force of 525 N is applied.

How much work does the force on the rope do?

What is the kinetic energy of a 2000-kg boat moving at 5.0 m/s

What form of energy is changed to sound energy when uou use a cd player?

In a uranium fission reaction, uranium splits into two smaller atoms of energy. Where did the energy come from? A. When the uranium splits, mass and energy are created making the two new atoms. B.

Yasmin determines the velocity of a car to be 15 m/s. The accepted value for the velocity of the car is 15.6 m/s. What is Yasmin's percent error? 0.04% 3.3% 3.8% 60%

g The index of refraction for water is about What happens as a beam of light travels from air into water? Its speed increases to, and its frequency decreases. Its speed decreases to, and its wavelength decreases by a factor of.

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?