As Luke rides his bike down a hill, potential energy is converted to kinetic energy. What is this an example of?

A. Law of universal gravitation

B. Theory of relativity

C. Theory of momentum

D. Law of conservation of energy

How do you calculate elecrical power?

A spring has a natural length of 28 cm. If a 27-N force is required to keep it stretched to a length of 32 cm, how much work W is required to stretch it from 28 cm to 30 cm? (Round your answer to two decimal places.) W = 13.

An 800 kg car is moving at 32 m/s. What magnitude force is needed to bring that car to a stop in 30 seconds?

What is the frequency in vibrations per second of a 200 hertz wave?

Will an object with more mass roll faster down a hill?

A number of food chains linked together

Inside a stereo speaker, you will find two permanent magnets: one on the cone and one near the cone. True of false?

When a hurricane nears land what causes the most damage

Calculate if an electric hair dryer uses 2,400 j of energy in 2 s, what is its power?

Which of the following choices best represents a potential stressor?