This is a measure of the average kinetic energy of a substance.

What is created when solids,liquids,an gases mix with one another

Does heating a metal wire increase or decrease its electrical resistance? why?

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane