During energy transformation, all energy systems: are a. 100 percent efficient b. lose energy c. gain heat energy d. create energy

Distinguish between a transverse wave and a longitudinal wave.

What occurs during a combustion reaction

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.