Two illustrations of transverse waves. The one with shorter crests is labeled A. The wave with taller crests is labeled B. Which wave, A or B, has higher energy? A, because it has a higher amplitude B, because it has a higher amplitude A, because it has a lower amplitude B, because it has a lower amplitude.

What is the length x of the side of the triangle below? (hint: use the cosine function)

The movement of electrons between atoms is called an

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.