Two waves have the same frequency. One has an amplitude of 0.5 billionths of a meter. The other has an amplitude of 1 billionth of a meter. Which wave has higher energy?

A. they both have equal energy.
B.the wave with an amplitude of 1 billionth of a meter is higher
C. energy cannot be determined without wavelength
D. the wave with an amplitude 0.5 billionth of a meter is higher

B. the wave with an amplitude of 1 billionth of a meter is higher

Energy is directly proportional to the square of the amplitude of a wave. Therefore, the wave with a higher amplitude will have higher energy.