Suppose you watch a leaf bobbing up and down as ripples pass it by in a pond.You notice that it does two full up and down bobs each second.Which statement is true of the ripples on the pond?
A)They have a frequency of 4 hertz.
B)They have a frequency of 2 hertz.
C)We can calculate the wavelength of the ripples from their frequency.
D)They have a wavelength of two cycles per second.

Question

Quizplus · Accepted Answer

The frequency of the leaf's bobbing is 2 Hz. This means that it completes two full cycles (one up and one down) every second as it is being affected by the passing ripples. Therefore, the ripples themselves also have a frequency of 2 Hz.

Suppose You Watch a Leaf Bobbing Up and Down as Ripples