You observe that 32 crests of a water wave pass you each minute. If the wavelength is 10 m, what is the speed of the wave?

1 answer

F=32crest/1min 32crest/60s=0.533crest/s
= 0.533cycles/s = 0.53Hz.

L = V/F.
V = LF = 10 * 0.533 = 5.33 m/s.