Thank you Damon for answering my other question.. I appreciate... The distance between two successive crests of a water wave travelling at 3.6m/s is 0.45m. Calculate the frequency of the wave?

Answer 1

3.6 / .45 = ? hz

Answer 2

L = V*T = V*(1/F) = Wavelength.
0.45 = 3.6 * 1/F,
1/F = 0.125,
F = 8 Hz.