Question

An ocean wave travels 10.9 m in 5.1 s. the distance between two consecutive wave crests is 4 m. what is the frequency of the wave? answer in units of hz.

Answer 1

The speed of the wave is given by Distance divided by time.
Speed = 10.9/5.1
= 2.14 m/s
But; speed is also given by frequency multiplied by wavelength
Wavelength is 4 m( distance between two successive crests)
thus; 2.14 = 4 × f
f = 2.14/4
= 0.535 Hz