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.

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