Question

what is the period of the wave while abdel is surfing if the wave propels him toward the beach with a speed of 5.0m/s and the wave crests are 2.0 m apart?

Answer 1

The period of waves is given as follows:

$$T = \dfrac{\lambda}{v}$$

where $\lambda = 2m$ is the wavelength, and $v = 5m/s$ is the speed. Thus, obtain:

$$T = \dfrac{2m}{5m/s} = 0.4s$$

Answer. 0.4 s.