Question

A fisherman sees 7 wave crests

Answer 1

Answer:

Velocity of the wave is 1.7 m/s

Explanation:

As we know that the frequency of the wave is defined as the number of waves crossing a fixed point per second

So here we will have

$f = \frac{N}{t}$

$f = \frac{7}{10} = 0.7 Hz$

Also we know that the distance between two consecutive crest or two consecutive trough is known as wavelength

So here the wavelength of the wave is given as

$\lambda = 2.43 m$

now we have

$v = \lambda \times f$

$v = (2.43 \times 0.7)$

$v = 1.7 m/s$