Question

"As you sit in a fishing boat, you notice that 12 waves pass the boat every 45 s. If the distance from one crest to the next is 9.2 m , what is the speed of these waves?"

Answer 1

Answer:

2.4564 m/s

Explanation:

Number of waves in 1 second

$\dfrac{12}{45}=0.267\ Hz$

This is the frequency 0.267 Hz

The distance mentioned in the question is the

$\lambda$ = Wavelength = 9.2 m

The speed of wave is

$v=f\lambda$

$\Rightarrow v=0.267\times 9.2$

$\Rightarrow v=2.4564\ m/s$

The speed of the wave is 2.4564 m/s