Question

A vibrating object produces periodic waves with a wavelength of 53 cm and a frequency of 15 Hz. How fast do these waves move away from the object?

Answer 1

v = 7.95 m/s

Step-by-step explanation:

Given that,

Wavelength of a wave,
`\lambda=53\ cm=0.53\ m`

Frequency of a wave, f = 15 Hz

We need to find the speed of the wave. The speed of a wave is given by :

`v=f\lambda\\\\v=15\ Hz* 0.53\ m\\\\v=7.95\ m/s`

So, the wave move with a speed of 7.95 m/s.