Question

A wave is traveling at 36 m/s. If its wavelength is 12 m, how many times does a wavelength move across a set point every second?

Answer 1

how many times does a wavelength move across a set point every second is frequency.

frequency = speed of wave/ wavelength

frequency=36/12 = 3Hz

Answer 2

The frequency of a wave is 3 Hz.

Explanation:

Given that,

Speed of a wave, v = 36 m/s

Wavelength, $\lambda=12\ m$

We need to find the the number of times a wavelength move across a set point every second or the frequency of a wave. The relation between the wavelength, frequency and speed of a wave is given by :

$v=f\lambda\\\\f=\dfrac{v}{\lambda}\\\\f=\dfrac{36\ m/s}{12\ m}\\\\f=3\ Hz$

So, the frequency of a wave is 3 Hz. Hence, this is the required solution.

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