Question

Find the frequency of a wave of wavelength 2.5m and speed 400 m/s

Answer 1

The frequency of wave is 160Hz.

Step-by-step explanation:

Given that the formula of speed is V = f×λ where V represents speed, f is frequency and λ is wavelength.

So first thing, you have to make frequency the subject by dividing wavelength on both sides :

`v = f * λ \:`

`v / λ = f * λ / λ`

`f = (v)/(λ)`

Next you have to substitute the value of v and f into the formula :

Let λ = 2.5m,

Let v = 400m/s,

`f = (400)/(2.5)`

`f = 160Hz`