Question

What is the frequency of a wave whose wavelength is 0.7m and whose velocity is 120m/s?

Answer 1

f=171.43Hz

Step-by-step explanation:

Wave frequency is the number of waves that pass a fixed point in a given amount of time.

The frequency formula is: f=v÷λ, where v is the velocity and λ is the wavelength.

Then replacing with the data of the problem,

f=
`(120(m)/(s) )/(0.7m)`

f=171.43
`(1)/(s)`

f=171.43 Hz (because
`(1)/(s) = Hz`, 1 hertz equals 1 wave passing a fixed point in 1 second).