Question

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

Answer 1

Answer:

f=171.43Hz

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=$\frac{120\frac{m}{s} }{0.7m}$

f=171.43$\frac{1}{s}$

f=171.43 Hz (because $\frac{1}{s} = Hz$, 1 hertz equals 1 wave passing a fixed point in 1 second).