Question

A sinusoidal wave travels with speed 250 m/s . its wavelength is 3.5 m . part a what is its frequency

Answer 1

The relationship between the frequency f of a wave, its wavelength
`\lambda` and its speed v is given by

`v=\lambda f`
The wave of our exercise has a speed of
`v=250 m/s` and a wavelength of
`\lambda=3.5 m`, so re-arranging the previous equation we can find its frequency:

`f = (v)/(\lambda)= (250 m/s)/(3.5 m)=71.4 Hz`