Question

What is the frequency of a pressure wave of wavelength 2.5 m that is traveling at 1400 m/s?

Answer 1

The relationship between the speed, the frequency and the wavelength of a wave is given by:

`f= (v)/(\lambda)`
where
f is the frequency
v is the speed of the wave

`\lambda` is its wavelength

for the pressure wave in this problem,
`\lambda=2.5 m` and v=1400 m/s, therefore its frequency is

`f= (v)/(\lambda)= (1400 m/s)/(2.5 m)=560 Hz`