A sound wave travels at a speed of 339 m/s. If its wavelength is 1.5 cm, what is the frequency of the wave?

Given,

speed (v)=339m/s

wavelength (λ)=0.0015 m

frequency (f)=?

The number of vibrations made by a particle of the medium in one second is called the frequency of a sound wave.
Frequency's  mathematical expression is as follows: 

$\mathrm{f}= \frac{\mathrm{v}}{\mathrm{\lambda }}$

$f= \frac{339}{0.0015}= 22600 Hz$

$f= 22600 Hz$