{342+10}{342+5}})}

Fhsst waves46.png {\displaystyle f’=f({\frac {v\pm v_{0}}{v\mp v_{s}}})} {\displaystyle f’=f({\frac {v\pm v_{0}}{v\mp v_{s}}})} f’ is a observed frequency, f is a actual frequency, v is a speed of sound ( {\displaystyle…