Question

In a sinusoidal wave of moderate loudness, the maximum pressure variations are about above and below atmospheric pressure. Find the corresponding maximum displacement if the frequency is 10,000 Hz. In air at normal atmospheric pressure and density, the speed of sound is 344 m/s and the bulk modulus is .

Answer 1

$\Delta x=\frac v\nu=\frac{344}{10000}=3.44~cm.$