Consider a sound wave in air that has displacement amplitude 0.1mm.calculate the pressure amplitude for frequensis of:

Question

1) 500 Hz
2) 20,000 Hz

Answer 1

pmax = A*B*k
where k = 2πf/v
v = 344 m/s speed of sound and B = 1.42x10^5 Bulk modulus of air
change amplitude to meters from mm.