A loud factory machine produces sound having a displacement amplitude of 1.00 m. but the frequency of

Question:

A loud factory machine produces sound having a displacement amplitude of 1.00 µm. but the frequency of this sound can be adjusted. In order to prevent ear damage to the workers, the maximum pressure amplitude of the sound waves is limited to 10.0 Pa. Under the conditions of this factory, the bulk modulus of air is 1.42 X 105 Pa .What is the highest-frequency sound to which this machine can be adjusted without exceeding the prescribed limit? Is this frequency audible to the workers?