Question

A jet engine emits sound uniformly in all directions, radiating an acoustic power of 3.63 × 105 W. Find the intensity of the sound at a distance of 54.1 m from the engine and calculate the corresponding sound intensity level.

Answer 1

Power of the sound emitted by the jet engine = P = 3.63 x 10⁵ W

Distance from the jet engine = R = 54.1 m

Intensity of sound at 54.1 m from the engine = I

I = 9.869 W/m²

Sound intensity level at 54.1 m from the engine =

= 129.94 dB

Intensity of sound at a distance of 54.1 m = 9.869 W/m²

Sound intensity level = 129.94 dB