Question

The sound intensity 30 meters from a jet engine is 10 Watts per square meter.

1. What is the sound intensity level, in decibels, at the specified location

a = 10 log [ I / I_O ]

I_O = 10^-12 W/m²

I = 10 Watts

a = 130 dB

B. Without hearing protection, repeated exposure to sounds at or above 80 decibels can cause hearing loss. What minimum distance from the source (the jet engine) would a listener have to keep in order to prevent hearing damage?

Please show your complete work. Thank you!

Answer 1