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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
13 Nov 2021

Given information

Given:

At a distance of metres, the sound level of a jet aeroplane engine is decibels.
 
The human ear's effective radius is cm.

Step-by-step explanation

Step 1.

The sound pressure level is expressed in dB as follows:

 

The sound intensity is , while the reference intensity is .

The following is the power in terms of intensity and area:

 

 

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