A bagpiper is playing in the middle of the quad. To a person standing 20 m...

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A bagpiper is playing in the middle of the quad. To a person standing 20 m...

A bagpiper is playing in the middle of the quad. To a person standing 20 m away, the sound intensity level of the bagpiper is 90.6 dB.

17. [2pt]
What is sound intensity level 24 m away from the bagpiper? (Assume that the bagpiper is a point source of spherical waves.)

18. [2pt]
What's the intensity of the sound of the bagpiper 24 m away?

19. [2pt]
If the sound intensity level of one bagpiper is 90.6 dB twenty meters away, How many bagpipers would you need to produce 119.995 dB at this distance?

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Answer 1

Answer #1

Sound Intensity: B-10log A+ 10log I, 20 24 90.6) 62.92 dB 及

18. (2) = 10log 62.92 10 =log-2 log | | = 6.292 log 1,-log 1,-6.292 log 12-log(10-12)-6292 log 12-6.292 +log(10) 6.292-12-5.7

19 119.95 10 I. I. | = 1 1.9995 log I3 -log Io-11.9995 log13-log (10-12)=11.9995 log log 13-11.9995 +10g(10-n)-11.9995-12-_5x

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Answer 2

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A bagpiper is playing in the middle of the quad. To a person standing 20 m...

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