Problem 12.45: Eavesdropping. You are trying to overhear a juicy conversation, b

Question

Problem 12.45: Eavesdropping.

You are trying to overhear a juicy conversation, but from your distance of 24.0 m , it sounds like only an average whisper of 20.0 dB . So you decide to move closer to give the conversation a sound level of 65.0 dB instead.

Part A

How close should you come?

1331.28

SubmitMy AnswersGive Up

Incorrect; Try Again; 4 attempts remaining

Problem 12.45: Eavesdropping.

You are trying to overhear a juicy conversation, but from your distance of 24.0 m , it sounds like only an average whisper of 20.0 dB . So you decide to move closer to give the conversation a sound level of 65.0 dB instead.

Part A

How close should you come?

1331.28

SubmitMy AnswersGive Up

Incorrect; Try Again; 4 attempts remaining

Explanation / Answer

Intensity and distance follows inverse sqaure law

I is directly proportional to 1/d^2

I1/I2 = (d2/d1)^2

20/65 = (d2/24)^2

d2 = 13.31 m

i also got the same same answer. this is the only formula to be used as far as my knowledge is concerned

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