Homework Help: college

Posted by jim on Thursday, March 11, 2010 at 10:45pm.

You are trying to overhear a juicy conversation, but from your distance of 16.0 , it sounds like only an average whisper of 20.0 . So you decide to move closer to give the conversation a sound level of 65.0 instead.

How close should you come?

physical science? - Ms. Sue, Thursday, March 11, 2010 at 10:47pm
Your school subject is NOT college.
college - drwls, Thursday, March 11, 2010 at 11:03pm
You need to include the dimensions of the numbers you are quoting. Is the distance in meters? Is the sound level in decibels? Whatever it is, say so.

A 45 dB increase in sound level is a factor of
10^4.5 = 31,620
increase in sound power per area.

Use the inverse square law to see how close you have to get

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