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April 25, 2015

Homework Help: Physics

Posted by Joey on Friday, November 28, 2008 at 5:13pm.

Hi I am absolutely stumped on this question.

A loudspeaker is placed between two observers who are 110 m apart, along the line connecting them. If one observer records a sound level of 60.1 dB and the other records a sound level of 74.9 dB, how far is the speaker from each observer?

What I did for this is

I found the the Intensities of both the sound levels.
Then using the formula r1= SQRT(I2/I1)*R2

I would solve for r1 and then do r1+r2=113 to find r2.

I also dont know what value to assign for I2 and I1, i tried both ways but its wrong.

Please Help!

Thanks In Advance

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