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 don't know what value to assign for I2 and I1, i tried both ways but its wrong.
Please Help!
Thanks In Advance

Physics  drwls, Friday, November 28, 2008 at 6:15pm
This is the fourth time you have posted this question, which has already been answered. Please stop

Physics  drwls, Saturday, November 29, 2008 at 2:17am
There was a typo error in my previous answer, which you noticed. The final answer is the same.
In calculating the intensity ratio, I meant to write 10^1.48 = 30.2. Sorry about the typo in the exponent. The 30.2 is correct. 1.48 is 1/10 of the dB difference in received sound levels.
If it is a mystery where the 10^(0.1*dB difference)comes from, that is the definition of decibels in terms of intensity ratio
Log10(I2/I1) = 1/10 (dB2  dB1)
10^[0.1(dB2dB1)] = I2/I1
Answer This Question
Related Questions
 Physics  Hi I am absolutely stumped on this question. A loudspeaker is placed ...
 Physics  Hi I am absolutely stumped on this question. A loudspeaker is placed ...
 Physics  Hi I am absolutely stumped on this question. A loudspeaker is placed ...
 physics  A loudspeaker is placed between two observers who are 111 m apart, ...
 physics  A loudspeaker is placed between two observers who are 114 m apart, ...
 Physics HELP!!  A loudspeaker is placed between two observers who are 113m ...
 physics  Posted by Anonymous on Tuesday, December 2, 2008 at 12:43am. A ...
 math  Each of two observers 475 feet apart measures the angle of elevation to ...
 physics  A college student is at a concert and really wants to hear the music, ...
 physics  A college student is at a concert and really wants to hear the music, ...
More Related Questions