physics
posted by Anonymous
Posted by Anonymous on Tuesday, December 2, 2008 at 12:43am.
A loudspeaker is placed between two observers who are 114 m apart, along the line connecting them. If one observer records a sound level of 61.6 dB and the other records a sound level of 81.3 dB, how far is the speaker from each observer?
Responses
physics  drwls, Tuesday, December 2, 2008 at 2:14am
Get the intensity ratio from the decibel difference, and apply the inverse square law so that the ratio of distances squared are the inverse ratio of the intensities.
physics  HELP  Anonymous, Tuesday, December 2, 2008 at 11:17am
intensity ratio = 19.7dB
I=1/r^2
r^2 = 1/19.7
r = .225m
this doesn't make sense
what am i doing wrong?
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