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OpenStudy (anonymous):
A 49dB sound wave strikes an eardrum whose area is 5.0×10−5m2 . How much energy is received by the eardrum per second?
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OpenStudy (anonymous):
I got 4.0X10^(-12) for P using the equation B = 10log(I/I_0)
OpenStudy (anonymous):
But how do I find how much energy is received by the eardrum per second?
OpenStudy (anonymous):
How does the area factor in?
OpenStudy (anonymous):
Energy per second is basically power. Power is intensity times area.
OpenStudy (anonymous):
I'm sorry, I didn't put it up, the second part I'm trying to answer is "At this rate, how long would it take your eardrum to receive a total energy of 5.0J ?"
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