Question 115625This question is from textbook Fund of Alg and Trig
: This is another word problem that I am stuck on. I don't even know where to began to set this one up.
A sound intensity level of 140 decibles produces pain in the avg human ear. Aprox how many times greater that Io (o being the base) must (I) be in order to reach this level?
-Thanks
This question is from textbook Fund of Alg and Trig
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A sound intensity level of 140 decibles produces pain in the avg human ear. Aprox how many times greater that Io (o being the base) must (I) be in order to reach this level?
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dB = 10log[I/Io]
140 = 10log[I/Io)
14 = log[I/Io]
10^14 = I/Io
I = (10^14)Io
I = 100,000,000,000,000 Io
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Cheers,
Stan H.
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