AAMC Section Bank C/P #16

[Mr. otcoD]

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I didn't understand how to even start from here. In the explanation, it says that Imax = Io * 10^8. How does 80 dB translate into that? Is there some generic formula that we are supposed to know for intensity?

 

[theonlytycrane]

The max loudness is 80dB and the min loudness is 30dB.

The relevant equation to use is dB = 10 * log10(Intensity / Io) where Io = 1*10^-12.

If you plug 80dB and 30dB into that equation, solve for each corresponding Intensity, the ratio will be 10^5.

 

[Mr. otcoD]

The max loudness is 80dB and the min loudness is 30dB.

The relevant equation to use is dB = 10 * log10(Intensity / Io) where Io = 1*10^-12.

If you plug 80dB and 30dB into that equation, solve for each corresponding Intensity, the ratio will be 10^5.

Thank you!!