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masya89 [10]
3 years ago
13

What is the intensity level of a sound with an intensity of 0.000127 W/m2?

Physics
1 answer:
irina1246 [14]3 years ago
6 0
DB = 10 log (I/Io)
Where, Io is the reference intensity which is the minimum intensity that human can hear.
That is; Io = 10^-12
Therefore; 
dB = 10 log (0.000127/10^-12) =80.79
     = 81 dB
Therefore; the correct answer is 81 dB
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