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Aleks04 [339]
4 years ago
5

The intensity of the sound of a subway train was measured at 108 dB. Find the intensity in W/m2. (Give your answer in scientific

notation, correct to one decimal place.)
Mathematics
1 answer:
agasfer [191]4 years ago
6 0

Answer:

I = 0.0631 W/m²

Step-by-step explanation:

Value in Decibel = 10 Log \frac{I}{10^{-12} }

108 / 10 = Log \frac{I}{10^{-12} }

10.8 = Log \frac{I}{10^{-12} }

\frac{I}{10^{-12} } = 10^{10.8}

I =  10^{10.8} x 10^{-12}

I = 0.0631 W/m²

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