A very loud train whistle has an acoustic power output of 100 W. If the sound energy spreads out spherically, what is the intensity level in dB at a distance of 100 meters from the train? (lo = 10-12 W/m2) A 89.0 dB B 95.0 dB 81.6 dB D 78.3 dB

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Chapter1: Units, Trigonometry. And Vectors
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A very loud train whistle has an acoustic power output of 100 W. If the sound energy spreads out
spherically, what is the intensity level in dB at a distance of 100 meters from the train? (lo =
W/m2)
10-12
A 89.0 dB
B 95.0 dB
81.6 dB
D 78.3 dB
Transcribed Image Text:A very loud train whistle has an acoustic power output of 100 W. If the sound energy spreads out spherically, what is the intensity level in dB at a distance of 100 meters from the train? (lo = W/m2) 10-12 A 89.0 dB B 95.0 dB 81.6 dB D 78.3 dB
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