Multiple Choice
A very loud train whistle has an acoustic power output of 80 W.If the sound energy spreads out spherically,what is the intensity level in dB at a distance of 100 meters from the train? (I0 = 10−12 W/m2)
A) 78.3 dB
B) 88.0 dB
C) 92.8 dB
D) 95.0 dB
Correct Answer:
Verified
Correct Answer:
Verified
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