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A Certain Glass Window Reduces the Intensity Level of the Sound

Question 65

Multiple Choice

A certain glass window reduces the intensity level of the sound from 72 dB to 47 dB.By what factor is the acoustic power reduced by this glass window?


A) 3.2 × 10-3
B) 2.2 × 10-2
C) 5.6 × 10-2
D) 1.0 × 10-1
E) 1.5 × 10-1

Correct Answer:

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