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A Sound Source Emits 20

Question 4

Multiple Choice

A sound source emits 20.0 W of acoustical power spread equally in all directions.The threshold of hearing is A sound source emits 20.0 W of acoustical power spread equally in all directions.The threshold of hearing is .What is the sound intensity level 30.0 m from the source? A) 92.5 dB B) 81.5 dB C) 1.77 × 10<sup>-3</sup> dB D) 1.77 × 10<sup>-3</sup> W E) -27.5 dB .What is the sound intensity level 30.0 m from the source?


A) 92.5 dB
B) 81.5 dB
C) 1.77 × 10-3 dB
D) 1.77 × 10-3 W
E) -27.5 dB

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