At a rock concert, a dB meter registered 130 dB whenplaced 2.2 m in front of a loudspeaker on the stage, (a) Whatwas the power output of the speaker, assuming uniformspherical spreading of the sound and neglecting absorptionin the air? (b) How far away would the sound level be asomewhat reasonable 85 dB?
At a rock concert, a dB meter registered 130 dB whenplaced
Problem 16.26 Chapter 16
Physics for Scientists & Engineers with Modern Physics | 4th Edition
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