Azu asked in Science & MathematicsPhysics · 3 weeks ago

At a recent rock concert, a dB meter registered 128 dB when placed 1.10 m in front of a loudspeaker on the stage.?

(a) What was the power output of the speaker, assuming a hemispherical radiation of the sound and neglecting absorption in the air?

Incorrect: Your answer is incorrect.

 W

(b) How far away would the intensity level be a somewhat reasonable 85 dB?

 m

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