Determine the power output of the speaker

Reference no: EM13656952

At a recent rock concert, a dB meter registered 122 dB when placed 2.20 m in front of a loudspeaker on the stage.

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

----------W

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

-----------m

Reference no: EM13656952

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