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(Solved): A loudspeaker, mounted on a tall pole, is engineered to emit 0.8% of its sound energy into the forwa ...



A loudspeaker, mounted on a tall pole, is engineered to emit

0.8%

of its sound energy into the forward hemisphere,

99.2%

toward the back. You measure an 86 dB sound intensity level when standing 2.8 m in front of and 2.9 m below the speaker. What is the speaker's power output?

P=,W


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