A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the forward hemisphere, 25% toward the back. You measure an 85dB sound intensity level when standing 3.5m in front of and 2.5m below the speaker. What is the speaker's power output?
A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the forward hemisphere, 25% toward the back. You measure an 85dB sound intensity level when standing 3.5m in front of and 2.5m below the speaker. What is the speaker's power output?
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Transcribed Image Text:A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the
forward hemisphere, 25% toward the back. You measure an 85dB sound intensity level when
standing 3.5m in front of and 2.5m below the speaker. What is the speaker's power output?
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