Answered: 1) Loudspeakers can produce intense… | bartleby

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1) Loudspeakers can produce intense sounds with surprisingly
small energy input in spite of their low efficiencies.
Calculate the power input needed to produce a 90.0-dB
sound intensity level for a 12.0-cm-diameter speaker that
has an efficiency of 100%. (This value is the sound
intensity level right at the speaker.)

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