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The hearing aid picks up sound having a frequency of 250 hz

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Question: A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 33.2 dB. The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 2.50 10-11 W/m2. What is the intensity delivered to the eardrum?

Reference no: EM13594302

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