12.47 Human Hearing

A fan at a rock concert is 50.0 m from the stage, and at this point the sound intensity level is 107 dB. Sound is detected when a sound wave causes the tympanicmembrane (the eardrum) to vibrate . Typically, the diameter of this membrane is about 8.40 mm in humans

How much energy is transferred to her eardrums each second ?

How fast would a 2.00 mg mosquito have to fly to have this much kinetic energy?


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