Q4. Sound is detected when a sound wave causes the eardrum to vibrate. Typically, the diameter of this membrane is about 8.4 mm in humans. (a) How much energy is delivered to the eardrum each second when someone whispers (20 dB) a secret in your ear? (b) To comprehend how sensitive the ear is to very small amounts of energy, calculate how fast a typical 2 mg mosquito would have to fly (in mm/s) to have this amount of kinetic energy.

Q4. Sound is detected when a sound wave causes the eardrum to vibrate. Typically, the diameter of this membrane is about 8.4 mm in humans. (a) How much energy is delivered to the eardrum each second when someone whispers (20 dB) a secret in your ear? (b) To comprehend how sensitive the ear is to very small amounts of energy, calculate how fast a typical 2 mg mosquito would have to fly (in mm/s) to have this amount of kinetic energy.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter17: Sound Waves

Section: Chapter Questions

Problem 17.31P: A family ice show is held at an enclosed arena. The skaters perform to music with level 80.0 dB....

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