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Waves and Sounds

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Sound Level Intensity of a Mosquito

WAVES-3FPVSX

The buzzing from a mosquito causes your eardrum to vibrate. How fast does the $2\times 10^{-6}kg$ mosquito have to fly to have the kinetic energy in one second necessary to produce a sound level intensity of 82 dB?

The average radius of a human eardrum is $4.2\times {10}^{-3}m$.

A

$2.9 \frac{m}{s}$

B

$8.7\times{10}^{-3}\frac{m}{s}$

C

$93.7\times{10}^{-3}\frac{m}{s}$

D

$1.6\times { 10 }^{ -4 }\frac { m }{ s }$