Question

Workers around jet aircraft typically wear protective devices over their ears. Assume that the sound level of a jet airplane engine, at a distance of $30 \mathrm{m},$ is 140 $\mathrm{dB}$ , and that the average human ear has an effective radius of $2.0 \mathrm{cm} .$ What would be the power intercepted by an unprotected ear at a distance of 30 $\mathrm{m}$ from a jet airplane engine?

          Workers around jet aircraft typically wear protective devices over their ears. Assume that the sound level of a jet airplane engine, at a distance of $30 \mathrm{m},$ is 140 $\mathrm{dB}$ , and
that the average human ear has an effective radius of $2.0 \mathrm{cm} .$ What would be the power intercepted by an unprotected ear at a distance of 30 $\mathrm{m}$ from a jet airplane engine?

Added by Joseph B.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Sri K

05/13/2022

Step 1

Given: Sound level of jet airplane engine = 140 dB Distance from jet airplane engine = 30 m We know that the sound level in decibels (dB) is given by the formula: \[ \text{Sound level (dB)} = 10 \log_{10} \left( \frac{I}{I_0} \right) \] where: $ I $ is the Show more…

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Workers around jet aircraft typically wear protective devices over their ears. Assume that the sound level of a jet airplane engine, at a distance of $30 \mathrm{m},$ is 140 $\mathrm{dB}$ , and that the average human ear has an effective radius of $2.0 \mathrm{cm} .$ What would be the power intercepted by an unprotected ear at a distance of 30 $\mathrm{m}$ from a jet airplane engine?