Sound Intensity Video Lessons

Concept

# Problem: Sound is detected when a sound wave causes the eardrum to vibrate. Typically, the diameter of the eardrum is about 8.4 mm in humans. When someone speaks to you in a normal tone of voice, the sound intensity at your ear is approximately 1.0x10-6 W/m2Part A What is the power delivered to your eardrum? Express your answer using two significant figures

###### FREE Expert Solution

Power:

$\overline{)\begin{array}{rcl}{\mathbf{P}}& {\mathbf{=}}& {\mathbf{IA}}\\ & {\mathbf{=}}& \mathbf{I\pi }{\mathbf{r}}^{\mathbf{2}}\end{array}}$

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###### Problem Details

Sound is detected when a sound wave causes the eardrum to vibrate. Typically, the diameter of the eardrum is about 8.4 mm in humans. When someone speaks to you in a normal tone of voice, the sound intensity at your ear is approximately 1.0x10-6 W/m2

Part A What is the power delivered to your eardrum? Express your answer using two significant figures

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