Energy Absorbed by Ear from 95-dB Sound Wave

AI Thread Summary
A 95-dB sound wave impacts an eardrum with an area of 5.0 x 10¯5 m², prompting a calculation of the energy absorbed per second. To find this, the decibel level is converted to intensity using a logarithmic equation. Intensity is defined as power divided by area, measured in watts per meter squared. The discussion clarifies that "energy per second" equates to power, aiding in understanding the calculation process. Overall, the conversation emphasizes the relationship between sound intensity, power, and area in determining energy absorption by the eardrum.
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A 95-dB sound wave strikes an eardrum whose area is 5.0 x 10¯5 m². How much energy is absorbed by the eardrum per second? ...been stuck on this question for so long.
 
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First, convert decibels to "intensity" using that equation with the "log" in it. Intensity equals power divided by area, measured in "watts per meter squared."

Your answer, "energy per second" is the same thing as power.
 
thanks a lot! i get it now =)
 

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