Question

A 49dB sound wave strikes an eardrum whose area is 5.0×10−5m2 . How much energy is received by the eardrum per second?

Answer 1

I got 4.0X10^(-12) for P using the equation B = 10log(I/I_0)

Answer 2

But how do I find how much energy is received by the eardrum per second?

Answer 3

How does the area factor in?

Answer 4

Energy per second is basically power.

Power is intensity times area.

Answer 5

I'm sorry, I didn't put it up, the second part I'm trying to answer is "At this rate, how long would it take your eardrum to receive a total energy of 5.0J ?"