- #1
coconut62
- 161
- 1
Homework Statement
Please refer to the image. Question (a).
Homework Equations
I= P/(4∏r^2)
P=E/t
The Attempt at a Solution
After a few attempts, I found the way to get the answer:
(6.3 x 10^-6) x (1.5 x 10^-4) x 60 = 5.67 x 10^-8
But I don't understand why the area of the ear canal is used, instead of the area which the energy carried by the wave passes through. From what I understand, intensity depends on the distance from the source, so how come we don't need to take into account the distance of 5.0m?