Answer:
[tex]5.07\times 10^{-5}\ W[/tex]
0.003042 J
Explanation:
I = Hearing intensity = [tex]1\ W/m^2[/tex]
A = Area = [tex]5.07\times 10^{-5}\ m^2[/tex]
Power is given by
[tex]P=IA\\\Rightarrow P=1\times 5.07\times 10^{-5}\\\Rightarrow P_p=5.07\times 10^{-5}\ W[/tex]
The power which causes pain is [tex]5.07\times 10^{-5}\ W[/tex]
t = Time the eardrum is exposed to sound = 1 min = 60 s
Energy is given by
[tex]E=Pt\\\Rightarrow E=5.07\times 10^{-5}\times 60\\\Rightarrow E=0.003042\ J[/tex]
The energy transfered to the eardrum is 0.003042 J
