Physics Intensity level of Sound Question (Easy)? *10POINTS*!!
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Physics Intensity level of Sound Question (Easy)? *10POINTS*!!

[From: ] [author: ] [Date: 13-08-11] [Hit: ]
level of 39dB. The rooster wakes up the farmer’s cow,“mooing” at an intensity level of 37dB.made by the rooster and the cow?39dB => P = 10^3.37dB => P = 10^3.......
I've had alot of trouble solving this question. if anyone can explain how to solve it with steps and explanations that would be amazing!! Thank you!

A farmer is awakened by the “cock-a-doodle-doo” of a rooster, which has an intensity
level of 39dB. The rooster wakes up the farmer’s cow, causing the cow to start
“mooing” at an intensity level of 37dB. What is the total intensity level of the noise
made by the rooster and the cow?

-
dB = 10*log(base10)P

so P = 10^(dB/10)

39dB => P = 10^3.9 = 7943

37dB => P = 10^3.7 = 5012

Total P = 12955

Convert back to dB = 10*log(12955) = 41 dB
(2 s.f.)
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