What is the decibel level of a dog barking with intensity 10−5 watts per square inch? Use a logarithmic model to solve.

Answer:
70 dB
Step-by-step explanation:
D=10log(I10−12)
Substitute in the intensity level, I, and then simplify to find
DD=10log(10−510−12)=10log(107).
Since log107=7, simplify to find
DD=10⋅7=70.
The decibel level is 70dB.