Answer:
99 dB
Explanation:
We have given that sound intensity with a damaged muffler =8× [tex]10^{-3}[/tex]
we have to find the intensity level of the this sound in decibels
for calculating in decibels we have to use the formula
β=[tex]10log\frac{I}{I_0}[/tex]
=[tex]10log\frac{.008}{10^{-12}}[/tex]
=10 log8+10 log[tex]10^{9}[/tex]
=10 log8+90 log10
=10×0.9030+90
=99 dB
