Question

The sound intensity at the ear of passenger in a car with a damaged muffler is 8.0 × 10-3 W/m2. What is the intensity level of this sound in decibels? Use the threshold of hearing (1.0 × 10-12 W/m2) as the refere

Answer 1

99 dB

Step-by-step explanation:

We have given that sound intensity with a damaged muffler =8×
`10^(-3)`

we have to find the intensity level of the this sound in decibels

for calculating in decibels we have to use the formula

β=
`10log(I)/(I_0)`

=
`10log(.008)/(10^(-12))`

=10 log8+10 log
`10^(9)`

=10 log8+90 log10

=10×0.9030+90

=99 dB