# Thread: Find the level of sound

1. ## Find the level of sound

the level of sound B in decibels with an intensity of I is B=10log(I/I0) where I0=10^-12 watt/m^2, correspondingly roughly to the faintest sound that can be heard by the human ear. Find the level of sound B of a snowmobile with I=10^-2 watt/m^2.

2. Originally Posted by VNVeteran
the level of sound B in decibels with an intensity of I is B=10log(I/I0) where I0=10^-12 watt/m^2, correspondingly roughly to the faintest sound that can be heard by the human ear. Find the level of sound B of a snowmobile with I=10^-2 watt/m^2.
$B=10\ log(\frac{I}{I_0})$

$B=10\ log(\frac{10^-2}{10^{-12}})$

$B=10\ log(10^{10})$

$B=10*10$

$B=100\ decibels$