Question 1124982
The loudness of sound is measured in units called decibels.
 The decibel rating of a sound is given by
{{{D(I) = 10*log(I/Io)}}} 
Where I is the intensity of the sound.
 and Io is the minimum intensity detectable by the human ear (the so-called threshold sound).
 Find the decibel rating, round answers to the nearest whole number. 
Whisper, 115Io 
:
Io = the threshold of sound is {{{10^(-12)}}} W/m^2 (watts per square meter)
:
Since Io is in the numerator and denominator it's just:
{{{D(I) = 10*log(115)}}}
D(I) = 10*2.06
D(I) = 20 db