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An equation for loudness L in decibels is given by L = 1 0 l o g R , where R is the sound's relative

An equation for loudness

L

in decibels is given by

L = 10 l o g R,

where

R

is the sound's relative intensity. An air

-

raid siren can reach

150

decibels and jet engine noise can reach

120

decibels. How many times greater is the relative intensity of the air

-

raid siren than that of the jet engine noise?

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