Physics

Problem

Sound intensity can be analyzed with the formula:

\frac{I_2}{I_1} = 10^{\frac{L_2 - L_1}{10}}

where

I

is the intensity of the sound being measured (

\text{W}/\text{m}^2

), and

L

is the perceived loudness of the sound (dB). How many times more intense is a 40 dB sound than a 20 dB sound? A. 2 B. 20 C. 100 D. 1000