Chapter 4.4, Problem 131AYU

Loudness of Sound Problems $129-132$ use the following discussion: The loudness $L\left(X\right)$, measured in decibels $\left(dB\right)$, of a sound of intensity $x$, measured in watts per square meter, is defined as $L\left(x\right)=10log\frac{x}{l_0}$, where $l_0={10}^{-12}$ watt per square meter is the least intense sound that a human ear can detect. Determine the loudness, in decibels, of each of the following sounds.

Heavy city traffic: intensity of $x={10}^{-3}$ watt per square meter.