Chapter 5.4, Problem 131AYU

To determine

The loudness of the heavy city traffic in decibels, if the intensity of the sound is $x={10}^{-3}$ watt per square meter, where loudness $L\left(x\right)$ is given by $L\left(x\right)=10\log \frac{x}{I_0}$, where $x$ is the intensity of sound measured in watts per square meter, and $I_0={10}^{-12}$ watt per square meter is the least intense sound that human ear can detect.