Question

The intensity of sound made by a jet engine from 100 feet away is 100.5 watts per square meter.Find the decibel level given that lo=10-¹2.O 13O 125O 11O 115

Answer 1

`\begin{gathered} D=10log((I)/(Io)) \\ \\ D=10log(\frac{10^(0.5)}{10^{\text{ -12}\frac{}{}}}) \\ \\ D=10log(10^(11.5)) \\ D=10(11.5)=115 \end{gathered}`

The answer would be 115