Question
(a) What is the intensity in watts per meter squared of a just barely audible 200-Hz sound? (b) What is the intensity in watts per meter squared of a barely audible 4000-Hz sound?
1. $1.58 \times 10^{-10} \textrm{ W/m}^2$
2. $1.58 \times 10^{-13} \textrm{ W/m}^2$
Solution Video