Question

If source of sound wave with energy 50 watt send of wave to a surrounding homogeneous media around her. So, how much is the wave intensity at distance 10 m from source ?

Answer 1

Is known
P = 50 Watt
r  = 10 m
Asked
I...?
Answer
I = P/A
I = P/4πr²
I = 50/4π10²
I = 4 x 10⁻² W/m²