A sound source radiates sound uniformly in all directions.The intensity of the sound at a distance of 100 m is 1.00 $\times$ 10^-4 W/m².The power of the sound source is A) 12.6 W. B) 16.2 W. C) 20.4 W. D) 24.5 W. E) 30.6 W.

Question

Quizplus · Accepted Answer

The intensity (I) is given by the formula I = P / (4πr²), where P is the power and r is the distance. Rearranging for P gives P = I * 4πr². Substituting I = 1.00 * 10^-4 W/m² and r = 100 m, we get P = 1.00 * 10^-4 * 4π * (100)² = 12.6 W.

A Sound Source Radiates Sound Uniformly in All Directions ×\times× 10-4 W/m2

A Sound Source Radiates Sound Uniformly in All Directions $\times$ 10^-4 W/m²