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A source emits sound uniformly in all directions. There are no reflections of the sound. At a distance of 12 m from the source, the intensity of the sound is 4.6 × 10-3 W/m2. What is the total sound power P emitted by the source?

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onyebuchinnaji

Answer:

8.325 W

Explanation:

Acoustic Power = [tex]I*4\pi *r^2[/tex]

where;

I = the intensity of the sound = 4.6 × 10⁻³ W/m²

r = distance from the source = 12 m

Acoustic Power = [tex]I*4\pi *r^2[/tex]

Acoustic Power = (4.6 × 10⁻³ W/m²) *4*3.142*(12)²

Acoustic Power = 8.325 W

Therefore, the total sound power emitted by the source is 8.325 W

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