A sound wave with a power of 8.8 * 10-4 W leaves a speaker and passes through section A, which has an area of 5.0 m2. What is the intensity of sound in this area?

Question

Neveah Bullock

Physics

26 June, 10:20

A sound wave with a power of 8.8 * 10-4 W leaves a speaker and passes through section A, which has an area of 5.0 m2. What is the intensity of sound in this area?

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Mattie Moon · Answer 1

The intensity of sound is calculated by dividing the power by the total area. This can be mathematically expressed into,

I = P / A

where I is intensity, P is power, and A is area. Substituting the known values,

I = (8.8 x 10-4 W) / (5.0 m^2)

I = 1.76 x 10-4 W/m^2