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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?

Respuesta :

BlueSky06
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

Answer:

The other one is correct but on Edge. it is A.

Explanation:

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? (Intensity = I = )

A) 1.8 × 10–4 W/m2 <------ This one.

B) 1.8 × 10–6 W/m2  

C) 1.6 × 10–4 W/m2

D) 1.6 × 10–6 W/m2

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