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lemondedeninaug

Answered question

2022-09-03

Sound waves from a stereo have a power output of 3.5 W at 0.50 m. What is the sound's intensity?

Andrejkoxg

Beginner2022-09-04Added 20 answers

Given data:
P=3.5W
r=0.50m
First, we will assume that intensity is given by the following equation:

I = \frac{P}{4 π r^{2}}

I-intensity P-power r-radius of the surface
Next, we will put known values into the previous equation and calculate it:

I = \frac{3.5 W}{4 π (0.50 m)^{2}}

= 1.1 W / m^{2}

Result:

I = 1.1 W / m^{2}

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