# The source of a sound wave has a power of 1.30 muW. Assume it is a point source. (a) What is the...

## Question:

The source of a sound wave has a power of 1.30 {eq}\mu {/eq}W. Assume it is a point source.

(a) What is the intensity 6.80 m away?

(b) What is the sound level at that distance?

## Intensity:

The intensity is the measure of the number of photons propagating through a unit solid angle per unit time. The intensity means how powerful the wave, and how much energy is radiated through a unit area.

## Answer and Explanation: 1

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**Given data**

- The power of sound wave is: {eq}P=1.3\;\mu\mathrm{W}=1.3\times 10^{-6}\;\mathrm{W} {/eq}

- The threshold intensity of the wave is:...

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Chapter 1 / Lesson 14Explore the fascinating world of sound waves to discover what it is people really hear. Investigate how sound waves move through matter and how different vibration speeds create different sounds. Finally, learn why sound waves are important.

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