# A source of sound (1140 Hz) emits uniformly in all directions. An observer 3.09 m from the source...

## Question:

A source of sound (1140 Hz) emits uniformly in all directions. An observer 3.09 m from the source measures a sound level of 38.2 dB. Calculate the average power output of the source.

## Loudness Level of Sound:

The intensity of a sound is compared for its loudness level with respect to the threshold of frequency which is audible to human ear. The comparison is done in logarithmic scale called as decibel scale.

## Answer and Explanation: 1

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View this answer**Given Data**

- sound level measured by an observer at a point, {eq}\beta\ = 38.2\ dB{/eq}

- Distance of observer from the source of sound,
*d*= 3.09 m

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Chapter 6 / Lesson 42Sound is a form of energy that moves through the air. Discover how sound travels as a wave, understand how changes to the wave create sound's loudness and pitch, and explore how different surfaces and materials affect sound, creating echoes and distortion.

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