Question

A jet plane emits 5.0 x 10^5 j of sound energy per second. what is the sound level 25 m away?

Answer 1

The correct answer is 66.99dB

I=5×10−6Wm−2;Io=1×10−12W.m−2

The sound intensity level in

dBis :(10dB)log10(5×10−6Wm−21×10−12Wm−2)=66.99dB

What is Threshold of Hearing.?

Humans can hear sounds in such a wide range of intensities ( spans 13 orders of magnitude). The Threshold of Hearing is the level at which even the tiniest sound becomes heard.

We should develop a scale to quantify sound intensity that falls between 0 and 100 because it is challenging to develop intuition for numbers in such a wide range. That is the decibel scale's intended use (dB).

The dB scale is based on logarithmic scaling since it has the property of taking big numbers and returning small numbers. This scale is set up so that the sound intensity at the Threshold of Hearing is equal to zero.

learn more about Threshold of Hearing refer:

https://brainly.com/question/14918653

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