jim halves the distance between himself and a sound source. What is the change of decibels of the sound he hears?
1 answer:
Answer:
6.02dB
Explanation:
The sound level intensity can be calculated by using the formula:
where Io is the threshold of human hearing, and I is the intensity of the sound in at a certain distance. I is given by
where P is the power of the source and r is the distance to the source. By replacing I in the expression for I(dB) we obtain
when jim halves the distance we have r'=1/2r:
Hence, the change o decibels is:
hope this helps!!
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