Asked by Piyanshu
A loudspeaker emits energy equally in all directions at the rate of 1.75J/s. What is the intensity level at a distance of 15 m?
Answers
Answered by
Damon
surface area of sphere = 4 pi r^2
Watts/unit area at 15 m = 1.75/(4*pi*225)
Watts/unit area at 15 m = 1.75/(4*pi*225)
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