题目
题目

MUF0122 Physics Unit 2 - Semester 2, 2025

数值题

A loudspeaker emits sound uniformly in all directions with a power output of 1715.8 watts. What is the sound intensity at a distance of 5.3 meters from the loudspeaker?

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标准答案
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思路分析
To determine the sound intensity at a distance from a point source, use the formula I = P / (4πr^2), where P is the power output and r is the distance. First, compute the square of the dis......Login to view full explanation

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If a particular sound S1 is 5 times more intense than another sound S2, then what is the difference in sound intensity levels in dB for these two sounds?  

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