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16.4 Exercise 9

Avg difficulty 2.5

The low-frequency speaker of a stereo set has a surface area of A=0.05m2A = 0.05 \text{m}^{2} and produces 1 W of acoustical power. (a) What is the intensity at the speaker? (b) If the speaker projects sound uniformly in all directions, at what distance from the speaker is the intensity 0.1W/m20.1 \text{W}/\text{m}^{2}?

OpenStax University Physics Volume 1, 16.4 Energy and Power of a Wave, exercise 9

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Adapted from University Physics Volume 1 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 1. Imported at revision db44eb9.