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A sources of sound operates at

Question:

A sources of sound operates at $2.0 \mathrm{kHz}, 20 \mathrm{~W}$ emitting sound uniformly in all directions. The speed of sound in air is $340 \mathrm{~m}$ $\mathrm{s}^{-1}$ and the density of air is $1.2 \mathrm{~kg} \mathrm{~m}^{-3}$.

(a) What is the intensity at a distance of $6.0 \mathrm{~m}$ from the source?

(b) What will be the pressure amplitude at this point?

(c) What will be the displacement amplitude at this point?

Solution:

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