Multiple Choice
The speed of sound in air is 340 m/s, and the density of air is 1.2 kg/m3.If the displacement amplitude of a 440-Hz sound wave is 10 µm, what is its pressure-variation amplitude?
A) 1.8 Pa
B) 3.3 Pa
C) 11 Pa
D) 15 Pa
E) 28 Pa
Correct Answer:

Verified
Correct Answer:
Verified
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