Question

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 m, what is the intensity of the wave?
A) 0.16 W/m2
B) 0.32 W/m2
C) 12 W/m2
D) 16 W/m2
E) 32 W/m2

Answer

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