Question

The longitudinal displacement of a mass element in a medium as a sound wave passes through it is given by . Consider a sound wave of frequency 440 Hz and wavelength 0.75m. If sm= 12 m, how long does it take an element of air to move from a displacement of 12 m to a displacement of 0 m?
A) 0.57 ms
B) 1.1 ms
C) 2.3 ms
D) 3.4 ms
E) 4.6 ms

Answer

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