sinusoidal wave?

Question

A sinusoidal wave of frequency 550 Hz has a speed of 270 m/s.
(a) How far apart are two points that differ in phase by π/3 rad?


(b) What is the phase difference between two displacements at a certain point at times 1.00 ms apart?
rad

billrussell42 · Accepted Answer

one period of 550hz is 1000/550 or 1.82ms

π/3 is part of a period, π/3/2π = 1/6 period, or 0.303 ms

270 m/s x 0.000303 = 0.0818m

b) period is 1.82 ms. 1ms is 0.547 of the period or 0.547*2π = 3.44 rad

sinusoidal wave?

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