Answer: Two sinusoidal waves, identical except for phase,
Chapter , Problem 67(choose chapter or problem)
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y' (x, t) = (3.0 mm) sin(20x - 4.0t + 0.820 rad), with x in meters and t in seconds. What are (a) the wavelength A of the two waves, (b) the phase difference between them, and (c) their amplitude Ym?
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