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Q1. A transverse sinusoidal wave given by y (x, t)=ym sin (2.5x-440t+q) is traveling along
a string (x and y are in meters and in seconds). At time t=0 s and at position x = 0 m, the
wave has displacement y = +4.5 mm and transverse velocity u=-0.75 m/s. What is the
phase constant of this wave?
the answer is 69.3 degrees. please show your work
and show how you found the amplitude if needed
in the method.

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