At time t = 0 and at position x = 0 m along a string, a rightward (+x dir) travelling sinusoidal wave with frequency of 230 Hz has displacement y = +4.8 mm and transverse velocity vy = -0.75 m/s.
What is the smallest positive phase angle?
What is the amplitude of the wave?
How long does an observer at x=0 need to wait before a trough (y=-A) arrives?
The Attempt at a Solution
For some reason this answer is incorrect and I dont know why since I used in my calculation of part B which is correct.
Not sure how to approach part c...
As always thanks for the help