The following data give the displacement of points along a rope at an instant during the passage of a transverse wave:
(a) Position x (cm): 0 1 2 3 4
(b) Displacement y (cm): 0 3 0 -3 0
(c) (a) What is the amplitude of the wave?
(d) (b) What is the wavelength of the wave?
(e) (c) If the wave travels at 12m/s, find its frequency.