A certain transverse sinusoidal wave of wavelength 20 cm is moving in the positive direction of an

Question:

A certain transverse sinusoidal wave of wavelength 20 cm is moving in the positive direction of an x axis. The transverse velocity of the particle at x = 0 as a function of time is shown in Figure, where the scale of the vertical axis is set by us = 5.0 cm/s. What are the

(a) Wave speed,

(b) Amplitude, and

(d) Sketch the wave between x = 0 and x = 20cm at t = 2.0s?