A transverse wave on a string travels in the negative y-direction at a speed of 40.0 cm/s....

A transverse wave on a string travels in the negative y-direction at a speed of 40.0 cm/s. Figure P.2.15 is a graph of ψ versus t showing how a point on the rope at y = 0 oscillates, (a) Determine the wave's period, (b) What is the frequency of the wave? (b) What is the wavelength of the wave? (d) Sketch the profile of the wave ((ψ versus y).

Figure P.2.15