At t = 0, a snapshot of a sinusoidal wave on a rope shows a crest at x = 1.2 cm and the next crest at x = 4.4 cm. At t = 2.0 ms, the same crest is observed at x = 3.6 cm.
a. (a) Calculate the wavelength.
b. (b) Determine the speed of the wave.
c. (c) Hence find the frequency of the wave.