Question 2 (7 marks) A travelling transverse wave moving along a string is described by the equation: y(x,t) =4.2 sin 0.20xx+40mt -~, where x and y are in cm and t is in s. a) Determine, the i) wavelength of the wave, ii) period of the wave, and iii) velocity of the wave. b) Draw a graph showing the shape of the travelling wave at time t = 0.0 s. a) i) Wavelength: a) ii) Period: a) iii) Wave velocity: 2 b) Snapshot graph at t = 0.0 s: y (cm) x (cm) 3