The transverse displacement of a stretched rope at t=0 is given (in SI units) by
y(x,0)=0.040sin(6πx)
where x is in metres and y in metres.
a. (i) Find the amplitude and the wavelength of the travelling wave.
b. (ii) The wave propagates along the +x-direction with a speed of 18m/s. Calculate its period and frequency.