The displacement of a transverse wave travelling along a rope is described by
y(x,t)=0.05sin(40x−60t),
where x is measured in centimetres and t in milliseconds.
Answer the following questions:
a. (i) Rewrite the wave equation so that x is expressed in metres and t in seconds while keeping the numerical coefficient of the sine argument correct.
b. (ii) From your rewritten equation, obtain the numerical values of the wavelength, frequency and wave speed in SI units.