A transverse wave of frequency 40 Hz propagates down a string. Two points 5 cm apart are out of phase by p/6. (a) What is the wavelength of the wave? (b) At a given point, what is the phase difference between two displacements for times 5 ms apart? (c) What is the wave velocity? for a.) I use theta=(sπx)/λ solving for λ I get λ=.6m Please help me on part b and c, and check to see if I did part a correctly.