Finding frequency wave number amplitude of B and writing expressions for B and E 3-7 Optics

Optics 4th/5th Edition Problem 3-7
Eugene Hecht
A 550-nm harmonic EM-wave whose electric field is in the z- direction is traveling in they-direction in vacuum. (a) What is the frequency of the wave? (b) Determine both wand k for this wave. (c) If the electric field amplitude is 600 V/m, what is the amplitude of the magnetic field? (d) Write an expression for both E(t) and B(t) given that each is zero at x = 0 and t = 0. Put in all the appropriate units.