A y polarized UPW motion in + x direction in free space has a maximum value of 20 (V/m) at a point x=1.5 (m) with the next adjacent minimum at x=2.75 (m) at time t=0 Obtain the wavelength and the frequency of the wave. Determine E0 and write an expression for E(x,t) At time t=0, sketch the electric field, Ey vs.(x) and Ey vs.(beta0x) At time t=10ns, sketch the electric field. Ey vs.(x)