Given a 20 MHz uniform plane wave with F = (6a j2a, Je # A/m assume propagation in a lossless medium characterized by ε = 5 and an unknown λ. Find the wavelength (λ), the velocity of propagation (Vp), the relative permeability (μ), and the intrinsic impedance (Z). (b) Determine the E field at t = 20 ns.