A 2 GHz uniform plane wave has an amplitude E_y0 = 1.4 kV/m at (0, 0, 0, t = 0) and is propagating in the a_z direction in a medium where ∈" = 1.6 × 10⁻¹¹ F/m, ∈' = 3.0 × 10⁻¹¹ F/m, and μ = 2.5 μH/m. Find

(a) E_y at P(0, 0, 1.8 cm) at 0.2 ns;

(b) H_x at P at 0.2 ns.