Repeal Problem for a wave traveling in a lossy medium in whichE = 100e–20y cos(2π × 109t...

Repeal Problem for a wave traveling in a lossy medium in which

E = 100e–20y cos(2π × 109t − 40y) (V/m),

H = – 0.64e–20y cos(2π × 109t − 40y − 36.85°)(A/m).

The box has dimensions a = 1 cm, b = 2 cm, and c = 0.5 cm.

Problem

Consider the imaginary rectangular box shown in Figure

(a) Determine the net power flux P(t) entering the box due to a plane wave in air given by

E = Eo cos(ωt – ky) (V/m).

(b) Determine the net lime-average power entering the box.

Figure

Imaginary Rectangular Box of Problem