= 2 у Ex В 3. The Poynting vector is defined by S = so that μ, the three vectors E, B, and S are mutually orthogonal to

[answerhappygod]

1 (129.22 KiB) Viewed 55 times

= 2 у Ex В 3. The Poynting vector is defined by S = so that μ, the three vectors E, B, and S are mutually orthogonal to each other. While, in free space, the total energy density u of the EM wave is a sum of both that of E 1 and of B fields: up = € E and Up B2 where 2μη Em and Bm are the amplitudes of sinusoidal functions of E and B fields, respectively. Show that 1 pto+T ==L*** S(x,t)dt =c{up + ub}avg B: T to LBM, 2 E = = m m т B х 1 = Savg Te = UB