Question

*@ will 65% € 9:57 AM c O_Doc Dec 09 2... @ : There exists a plane electromagnetic wave in vacuum whose electric field is totally described by: Ē --(100V/m)isid [+(3.040x10"")] V-26 Ws3-04E15 1) What is the wavelength of the wave? . C=3E8 (af 211 for 9.68EL ( a-3.1E-im 2) What is the direction of travel and the polarization direction of the wave? traveling to the left C C & Boto - 21 3) What is the magnitude and direction of the magnetic field, B, at the point (Imm, 0,0) at to? Bo= 1000m 358 Bp-3.33€ 1 k-2.02E7) B=(3,33€-1) [(: (12.02€ 73•3%) +0] B-2.42E- in th direction since E was in (-) ? direction

Answer 1

1.

1013 + 3 . 04 = اید

w = 271

So,

f = 4.84 * 1014-1

and

A = 1

A=" 3* 103 4.84* 101a = 0.2 * 10'm = 620nm

2.

In negative y-axis

3.

at t=0

E = 100 sin(ky +3.04 * 1015+)

as y = 0 and t = 0

E = 0

so, B = 0