Question

A sinusoidal electromagnetic wave propagates in a vacuum in the positive x-direction. The B⃗ field oscillates in the z-direction. The wavelength of the wave is 30 nm and the amplitude of the B⃗ field oscillations is 1.0 × 10−2 T.

Part A Part complete What is the amplitude of the E⃗ field oscillations? Express your answer with the appropriate units. Emax = 3.0×106 NC

Part B Part complete Select the correct equation that describes the B⃗ field of the wave as a function of time and location. Bz=(3.0×106T)cos[2π(t1.0×10−16s−x3.0×10−8m)] Bz=(3.0×106T)cos[t1.0×10−16s−x3.0×10−8m] Bz=(1.0×10−2T)cos[2π(t1.0×10−16s+x3.0×10−8m)] Bz=(1.0×10−2T)cos[2π(t1.0×10−16s−x3.0×10−8m)]

Correct Part C Part complete Select the correct equation that describes the E⃗ field of the wave as a function of time and location. Ey=(3.0×106N/C)cos[2π(t1.0×10−16s+x3.0×10−8m)] Ey=(3.0×106N/C)cos[2π(t1.0×10−16s−x3.0×10−8m)] Ey=(1.0×10−2N/C)cos[2π(t1.0×10−16s−x3.0×10−8m)] Ey=(1.0×10−2N/C)cos[t1.0×10−16s−x3.0×10−8m]

*****I only need the last question:

I don't understand these terms. what justifies far?:

What type of electromagnetic radiation is this?

A)near-field radiation

B)far-field radiation

Review 1 Constants l ▼ Part A Periodic Table A sinusoidal propagates in a vacuum in the positive -direction. The B field oscillates in the z-direction. The wavelength of the wave is 30 nm and the amplitude of the B field oscillations is 1.0 x 10-T. etic wave What is the amplitude of the É field oscillations? Express your answer with the appropriate units. Emax 3.0x106 N. Previous Answers Correct ▼ Part B Select the correct equation that describes the B field of the wave as a function of time B,-(3.0 × 106 T)cos|2x i) 1.0 x 10 16 3.0 x 10m Bz-(3.0 x 106 T)cos!1.0x10-T,-30x10-3m 1.0× 10-10 s 3.0 × 10- m 1.0×10-1 s 3.0 × 10-8 m

Answer 1

Near Field dunFar Field diu ② Higneunerdj Louw voltage . Medium Field lecaude ex ert echic and ratredic sidd Pmeent