Question

The magnetic field of an electromagnetic wave is given by

B(y,t) = (7.10 x 10-5) sin(ky - 3.42 x 1015t) х

where B is measured in Tesla, x in meters, and t in seconds.

a) What is the wavelength of the wave? Enter your answer in nm.

b) What is the frequency (not the angular frequency) of the wave? Enter your answer in THz (terra-hertz), where 1 THz = 10¹² Hz.

c) What is the amplitude of the wave's electric field? Enter your answer in V/m.

d) What is the average intensity of the wave? Enter your answer in watts/m².

Answer 1

B (Y, 6-) - (7-1X 10–6) Sèm (hy – 3-42.21068) * Bo Sim (My wt) Comparing both the conation, Boy at 18 1887. 3.42 x 10 ez 3x10 m/s. 16 read free speed of GR wwe is z 2 QC 21e 10ls W 2 at wavelength, . 2X3. 14 x 3 x 108 25.61*10- 3.42 x 1015 551 10 -9m 591mm. auf freemoney, f 3.42x 10 2x3.14. 5.44 4 1014 HZ 5.44810² THE E = amplitude of electrie feed & a exe = 3 x 108 x 71 x 186 2:13 x 103 v/m. Average internity of the wave, 2 2 the 4 x 3 + 14 x 10 I= 6.02 x 103 w/m Eo Bo ze, IE? 2 14(2-13 x 10372 x 10 tx 3x108 2.