A linearly polarized sinusoidal electromagnetic wave moving in the positive x di
ID: 1998690 • Letter: A
Question
A linearly polarized sinusoidal electromagnetic wave moving in the positive x direction has a wavelength of 7.20 mm. The magnetic field of the wave oscillates in the xz plane and has an amplitude of 9.10 µT. The magnitude of the electric field vector for this wave can be written as E = Emax sin(kx ? ?t). What are the following?
Not sure how to get the other few?!
A linearly polarized sinusoidal electromagnetic wave moving in the positive x direction has a wavelength of 7.20 mm. The magnetic field of the wave oscillates in the xz plane and has an amplitude of 9.10 HT. The magnitude of the electric field vector for this wave can be written as E Emax sin(kx-wt). What are the following (a) the value of Emax 1500 2730 Your response differs from the correct answer by more than 10%. Double check your calculations. V/m (b) the wave number k 873 873 m (c) the angular frequency 11 2.62e+11 rad/s (d) the plane in which the electric field oscillates O the xz plane 2 th xy plane e O the yz plane (e) the average Poynting vector Express your answer in vector form S. 900z W/m2 9880i (f) the radiation pressure exerted by this wave on a perfectly reflecting lightweight solar sail 2.23e-5 6.59e- 05 Your response differs from the correct answer by more than 10%. Double check your calculations. Pa (g) the acceleration of the solar sail if its dimensions are 5.00 m x 8.00 m and its mass is 42.0 g 0.0628 190 Your response differs from the correct answer by more than 100%. m/s2Explanation / Answer
a) emax = c * bmax = 3 * 108 * 9.1 * 10-6
= 2730 V/m
e) savg = emax * bmax / 2 mu0
= (2730 * 9.1 * 10-6) / (2 * 4pi * 10-7)
= 9880 W/m2
f) p = 2 s / c
= (2 * 9880) / (3 * 108)
= 6.59 * 10-5 N/m2
g) a = p a / m = (6.59 * 10-5 * 40) / (42 * 10-3)
= 0.0627 m/s2
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.