College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
I need help with questions 2 and 3.
Transcribed Image Text:1) What is f, the frequency of this wave?
9.09
GHz Submit
Your submissions:
9.09
Computed value: 9.09
Submitted: Monday, April 19 at 2:30 PM
Feedback: Your answer has been judged correct; the exact answer is: 9.09090909090909.
2) What is I, the intensity of this wave?
W/m? Submit
3) What is Sz, the z-component of the Poynting vector at (x = 0, y = 0, z = 0) at t = 0?
%3D
W/m? Submit
.....................................................................................................................................................................................................................................................................................................................................................................
Transcribed Image Text:A plane monochromatic electromagnetic wave with wavelength A = 3.3 cm, propagates through a vacuum. Its magnetic
field is described by
%3D
B= (Bi+ By j) cos(kz+wt)
where By = 3.8 X 10-6 T, By = 4.7 X 10-6 T, and i-hat and j-hat are the unit vectors in the +x and +y directions,
respectively.
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