r 2. The electric field in an electromagnetic wave has the following form: E. cos(kr - wt) a) Find the Poynting Vector b

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r 2. The electric field in an electromagnetic wave has the following form: E. cos(kr - wt) a) Find the Poynting Vector b

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R 2 The Electric Field In An Electromagnetic Wave Has The Following Form E Cos Kr Wt A Find The Poynting Vector B 1
R 2 The Electric Field In An Electromagnetic Wave Has The Following Form E Cos Kr Wt A Find The Poynting Vector B 1 (25.75 KiB) Viewed 63 times
r 2. The electric field in an electromagnetic wave has the following form: E. cos(kr - wt) a) Find the Poynting Vector b) Find the total amount of energy/time crossing a spherical surface a distance r=R from the origin of the wave. Then integrate over one period to find the total energy that crosses the surface within one period. c) Do the same for a spherical surface at a distance 2R and compare to part (a). d) Compare the answers to (b) and (c). What does this mean?
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