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Physics, 12.07.2019 19:20 armstrongstang420

(a) for an ideal plane electromagnetic wave in vacuum, show that the energy crossing an area a in 1 second, with a normal to the direction of propaga- tion, is equal to the total field energy within a cylinder with base a and height 3 x 108 m. (b) show that cuav and explain this result in terms of conservation of energy.

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