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March 25, 2017

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I=0.5E0EO²C where E0 is the permitivity of the vacuum and C is the velocity of light. a)Show that the units of the equetion are consistant b)A certain helium-neon laser emits 0.20mW in a beam of cross sectional area 3.0mm.Determine the peak values of the electric field associated with this beam.

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