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Posted by Jenny on Saturday, April 10, 2010 at 3:32pm.
Two charges separated by 1 meter exert a 1 N force on eachother. If the magnitude of each charge is doubled, the force on each charge is?
F = k Q1 Q2/r^2 Q1' = 2 Q1 Q2' = 2 Q2 so 4 times
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