- #1
mikil100
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Homework Statement
Suppose you want to move two charges apart, both are equal charges of opposite sign at 1.4x10^9C, and their starting position is 6.7m apart, how much work would it take to further separate the charges to a final distance of 7.9m, that is, move them 1.2m
Homework Equations
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The Attempt at a Solution
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I have gotten an answer at 1.5x20^28 J, this was by taking the distance 1.2m and using it as the distance traveled-plugging it into the equation-- I also made an assumption that both charges, while opposite sign are treated with absolute value, otherwise I get negative work which doesn't seem to make sense as it is working to separate the charges from on another, therefore increasing potential energy.