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Homework Statement
http://online.physics.uiuc.edu/cgi/courses/shell/phys102/fall06/prep2a.pl?practice/exam1/fa06
Homework Equations
W =F*D
The Attempt at a Solution
I have it solved, now i thought - would be if i put work into the thing to move it but looking at it since both of them are postive charge they are gona wana repel each other to begin with so why is it not +
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