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chemistry4all
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Homework Statement
Two oppositely charged balls are hung by strings from a wooden dowel. The two balls are separated by a distance of R.
a) If the balls are moved along the dowel until their separation is 3/2 R, has their potential energy increased or decreased?
b) What is the magnitude (size) of the effect on the potential energy (by what factor does it change)?
Homework Equations
Nothing is given but the 3/2 R and I am not sure which equation or equations to use. I am aware of PE= mxgxh and that's about it.