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kilnvzol
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Homework Statement
Figure 24-21 shows four pairs of charged particles with identical separations. (a) Rank the pairs according to their electric potential energy (that is, the energy of the two-particle system), greatest (most positive) first. (b) For each pair, if the separation between the particles is increased,does the potential energy of the pair increase or decrease?
Homework Equations
U = W = (kq1q2)/r
The Attempt at a Solution
For part a, I got the ranking 3,2,4,1 by subtracting the second particle from the first one. ie. (1) -2-(+6) = -8
For part b, I got 1,4 increase whereas 2,3 decrease from the equation.
I haven't gotten the answers to these but I want to make sure I'm right.
Thank you!