Potential Energy: Point charges +4.00 ?C and +2.00 ?C are placed at the opposite corners of a rectangle as shown in the figure. If these charges are released and are free to move with no friction, what is the maximum amount of kinetic energy they will gain? (k = 1/4??0 = 8.99 × 109 N ? m2/C2) 
Fill in the blank(s) with the appropriate word(s).
80.4 mJ
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