A -3.0-?C point charge and a -9.0-?C point charge are initially extremely far apart
How much work does it take to bring the -3.0-?C charge to x = 3.0 mm, y = 0.00 mm and the -9.0-?C charge to x = -3.0 mm, y = 0.00 mm? (k = 1/4??0 = 8.99 × 109 N • m2/C2)
A) 40 J
B) 81 J
C) 27 J
D) 6.8 J
A
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