Homework Answers
A)
Force, F = k q1 q2/r^2
F = (9 x 10^9)(20.8 x 49 x 10^-12)/0.0253^2
F = 14330.48 N (attractive)
B)
Charge, q = (- 20.8 + 49)/2 = 14.1 uC
Force, F = (9 x 10^9)(14.1 x 10^-6)^2/0.0253^2 = 2795.37 N (repulsive)
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