Coulomb's Law: A point charge Q = -12 ?C, and two other charges q2 and q2, are placed on x-y axes as shown in the figure. The electric force components on charge Q are Fx = +0.005 N and Fy = -0.003 N. (k = 1/4??0 = 9.0 × 109 N ? m2/C2, e = 1.6 × 10-19 .C(a) How many excess electrons are there in charge Q?(b) What are the charges q1 and q2, including their signs?
What will be an ideal response?
(a) 7.5 × 1013 electrons (b) q1 = +600 nC, q2 = -640 nC
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