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Introductory Physics Homework Help
Force of a charge Q at the origin?
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[QUOTE="Violagirl, post: 4534840, member: 437260"] [h2]Homework Statement [/h2] A charge Q is placed at the center of the origin on the attached document. What is the force on this charge? [h2]Homework Equations[/h2] Coulomb's Law: F= kqQ/d[SUP]2[/SUP] ^ r [h2]The Attempt at a Solution[/h2] See attached document for figure. I'm confused by this problem. Along the positive y axis, we have a postive charge of Q. On the negative y axis, we have 2Q, which I also assume is a positive charge. Hence because Q at the origin is also at the center, I thought that both charges would repel this Q to stay at the center because like charges repel each other. I'm not sure how to show this though with Coloumb's Law since from that point of view, Q isn't going anywhere so there would be no change in distance... [/QUOTE]
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Introductory Physics Homework Help
Force of a charge Q at the origin?
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