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Homework Help: Electrical field

  1. Nov 10, 2004 #1


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    plz help

    given insulator ball with radius R that charged with uniformed density p<0.
    the ball is charged with -3Q

    3 colon charges with Q>0 each one, are found inside the ball (look at the draw)
    the charges found at triangle that it's sides are equal (each side length = d)
    and d<=2R
    the triangle found at a plane that divide the ball to two equal areas.
    given that all the system is balanced, found the length d between the charges

    draw at http://s7.yousendit.com/d.aspx?id=269C621FA10036C8DC0AB7CAB624D86E

  2. jcsd
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