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Homework Help: Two Charges on a Triangle

  1. Mar 16, 2014 #1
    1. The problem statement, all variables and given/known data

    Two charges of opposite sign and equal magnitude Q = 0.82 C are held 2.0 m apart as shown in the figure.

    Picture: http://gyazo.com/a78a049ce0a24ad464fd7bb99dffd665

    A) Determine the magnitude of the electric field at the point P.
    B) Determine the electric potential at the point P.
    C) How much work is required to move a 1.0 C charge from infinity to the point P?

    2. Relevant equations


    3. The attempt at a solution

    I am really stuck...I have no clue where to start
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Mar 16, 2014 #2
    Hey there!
    You have 3 problems, but only one equation - you're going to need the equation for electric field, and electric potential.

    I'm just going to give you a pointer for now - electric field is a vector quantity, so you'd be best off if you tried to break the electric field of each charge into its respective x and y components. Potential and Potential Energy are scalar quantities, so direction doesn't matter - the distance between the charge and the point does.
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