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Net force on particle 1 due to particle 2 in vector form?

  1. Aug 2, 2015 #1
    1. The problem statement, all variables and given/known data
    Hi all,
    I have this quiz on MasteringPhysics, but I cant seem to get the right answer.

    Consider two positively charged particles, one of charge q0 (particle 0) fixed at the origin, and another of charge q1 (particle 1) fixed on the y-axis at (0,d1,0). What is the net force F⃗ on particle 0 due to particle 1?
    Express your answer (a vector) using any or all of k, q0, q1, d1, i^, j^, and k^.

    If someone wouldnt mind giving me some advice, I would much appreciate it.

    2. Relevant equations
    Columns Law

    3. The attempt at a solution
  2. jcsd
  3. Aug 2, 2015 #2
    The direction of the force is important too.
  4. Aug 2, 2015 #3
    Force on q0 by q1 acts in which direction ?
  5. Aug 3, 2015 #4
    You have write down the part of the answer.
    The complete Coulomb law is:
    for ##\vec{F_{12}}## is the force ##q_1## makes on ##q_2## and ##e_{12}## is the unit vector from ##q_1## toward ##q_2.##
    It may help you find out the correct direction of the force.
  6. Aug 4, 2015 #5
    41643ec5136542b93edf3f6b56fb90f0.png and putting r(cap) = r(vector)/r
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