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Homework Help: Magnitude and direction of charge

  1. Jul 6, 2010 #1
    1. The problem statement, all variables and given/known data
    Two charges q1 = 5μC and q2 = 10μC are located at x = 0 cm and 10 cm respectively. What
    would the magnitude and direction of the force on a 2μC charge located at x = 5 cm be due to charges q1 and q2.

    2. Relevant equations

    3. The attempt at a solution
    i don't know how to do this problem, i appreciate any help, thanks
  2. jcsd
  3. Jul 6, 2010 #2
    You dont have any equations you have learned about force and static charges?
  4. Jul 6, 2010 #3
    F=kq1q2/r^2 so do i find the force of each then subtract them? What do i do with each F i find?

    i don't know any static charge equations.
  5. Jul 6, 2010 #4
    What you have given above is the equation that says that two static charges q1 and q2 separated by a distance r, exert a force of F on each other. So why dont you start by determing the Force of the charge at the 0 cm mark on the charge that is in between, the 2uc charge.
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