1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

SPH4U University Grade 12 Physics - Coulomb's Law?

  1. Apr 8, 2012 #1
    1. The problem statement, all variables and given/known data

    SPH4U University Grade 12 Physics - Coulomb's Law?
    I have to determine the answer using Coulomb's Law. Please help me figure out how to do this !

    Three point charges, q₁= -5.00 μC, q₂= -4.00 μC, and q₃ which is negative are arranged as shown on three corner of side a=0.500 m. The direction of the forces on qt is at +20.0° with respect to the + x axis.
    Calculate the magnitude of q₃

    2. Relevant equations

    Coulomb's Law

    3. The attempt at a solution

    I don't even know how to start :confused:
     
  2. jcsd
  3. Apr 9, 2012 #2
    Can you attach a picture or describe how q1 and q2 are situated?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook