1. Not finding help here? Sign up for a free 30min 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!

Finding Electrostatic Force

  1. Jan 31, 2013 #1
    1. The problem statement, all variables and given/known data
    A 8.15 nC charge is located 1.95 m from a 4.18 nC point charge.
    (a) Find the magnitude of the electrostatic force that one charge exerts on the other.
    N

    (b) Is the force attractive or repulsive?

    2. Relevant equations



    3. The attempt at a solution
    Is there really a way to deduce the sort of force from the given information?
     
  2. jcsd
  3. Jan 31, 2013 #2
    Yes, use the Coulombs's law.
     
  4. Jan 31, 2013 #3
    I'm sorry. I meant to deduce what sort of force it is, as in repulsive or attractive.
     
  5. Jan 31, 2013 #4

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Like charges repel. How do you know if the charges are 'alike'?
     
  6. Feb 1, 2013 #5
    If they have the same sign, then two objects would repel each other?
     
  7. Feb 1, 2013 #6

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook