Recent content by shotikokobaxi

  1. S

    How can Coulomb's Law be used to find the force between a charge and a surface?

    we use kulon's force F=kq2/r2 the question is to find the force with which the surface (which hasn't any charges) acts on the Q charge
  2. S

    How can Coulomb's Law be used to find the force between a charge and a surface?

    Homework Statement We have a charge Q and it's h metres far from the flat surface. Find the force with which acts on the Q charge by the surface The answer is: F=kQ2/4h2 i couldn't get it, please help me. Homework Equations The Attempt at a Solution