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Homework Help: SPH 4U0 Questions

  1. Dec 20, 2007 #1
    1. The problem statement, all variables and given/known data

    I have a few questions which I have tried myself and have gotten a few answers, but I am unsure if they are right or not. If someone can confirm if I have them right it will be greatly appreciated on my part.

    2. Relevant equations

    How many excess electrons are needed to create a net charge of 100 Uc?.

    Answer : 6.25 x 10^20 electrons.

    2) How far apart must two electrons be in order that they expierience a force of repulsion of 1.0x10^-12 N?.

    Answer: 3x10^21 m.
    3. The attempt at a solution
     
  2. jcsd
  3. Dec 20, 2007 #2

    rl.bhat

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    Homework Helper

    Any charge Q = n*e where e is the charge on an electron. Now check your answer.
    For part (2) wright down the relevant equation.
     
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