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Help on one more question

  1. May 5, 2008 #1
    1. The problem statement, all variables and given/known data
    Two particles, separated by an enormous distance, approach each other. Each has an initial speed of 3.0 X 10^6 m/s. Calculate their minimum separation, assuming no deflection from their original path. The mass of a partical is 6.6 X 10^-27 kg.

    Particle charge = 3.2 X 10^-19 C

    V = 3.0 X 10^6m/s
    mass of particle = 6.6 X 10^-27 kg
    r = ?

    2. Relevant equations
    E = Eprime
    Fe = kq1q2/r^2

    3. The attempt at a solution
    EE + EK = EEprime + EKprime
    Kq1q2/r + 1/2 mv^2 = Kq1q2/r + 1/2m(vprime)^2

    Dont know where to go from there
  2. jcsd
  3. May 5, 2008 #2


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    Homework Helper

    How does the phrase "separated by an enormous distance" affect a term in the energy equation?

    When you plug in numbers to your equation, what do you get? (I noticed you combined the kinetic energy of both particles into one term on each side, so you'll have to adjust the mass to deal with that.)
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