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!

Electric Potential- quick question about process

  1. Feb 21, 2010 #1
    Electric Potential-- quick question about process

    1. The problem statement, all variables and given/known data

    An alpha particle with kinetic energy 10 MeV makes a head-on collision with a lead nucleus at rest. What is the distance of closest approach of the two particles? (Assume that the lead nucleus remains stationary and that it may be treated as a point charge. The atomic number of lead is 82. The alpha particle is a helium nucleus, with atomic number 2.)

    2. Relevant equations

    V=kq/r

    3. The attempt at a solution

    http://www.solvephysics.com/electricity_problem26.shtml
    I tried going by this site to solve this. I would just like to know why in the Einitial equation they multiply the 10MeV by 1.6e-19. Why do they do that? I don't understand.

    Thanks!
     
  2. jcsd
  3. Feb 21, 2010 #2
    Re: Electric Potential-- quick question about process

    http://en.wikipedia.org/wiki/Electronvolt
     
  4. Feb 21, 2010 #3
    Re: Electric Potential-- quick question about process

    Thank you so much, I would have never gotten that on my own!!
     
  5. Feb 21, 2010 #4
    Re: Electric Potential-- quick question about process

    It should be in your textbook as well.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Electric Potential- quick question about process
Loading...