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!

Determine the ratio of the electron's speed

  1. Jul 15, 2005 #1
    Determine the ratio of the electron's speed over that of the proton at the end of their respective trajectories? KE = 5.29keV

    My question is do I use the kinetic energy to get velocity of electron then proton separately, and afterwards divide the results to obtain the ratio?
     
  2. jcsd
  3. Jul 15, 2005 #2
    That's what I would do.
     
  4. Jul 15, 2005 #3
    electron: m, v
    proton: M, u

    mv²/2 = Mu²/2
    mv² = Mu²
    v²/u² = M/m
    v/u = sqrt(M/m) = sqrt(1836) = 42.85

    (valid for v << c)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Determine the ratio of the electron's speed
  1. Speed ratio (Replies: 3)

  2. Speed ratio (Replies: 14)

  3. Ratio of speed (Replies: 3)

Loading...