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Mass via E = mc^2

  1. May 24, 2006 #1
    A proton is accelrated from rest through a potential diff of 500 V. Find the mass and velocity...


    I know that V*q = E therefore 8x10^(-17) J is the energy... but I don't know what to do after that, I've tried getting the mass via E = mc^2 and then using that mass in E = mc^2/sqrt(1-v2/c2) but that has not yielded the correct answers.
     
  2. jcsd
  3. May 24, 2006 #2
    n/m got it
     
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