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!

Need help with a problem

  1. Oct 5, 2004 #1
    I'm trying to figure out this problem and i am having no luck. Any help would be great.

    a) How much voltage would be need, in order to accelerate protons from rest to 5.0x10 to the 6th m/s.
    b) what is the kinetic energy of these protons in eV, after they hit the top speed indicated in part a?
  2. jcsd
  3. Oct 5, 2004 #2


    User Avatar
    Science Advisor
    Homework Helper

    The amount of work done by the electric field is [itex]E = q V[/itex].
  4. Oct 5, 2004 #3
    try this

    Try this,
    q= charge on proton, v= speed, m= mass

    Kinetic energy, K= 0.5m*v^2 units will be in joules.
    to convert it in eV divide it by 1.67*10^-19.
    have better luck this time
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Need help with a problem