1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Velocity of proton

  1. Jan 24, 2008 #1
    1. The problem statement, all variables and given/known data

    What is the speed of a proton whose kinetic energy is 23.0 keV?

    1 eV = 1.6e-19 J
    23 Kev = 23000 eV = 3.68e-15 J

    2. Relevant equations

    V = Sq. Rt. ( - ((2)(q)(Vba)) / (m))

    3. The attempt at a solution
  2. jcsd
  3. Jan 24, 2008 #2


    User Avatar
    Homework Helper

    Just sub the values into the formula
  4. Jan 24, 2008 #3
    What is each value? What is q, Vba, and M?

    Is M = 1.67e-27 kg ?

    And where does the KeV value go?
  5. Jan 25, 2008 #4


    User Avatar
    Homework Helper


    m=mass of a proton which you have. the eV is just another way to express energy.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook