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!

Speed of the electron after the collision

  1. May 12, 2010 #1
    An electron with a speed of 5.50×10^6 m/s, collides with an atom. The collision excites the atom from its ground state (0eV) to a state with an energy of 3.50eV


    What is the speed of the electron after the collision?


    Dont know where to start.
     
  2. jcsd
  3. May 12, 2010 #2

    rock.freak667

    User Avatar
    Homework Helper

    Well how much of the initial energy of the electron is transferred to the atom to cause the excitation?
     
  4. May 12, 2010 #3
    Conservation of Energy:

    [tex]KE_e_i = KE_{e_{f}} + E_{atom} [/tex] assuming that the atom is initially at rest.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Speed of the electron after the collision
  1. Speed after collision (Replies: 1)

Loading...