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 on uncertainty principle

  1. Nov 13, 2008 #1
    1. The problem statement, all variables and given/known data
    In order for a neutron can exist in a nucleus, its wavelength must be smaller than the size of the nucleus (say 2 x 10-15 m)
    Use the uncertainty principle to calculate and show that a neutron would have a kinetic energy much smaller than its rest mass energy


    2. Relevant equations

    ΔE Δt > h/4π


    3. The attempt at a solution

    I had no clue in how to solve this problem. At first, I was thinking to solve for E, but figured that I don't know how to calculate for t.

    Can anyone help me with this question?
     
  2. jcsd
  3. Nov 14, 2008 #2

    Redbelly98

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    There's another version of the uncertainty principle, involving position and momentum. Try that.

    p.s. welcome to PF.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?