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!

Electron achievable resolution?

  1. Jul 8, 2007 #1
    Electron...achievable resolution???

    1. The problem statement, all variables and given/known data
    An electron is confined inside a sphericial region of diametre 1.5nm.The speed of the electron is measured. Which of the following is not an achieveable resolution for the measurement?

    A +/- 9.7*10^3 ms^-1

    B +/- 3.86*10^4ms^-1

    C +/- 7.72*10^4ms^-1

    D +/- 1.21*10^5ms^-1

    E +/- 1.54*10^5ms^-1

    ANSWER = A

    2. Relevant equations

    Im not sure really, since I dont know how to attempt this question, I think either the debroglie wavelength or uncertainity principle, but to be honest,I dont really know what to use.

    3. The attempt at a solution
    I dont have a clue, would someone be able to at least start me in the right direction, thankyou.
  2. jcsd
  3. Jul 8, 2007 #2
    use the uncertainty principle delta(x)*delta(p)<h bar. You have delta(x) which is the width, so find delta(p) and delta(p)= mass * delta(velocity) => possible resolution.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Electron achievable resolution?
  1. Resolution PIPS (Replies: 1)