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Homework Help: Finding the speed of a proton in a mass spectrometer

  1. Dec 31, 2012 #1
    1. The problem statement, all variables and given/known data
    A mass spectrometer uses either a magnetic field or an electric field to deflect charged particles.

    A proton starts from rest a plate P. The Speed of the proton as it passes through the hole in plate Q is?

    V= 10000 V
    Mass of a proton = 1.67x10^-27
    Charge of a proton = 1.6x10^-19

    With this you then need to find the magnetic field intensity.

    Radius of curvature of a protons path is 3.00 m.

    2. Relevant equations

    I have no clue?

    3. The attempt at a solution

    Dont know were to start?
  2. jcsd
  3. Jan 1, 2013 #2


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  4. Jan 2, 2013 #3
    Thanks for the help. After reading over that i was able to awnser the question.
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