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Homework Help: Finding the Mass of an Atom

  1. Apr 19, 2009 #1
    1. The problem statement, all variables and given/known data

    A mass spectrometer analyzes and gives data for a beam of doubly ionized atoms. The values are q = 2(1.60 x 10^-19 C), B = 5.0 x 10^-2 T, r = 0.120 m, and V = 3442.9 V. Find the mass of one of these atoms.

    2. Relevant equations

    B^2*q*r^2 / 2*v

    3. The attempt at a solution

  2. jcsd
  3. Apr 19, 2009 #2


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    Staff Emeritus
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    Homework Helper

    Sorry, but I can't tell what the equation you wrote here is supposed to represent.

    What is the formula for path radius given m, q, v, and B? It should be in your textbook.

    And that equals what???
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