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Homework Help: RMS speed of Helium atoms

  1. Nov 2, 2007 #1
    1. The problem statement, all variables and given/known data
    What is the RMS speed of Helium atoms when the temperature of the Helium gas is 247 K? (Possibly useful constants: the atomic mass of Helium is 4.00 AMU, the Atomic Mass Unit is: 1 AMU = 1.66×10-27 kg, Boltzmann's constant is: kB = 1.38×10-23 J/K.)

    What would be the RMS speed, if the temperature of the Helium gas was doubled?

    2. Relevant equations
    sq rt of 3RT/M

    3. The attempt at a solution
    is that the right equation to use? I am having a hard time with this one
  2. jcsd
  3. Nov 2, 2007 #2


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    Homework Helper

    Yes, you can use that equation.
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