1. Limited time only! Sign up for a free 30min personal 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!

Physics Thermal Properties HW Problem

  1. Dec 3, 2013 #1
    1. The problem statement, all variables and given/known data

    A deuteron is the nucleus of a hydrogen isotope and consists of one proton and one neutron. The
    plasma of deuterons in a nuclear fusion reactor must be heated to about 300 million K.
    (a) What is the RMS speed of the deuterons? Is this a significant fraction of the speed of light c =
    3 x 10^8 m/s?
    (b) What would the temperature of the plasma be if the deuterons had an RMS speed equal to
    0.10 c?

    R=8.314; T=300E6K

    2. Relevant equations

    v[itex]_{rms}[/itex]=[itex]\sqrt{\frac{3RT}{M}}[/itex]


    3. The attempt at a solution

    I know how to solve this, but I dont get the first part of the question. how do you find M? I tried M=1.008, but that doesnt make sense.
     
    Last edited: Dec 3, 2013
  2. jcsd
  3. Dec 3, 2013 #2

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    If a deuteron has one proton and one neutron, does it make sense that M = 1.008?

    After all, you can look these things up on the internet.
     
  4. Dec 3, 2013 #3
    oh, thanks. I just add Mp + Mn to get M...right?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Physics Thermal Properties HW Problem
Loading...