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Homework Help: Intenal energy increase in wind of star ?

  1. Apr 5, 2012 #1
    1. The problem statement, all variables and given/known data
    If a big star gives of wind , forming shock and then a bubble .. And then this bubble is driven by pressure
    Also as the bubble expands the surrounding mass gets added to it
    Does it make sense for the Total energy to increase ?

    2. Relevant equations

    3. The attempt at a solution
    Last edited: Apr 5, 2012
  2. jcsd
  3. Apr 5, 2012 #2


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    Staff: Mentor

    What are your thoughts? How do you define Total Energy? What source of energy is driving the surface activity on a star?
  4. Apr 5, 2012 #3
    total energy = thermal + Kinetic

    Star gives off mechanical energy, then forming shocks which inturn heats up the surrounding, thus driving the shock via pressure

    I would say that the total energy decreases ?
    Just from simply looking at the equations Thermal=3/2PV and Ek=0.5mv^2

    but I have results that contradict that :(
  5. Apr 7, 2012 #4
    anyone ?
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