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Homework Help: Total work

  1. Jul 19, 2013 #1
    Ok, if it says that change of internal energy is part(for example 1/3) of TOTAL work executed over system(body). Does it mean that is TOTAL work indeed sums of every single work(mechanical work+internal energy change+...) ?
  2. jcsd
  3. Jul 19, 2013 #2

    Andrew Mason

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    It means that 2/3 of the work done on the system has escaped the system as heat flow.

    From the first law:

    Q = ΔU - W where W is the work done ON the system.

    If ΔU = W/3 what is Q?

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