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Homework Help: Entropy per unit mass question (ds)

  1. May 22, 2006 #1
    I'm attempting to answer these thermodynamic quesions about entropy. It's been years since my last thermo course so knowledge is cloudy. If i'm incorrect or missiong relevant answers, please help.

    a. If ds = 0, what can you say about the process?
    b. If ds < 0, what can you say about the process?
    c. If ds1 < ds2, what can you conclude about these processes?

    A. process is reversible
    B. ds<0 <----is this possible?
    C. ds1 is "more" reversible than ds2
  2. jcsd
  3. May 22, 2006 #2
    a. yes
    b. yes, its possible
    c. yes, that's true.
  4. May 23, 2006 #3
    If it's possible for the answer B, then what can I say about the process? I don't recall learning anything about ds<0.
  5. May 25, 2006 #4


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    What do you mean by "more" reversible? I don't understand. A process can either be reversible or irreversible. What do you mean when you say more reversible?
  6. May 26, 2006 #5
    He means it has less irreversibilities.
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