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Homework Help: Heat so hard.

  1. May 13, 2008 #1
    heat!!!!!!!!!!!!!!!!!!!!!!!!! so hard.

    true or false

    1.The entropy of a system can never decrease

    2.All Carnot engines are reversible

    3.It is impossible have a net transfer of heat from a cold reservoir to a warm reservoir

    4.A refrigerator lowers the entropy of the volume inside

    5.If the temperature of the cold reservoir increases with the temperature of the hot reservoir unchanged, the efficiency of a Carnot engine will increase

    6.Adiabatic expansion will lower the temperature of a gas

    7.Any process that includes adding heat to an ideal gas will increase the entropy of the gas

    8.All Carnot engines are more efficient than all real engines
  2. jcsd
  3. May 13, 2008 #2
    No one will do your work for you.

    If you have a genuine interest in knowing the answer to these questions you must show that you have actually thought about them, also ask them one or two at a time with effort given on each. Good luck.
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