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    SexyMarilyn's Avatar
    SexyMarilyn Posts: 1, Reputation: 1
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    #1

    Apr 13, 2009, 11:01 AM
    True or False
    The first law of thermodynamics states that entropy is constantly increasing in the universe.
    hmorrar's Avatar
    hmorrar Posts: 57, Reputation: 0
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    #2

    Apr 13, 2009, 11:07 AM
    Quote Originally Posted by SexyMarilyn View Post
    entropy .
    Sorry what is exactly entropy?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #3

    Apr 14, 2009, 02:38 AM
    Quote Originally Posted by SexyMarilyn View Post
    The first law of thermodynamics states that entropy is constantly increasing in the universe.
    False, the first law of thermodynamics states that energy cannot be created or destroyed.
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #4

    Apr 14, 2009, 02:41 AM
    Quote Originally Posted by hmorrar View Post
    sorry what is exactly entropy?
    Entropy is a measure of randomness.

    for example, ice has a low entropy because it's crystalline and the atoms have a lower number of degrees of freedom, it is more "ordered".
    whereas steam has a high entropy, because each molecule has a high degree of freedom.

    in any closed system, entropy cannot decrease. This is the second law of thermodynamics.
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