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What is internal energy?

  1. Jan 16, 2014 #1
    Wikipedia says its the TOTAL energy contained by a thermodynamic system.

    But the textbook says
    Total energy = internal energy + kinetic energy + potential energy
     
  2. jcsd
  3. Jan 16, 2014 #2
    Strictly speaking, your textbook is the better, and more common, definition.
     
  4. Jan 16, 2014 #3

    ehild

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    Read Wikipedia further
    ehild
     
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