Thermodynamics and Heat Transfer
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Questions and Answers

What is thermal energy?

  • The difference in internal energy between the final and initial states of a system
  • The energy transfer to or from a thermodynamic system
  • The kinetic energy of vibrating and colliding atoms in a substance (correct)
  • The energy stored in the microscopic degrees of freedom of the modes of vibration

    • In thermodynamics, what is heat defined as?

  • Thermal energy transferred between systems due to a temperature difference (correct)
  • Energy stored in the microscopic degrees of freedom of the modes of vibration
  • Difference in internal energy between the final and initial states of a system
  • Energy transfer to or from a thermodynamic system

    • What does the term 'heat content' refer to in physics?

  • Energy transfer to or from a thermodynamic system
  • Energy stored in the microscopic degrees of freedom of the modes of vibration
  • Thermal energy contained in the system or body (correct)
  • Difference in internal energy between the final and initial states of a system

    • How is heat involved quantitatively in a process?

    <p>The difference in internal energy between the final and initial states of a system, subtracting the work done in the process</p> Signup and view all the answers

    What is excluded from the descriptive characterization of heat?

    <p>Transfers of energy by thermodynamic work or mass transfer</p> Signup and view all the answers

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