10. 2nd Law Themodynamics And Entropy

7 Questions | Total Attempts: 715

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10. 2nd Law Themodynamics And Entropy

The quiz below is specifically set and designed to test your knowledge of thermodynamics and entropy. How well are you with heat energy and its conversion into mechanical energy? Take up the quiz below and find out.


Questions and Answers
  • 1. 
    In a heat engine, what is the relationship between Qh, Qc and W
    • A. 

      W = Qh + Qc

    • B. 

      W = Qc - Qh

    • C. 

      W = Qh - Qc

    • D. 

      Q + Qh, + Qc = 0

  • 2. 
    How is it possible that heat can spontaneously go from a cold object to a hot object?
    • A. 

      By having one way super conductive material between them

    • B. 

      Work can be done by the system to make this happen

    • C. 

      Work can be done to the system to make this happen

    • D. 

      Cold objects can never give thermal energy to hot objects

  • 3. 
    What is Entropy a measurement of?
    • A. 

      Energy of a system

    • B. 

      Change in energy in a chemical reaction

    • C. 

      Temperature

    • D. 

      Average particular energy in a system

    • E. 

      Disorder in a system

  • 4. 
    What is true about entropy
    • A. 

      If it increases in one place, it MUST decrease elsewhere

    • B. 

      If it decreases in one place, it MUST increase elsewhere

    • C. 

      It must decrease in the universe

    • D. 

      It must stay constant in the universe

  • 5. 
    From memory, state the 2nd law of thermodynamics.
  • 6. 
    Explain why a steam engine in theory is able to move quicker on a cold winter's day?
  • 7. 
    Is there any part of this you would like to go over in class?
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