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Flipping the second law (MC)

Page history last edited by Joe Redish 8 years, 1 month ago

7.3.1.P1

 

A. If you flip a fair coin 10 times, which string of results are you more likely to get?

         I: HHHHHHHHHH
         II: HTHTTHTHHT

 

  1. String I
  2. String II
  3. They are equally probable
  4. You can’t tell without being given more information.

 

B If you flip a fair coin 10 times, which result are you more likely to get?


    i: 10 heads

          ii: 5 heads and 5 tails

 

  1. Result i
  2. Result ii
  3. They are equally probable
  4. You can’t tell without being given more information.

 

 

C.  Smoke spontaneously spreads out from a cigarette to fill a room, but the reverse process is never observed to spontaneously occur (unless some force from outside the system acts).  Consider various physical laws:


          I: 1st Law of thermodynamics: Conservation of Energy
          II: Conservation of Momentum
          III: 2nd Law of thermodynamics: systems spontaneously evolve to more probable states

 

The reverse process described above is never observed because it would violate:

  1. III only
  2. I, II, and III
  3. I and III only
  4. I and II only

 

 

Joe Redish 1/13/2012 

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