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
- String I
- String II
- They are equally probable
- 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
- Result i
- Result ii
- They are equally probable
- 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:
- III only
- I, II, and III
- I and III only
- I and II only
Joe Redish 1/13/2012
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