Multiple Choice
When the inside of a refrigerator is cooled, does thermal energy flow from hot to cold, or is it from cold to hot? Does this happen spontaneously, or is outside assistance required?
A) From cold to hot. Since this is against the normal flow of thermal energy, outside assistance is required.
B) From cold to hot. Since this is the normal way that thermal energy flows, no outside assistance is needed.
C) Only the Shadow knows.
D) From hot to cold. Since this is against the normal flow of thermal energy, outside assistance is required.
E) From hot to cold. Since this is the normal way that thermal energy flows, no outside assistance is needed.
Correct Answer:

Verified
Correct Answer:
Verified
Q8: The second law of thermodynamics implies that<br>A)
Q9: The main reason for the large inefficiency
Q10: A day during which the atmospheric temperature
Q11: When a fuel cell operates, the energy
Q12: The most efficient form of locomotion in
Q14: Which of the following is not a
Q15: The biggest reason why heat engines are
Q16: Suppose you viewed a movie that was
Q17: Is it physically possible [even though it
Q18: Which of the following would be "linear"