Partition Function of 2 State System

Click For Summary
In a two-state system with energy levels of 0 and V, the partition function is correctly calculated as Z = 1 + e^(-V/kT). The average energy is not simply V; it is determined by the probabilities of occupying each state, leading to a more complex relationship. Entropy is not zero in this system; it reflects the uncertainty and distribution of states, even when one state has zero energy. The confusion arises from misinterpreting the relationship between energy, partition function, and entropy in statistical mechanics. Therefore, the entropy of a two-state system with one state at zero energy is not zero.
HalfManHalfAmazing
Messages
53
Reaction score
0
If I have a 2 state system with energy levels of the 2 states to be 0 and V. I find the partition function to be Z = 1 + e^(-V/kT). Am I correct? If so, does that not mean the average energy is V? and thus the entropy is 0? This doesn't make sense, how is the entropy of a 2 state system (when 1 state is zero energy) 0?!

Thanks!
 
Physics news on Phys.org
Is the entropy of a 2 state system with 1 state with energy 0 equal to 0?
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

Similar threads

Replies
2
Views
3K
  • · Replies 39 ·
2
Replies
39
Views
3K
Replies
2
Views
1K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 49 ·
2
Replies
49
Views
9K
Replies
0
Views
1K
Replies
4
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
Replies
1
Views
1K