Timeline for Calculating entropy for the surroundings the logical way doesn't work
Current License: CC BY-SA 4.0
30 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 28 at 6:07 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| May 28 at 2:00 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jan 28 at 22:04 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Sep 25, 2023 at 23:04 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| May 24, 2023 at 15:07 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jan 22, 2023 at 15:04 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Sep 22, 2022 at 18:04 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| May 16, 2022 at 20:04 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jan 9, 2022 at 17:05 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Sep 9, 2021 at 12:00 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Apr 26, 2021 at 1:05 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Dec 25, 2020 at 12:05 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| S Nov 24, 2020 at 23:59 | history | suggested | Urb | CC BY-SA 4.0 |
formatting
|
| Nov 24, 2020 at 23:20 | review | Suggested edits | |||
| S Nov 24, 2020 at 23:59 | |||||
| Nov 24, 2020 at 23:03 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jul 26, 2020 at 0:03 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Mar 25, 2020 at 3:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Nov 11, 2019 at 9:02 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jul 8, 2019 at 5:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Mar 8, 2019 at 18:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jun 12, 2018 at 16:31 | comment | added | Gamabunto | @ChesterMiller I had always determined the change in entropy of the surroundings with the formula Q_abs/T, but as the entropy is a state function and the surrounding's state doesn't seem to change much I wanted to check myself if the limit agreed with the formula. | |
| Jun 12, 2018 at 16:28 | comment | added | Gamabunto | @ChesterMiller When I first posted I assumed that since the temperature of the big champer didn't change, the contribution of its temperature to its entropy didn't either, but I was mistaken and now I think everything is alright. | |
| Jun 11, 2018 at 15:03 | comment | added | Chet Miller | I found this a very interesting and highly thought provoking problem. What ever made you conceive of it? | |
| Jun 11, 2018 at 11:27 | comment | added | Chet Miller | If you combine the two terms in your final equation for the entropy change of the "surroundings," you get the result you expected. So, what's the problem? | |
| Jun 10, 2018 at 22:29 | answer | added | Chet Miller | timeline score: 0 | |
| Jun 10, 2018 at 18:54 | comment | added | Gamabunto | @ChesterMiller Not quite. The small chamber is inside the big one. In my head the big one is the atmosphere and the small one is a cylinder with a piston where a weight is placed. | |
| Jun 10, 2018 at 18:52 | history | edited | Gamabunto | CC BY-SA 4.0 |
I think it's solved
|
| Jun 10, 2018 at 17:41 | comment | added | jacob1729 | Notice that the discrepency arises because $P_1\neq P$. I.e. whatever's going wrong, the issue is how we're dealing with the massive piston. | |
| Jun 10, 2018 at 17:22 | comment | added | Chet Miller | Let's be more precise. You have a small chamber of volume V attached to a large chamber of volume Ve, and the two chambers interact with one another through a frictionless piston. Both chambers are initially at temperature T1 and pressure P1, are insulted from the rest of the surroundings, and you place an added weight on a second piston connected to the small chamber. This causes the volume in the small chamber to decrease, and this results in a change in the volume and pressure (and temperature) of the gas in the larger chamber. Is this anything like what you are describing. | |
| Jun 10, 2018 at 16:04 | history | asked | Gamabunto | CC BY-SA 4.0 |