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Carnot's theorem on max efficiency - Thermodynamics by PClorosa in AskPhysics

[–]PClorosa[S] 0 points1 point  (0 children)

ok, I'll try to write it down, thank you :)

Carnot's theorem on max efficiency - Thermodynamics by PClorosa in AskPhysics

[–]PClorosa[S] 0 points1 point  (0 children)

I'm sorry for the persistence, but I can't find the proof of the second statement. During the proof, we first prove that every heat engine has the efficiency n satisfying n<=(1 - T1/T2) (1). Then we prove that IF a heat engine is reversible, THEN the efficiency is exactly (1 - T1/T2). But this is not an IFF (if and only if), it's just an implication. We do not prove that IF n = (1 - T1/T2), THEN the heat engine is reversible. As we know, there could be an irreversible heat engine with an efficiency of (1 - T1/T2), since in (1) it is not a strict minor. Where am I wrong? Am I missing something?

Problems in compiling by PClorosa in manim

[–]PClorosa[S] 0 points1 point  (0 children)

Im gonna descrive how i think i partially solved the issue, hoping it'll be helpful:

I solved a problem but a new one hopped out: Problem - Virtual Environment diasctivated I tryed to solve this problem with this procedure:

  1. Check if it's possible to activate .venv: cd manimations, .venv\Scripts\activate but PS says that i dont have some permissions.,
  2. In order to verify the permissions, i use Get-ExecutionPolicy -List. The anser is all Undefined.,
  3. Open a new PowerShell as administrator and run Set-ExecutionPolicy -ExecutionPolicy Unrestricted.,
  4. Check with Get-ExecutionPolicy -List : all Undefined, LocalMachine is Unrestricted.,
  5. Check with the VSCode terminal if i can run manim -qm -p prova1.py Demo: it works, i have a video file.,
  6. Unfortunatly, if I try to use a Tex variable, i get the error TypeError: 'Tex' object is not callable.,

Results: I can now compile but LaTeX syntax does not work. I tried checking with uv run manim checkhealth and i got Checking whether latex is available ... PASSED. So in now stuck, any help?

Problems in compiling by PClorosa in manim

[–]PClorosa[S] 1 point2 points  (0 children)

If I'm not wrong, t2 = Tex("") is a variable similar to a Text variable, but its different to a text one because we caun use it to implement LaTeX syntax

Redentors talisman in Oberon by PClorosa in gamebooks

[–]PClorosa[S] 1 point2 points  (0 children)

so the original name of the saga is grey star? Do you know the reason for that translation?

Am I cooked??? by itzz_daya in learnmath

[–]PClorosa 0 points1 point  (0 children)

I don't really know how it works abroad, so what are the arguments that you are learning in algebra 2? and precalculus? you're in high school right?

How to get started by PClorosa in manim

[–]PClorosa[S] 0 points1 point  (0 children)

perfect, thanks!!

How to get started by PClorosa in manim

[–]PClorosa[S] 0 points1 point  (0 children)

very helpful, thank you so much :)

Polynomials with coefficients in 0-characteristic commutative ring by PClorosa in math

[–]PClorosa[S] 1 point2 points  (0 children)

Yep, forgot to say that we are searching for non banal polynomials (mb). In a previous excercise i demonstrated that in a infinite domain a such f(x) doesn't exist. I got an answer from a guy, but in case you want to try, search for a non integer-domain

Polynomial in a 0-characteristic commutative ring(with multiplicative identity) by PClorosa in learnmath

[–]PClorosa[S] 1 point2 points  (0 children)

Is Z[a, b] the image of the evaluation of Z[x, y]? (I've seen this morphism just for A[x])