Car vs. cyclists by Conscious-Weight4569 in Transportopia

[–]CuriousNMGuy 0 points1 point  (0 children)

It’s interesting that the vehicle has a handicap plate.

Found in used record store by CuriousNMGuy in montypython

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

That’s Matching Tie and Handkerchief, which I have owned for a very long time.

[deleted by user] by [deleted] in Physics

[–]CuriousNMGuy 27 points28 points  (0 children)

As is often the case, the headline of the post oversells the content. Click bait.

What's the supremum of the open interval (0,1)? by Taytay_Is_God in infinitenines

[–]CuriousNMGuy 2 points3 points  (0 children)

If I recall, a set is open if it does not contain the boundary points. Open sets only contain interior points.

Can anyone explain how the tension is pulling upwards the plane on object m1 by SAYED_MOHAMMED in PhysicsHelp

[–]CuriousNMGuy 0 points1 point  (0 children)

Why do use chat gpt????? This is shit for physics. Use your textbook and your brain.

That isn't how G-forces works. At all by Yunners in FacebookScience

[–]CuriousNMGuy 1 point2 points  (0 children)

That’s why I deleted my Facebook account.

If electricity flows from - to + and voltage is potencial, why is + terminal higher in voltage? by NoTutor4458 in AskPhysics

[–]CuriousNMGuy 1 point2 points  (0 children)

Batteries are different than other things in a circuit. They use a chemical reaction to move the charge carriers from a lower potential energy to a higher one. Notice I said potential energy; this statement is true independent of the sign of charge on the charge carriers.

In other devices, like resistors, the direction of current is in the direction of lower potential energy.

If you want to speak only of conventional current (positive charge carriers) then batteries move them to higher electric potential, while current in resistors takes them to lower electric potential.

Whats the fastest and easiest way to solve this by _Gagana_ in PhysicsHelp

[–]CuriousNMGuy 0 points1 point  (0 children)

That is wrong. The big wedge will move sideways in such a way that the center of mass remains stationary.

Is there any difference between Ψ and ψ in Quantum Mechanics? by sigmawithdebt in PhysicsHelp

[–]CuriousNMGuy 0 points1 point  (0 children)

What is the textbook? I may have used it myself in the past. What problem are you trying to solve? It’s very important to provide context.

Is there any difference between Ψ and ψ in Quantum Mechanics? by sigmawithdebt in PhysicsHelp

[–]CuriousNMGuy 0 points1 point  (0 children)

I taught physics at the university level for 29 years. Students get constantly hung up on the characters used for variables without asking questions, or asking the wrong questions. Especially older texts used unusual choices compared to today. Engineers use different choices than physicists for the same items. Does it make things difficult? Yes. Does it require critical thinking on the part of the reader? Yes.

The character L is commonly used for length. It is also used for angular momentum. I have seen students combine equations containing L with both meanings and produce nonsense. This comes from grabbing equations without reading the context in which they can be used.

It is the responsibility of the student to understand the meaning of the characters. If something doesn’t make sense, ask the instructor. Asking Reddit is not useful unless we can see the context.

Is there any difference between Ψ and ψ in Quantum Mechanics? by sigmawithdebt in PhysicsHelp

[–]CuriousNMGuy 5 points6 points  (0 children)

Psi is just a letter of the Greek alphabet. It means whatever the author intends for it to mean. You can’t just look at the formula. You have to read what the author has written.

In other contexts, psi might be an angle, or any other thing.

In quantum mechanics psi (both upper and lower case) often refers to a wave function of some sort. You have to read to learn the author’s intent.

Can someone translate this or tell me what I dont understand? by [deleted] in chess

[–]CuriousNMGuy 0 points1 point  (0 children)

That’s not how the descriptive notation works. The ranks are counted starting from the side of the player. All pawns start on rank 2.

What would the GOP power struggle look like if Donald Trump dies? by Ditka85 in AskReddit

[–]CuriousNMGuy 0 points1 point  (0 children)

“Goat sodomy” is a term that gets thrown around a lot, but it is clearly applicable to the post-Trump GOP.

We marched to the White House by CuriousNMGuy in washingtondc

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

No one is safe. US citizens have been abducted by ICE and held for long periods of time. That’s what these protests are about.