u/Character_Drive6141

I have a 2007 nissan maxima. I have been on 4 long drives this summer. On the second one, after about an hour on the highway, the rpm shot up. After manually shifting the gears around, it seems to be stuck in 4th gear (shifting up to 5/6 changes nothing). This happened on both other drives too, but before an hour or on shorter drives everything seems fine. There is no check engine light and it's not throwing codes or anything.

I am on another long drive and it just happened again. Is there any reason anyone might know why this is happening?

hey, I wanted to try to make bleach from scratch at home. I worked at a bleach plant for a while so I am familiar with the process, but I don't have a membrane system to separate the Cl2 very well. Would I need to get one if I wanted to collect some Cl2 for the process?

Also, does anyone know a good at home chem thing to buy that would let me bubble the captured cl2 into some 50% NaOH? There will be a lot of salt precipitating out of the reaction, so I can't just run a tube to the bottom of some glassware. Btw, I have absolutely nothing yet. I have done simple at home experiments like burning different things to get colored fires, but I moved from home now so no glassware and back at ground 0.

I'm a guy, but I want my next PC to be a girl. I don't want to just use my normal voice and insist I'm a girl. I also don't want to be really grating or annoying (I'm fine being cringe, I just don't want to make the others at the table want to kill themselves). I don't need to be a full on VA, but I want something. Way I see it there are two paths. Either go absurd (like Nott from CR) or just kinda try to make my voice a bit softer to kinda suggest at a more feminine voice, even without significantly raising pitch (which I doubt I could do well).

If anyone has some yt vids I could watch or exercises to practice stimulating range, that would be helpful too. Thanks!

Edit: seems like most people say speaking softer/more breathy with a slight change in tone (mostly ignoring pitch) should be good. I'll be practicing a bit. Character should be introduced next Friday so wish me luck

To start my parents behavior towards me and my siblings is very erratic. They always say they want to help us financially, but then threaten removing that help whenever we aren't doing exactly as they want.

Anyway, I had my own situation with them. I am going into my senior year of college and just need enough money to finish. I talked to my financial aid office and they agreed it rose to a level that warranted a dependency override. I finally finished that whole process and now, knowing that, they reached back out saying they want to help me pay for college again. Obviously Pell won't pay for everything, so I'm still going thousands in debt as it is. I want to take it but like, especially since I'm now not as worried about what will happen if they take it away. But, can I? Is that even legal? I really don't know what to do here.

I have a kinda evil changling character in my dnd game. He thinks very much that perception IS reality and takes all actions as such. He has the telepathic feat and doesn't see detect thoughts as violating privacy. Also he is naturally very untrusting. As the worst example, after a character's sister died he used illusions to make the character believe he summoned the sister's spirit so the character was able to talk to her one last time. In his mind it worked. It calmed down the mourning brother, and my character just wanted to help him feel better. Obviously not a great guy.

People just found out about that last example and were a bit miffed (we ended up reviving her and she was like nah fam that wasn't me). The problem is the party is just not very confrontational. Even the "furious" character was totally composed and forgiving when that was revealed ("I am very mad at you, but I trust your intentions"). I even went up in a later scene and said to his face that I was entirely justified and his response was nearly just a no with a sigh. Like all his other reactions he is super protective of the sibling bond, but just not here? I clearly communicated OoC that I WANT the party to react negatively to his bad actions. Ultimately I just don't think things have gotten bad enough for the character to rethink his perspective.

There are some other players I know will get angry and play into it. Perhaps I need to mess with them?

It also makes it hard to build drama when my character is apologetic, but only because he knows that helps pacify problems faster rather than for really feeling apologetic. I need someone to read MY thoughts and call me out, lol.

What I REALLY need is a situation where he will want to help someone via deception (par for the course), but for some reason that character then having that disconnect from reality leads to a big tragedy. Idk, just looking for ideas. My plan is to have something blow up in my face, leave change persona, and come back. Then slowly cast geas on everyone and once that's done then reveal myself and beg them to let me help again . Or smth idk

Btw, this is a very RP heavy table and these sorts of adversarial actions are well within the bounds of the game. Please don't rant that this is bad table etiquiette. We had PCs trying to assassinate each other for a bit, and it was fun.

Been trying to learn QM from the MIT videos on yt, but I do not understand the operator math. Specifically I am completely confused when they started talking about hermiticity. I looked it up and couldn't understand what was meant. I have taken linear in college, but there is definitely a math I'm missing here. Where do I need to learn this?

Can't guarentee I will understand, but half of you are PhDs. Haven't met a single one that isn't excited to talk about their research, so I wanted to ask.

I have been asking questions and lurking in this sub a few months and have been asking questions as I tried to learn. But I feel like 90% of them are casuals trying to learn GR, QM, or QFT without an applicable background math understanding. This includes me btw. Farthest class I've taken is a calc based e-mag course.

But like is it still fun to do? What sort of questions are you hoping people will ask?

Playing a necromancer. I want to be able to keep people barely alive (straight jacket and tied in a bag of holding) to become undead or, once I get it, puppet with magic jar. Ignore that this is evil. What is the best way to go about this. Flesh to stone then greater restore or kill then gentle repose and revivify both cost money. I can do that, but not ideal. Are there better ways to keep people on life support?

So I have been trying to understand GR and I think the ultimate goal for my understanding is to be able to take the EFE and rebuild the schwarzchild answer. My diff eq understanding is still struggling a bit to do that, but regardless. The endeavor has left me with two questions:

1. does anyone have a good way to visual spacetime bending? I've obviously seen the ball on trampoline but because space-time bends intrinsically rather than into another dimension it makes it hard to visualize what the coordinate system is actually doing.

2. Are there other topological types of intrinsic bends that could produce different effects (in theory)? Also, are there other macro bends that could allow everything to be flat locally but still have some effect at long distances? (I read a paper on AdS curvature and it being a hyperbolic saddle, but I didn't get it, cause I feel like we'd totally see the effects if parallel wasn't parallel. Then again, we only really see things from one point so depending on how macro it'd be hard to see)

Edit: Yes, I mean negative mass

The obvious one is that it's gravity would somehow be repulsive to normal mass energy and attractive to itself, but how would the others work? How would they interact with normal energy? Would it somehow destructively interfere and disappear?

I know this is all just theoretical so it's anyone's guess, but are there any existing theories or models?

I am trying to make a simplified computational model of Alpha Centauri AB (ignoring C) in python. I was wondering where I could find this data. I looked it up and couldn't find it super quick, so I was wanting to see if anyone knew a good, accurate, and complete source for this kinda stuff.

I understand Newtonian tidal forces. The closer side of an object is an an area with higher gravity and thus is pulled more strongly. This causes stretching.

However, when you get super close to a black hole you get massive time dialation that starts to outweigh the attractive gravitational effects. If the further side of the object perceives the closer side of the object as moving through time more slowly, and the closer side percieves the outer side as moving through time more quickly, then will the outer side be accelerating more quickly at any point near the asymptote?

I understand there is no problem crossing the event horizon from the perspective of the proper time of an object, but their is from ANY outer coordinate time. This includes the other parts of the object itself right? (Can we ignore that any object would have been utterly destroyed long before, I am just asking in theory)

Just wondering. I did it in wolfram and ended up with a tanh. This is beyond my Calc 2 methods. How would I go about solving it?

I have a lenovo yoga i9. I realized the left side got really hot when I used it (hurts fingertips to type, task manager said 64 C). I felt it and the air isn't moving on the left side. Any reason this would happen? Any way to fix?