Physics and mathematics help

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Physics and mathematics help cond-marx 16-06-23 10:06:39 No.18018

Are you a comrade working on something for school or uni that utilizes math or physics?
Need help on a problem?
Developing a new mathematical theory of marxism?

Post here and ill try to help.

Love & Solidarity

Anonymous 16-06-23 12:20:04 No.18019

I want to learn physics properly because I was always bad at it both in school and uni and I feel embarrassed about it but I have no idea how to go about it.

cond-marx 16-06-23 14:20:46 No.18020

File: 1686925246645.jpg (60.97 KB, 255x255, SAVE_20230616_172003.jpg)

>>18019

I also did bad in high school in math and didnt even study physics. After graduation i just studied on my own with KhanAcademy. That was in 2016, so now you'll find way better resources online.

So if you have a little discipline and curiosity you can easily make up for that. It will give you good foundation for uni.

Anonymous 27-06-23 19:53:18 No.18461

File: 1687895598145.png (19.81 KB, 562x85, ClipboardImage.png)

How do I solve this? It's from this: https://www.jirka.org/diffyqs/html/slopefields_section.html

Anonymous 28-06-23 09:36:41 No.18467

>>18461
Not OP, but y' is just the differential of y. Find/calculate the integral and then plug in 0.

Use WolframAlpha to check your answer.
https://www.wolframalpha.com/calculators/integral-calculator/
Wolfram takes language input, you can just write "find the integral of y' = (y - 2x)" for example, or any other math equation, and it gives you a step-by-step solution, slope field, etc.

Anonymous 28-06-23 18:21:40 No.18487

>>18467
But it has y on the right side… And there's g(x,y) that could be any function involving y and x, which means that it could even be non-linear.

Anonymous 03-07-23 11:32:10 No.18528

I'm struggling with a physics problem.

You have a car weighing 2.000kg on a 22° incline (with negligible friction).

How much force would it take to pull the car up the incline to a height of 120m?

If you had a machine that could exert 180N of force for 6 hours before needing to be replaced, how many machines and how long would it take to pull a 100 cars a) 2000m on a flat plane, b) 100m up a 20° incline?

Show your working.

Anonymous 09-07-23 11:09:31 No.18603

I would love to post more about my field of research as a physicist, but it's so niche that I'd essentially doxx myself :(

Anonymous 09-07-23 11:37:56 No.18604

>>18461
What does Picard's little theorem say? What can you conclude about solubility?

Anonymous 09-07-23 13:23:33 No.18608

>>18604
But I don't know if g is continuous or differentiable!

Anonymous 09-07-23 14:25:01 No.18609

>>18608
Since this is the physics thread the answer is that a function is nicely behaved until stated otherwise

Anonymous 11-07-23 02:59:14 No.19004

>>18461
This could not have a solution at all depending on how "irregular" g may be. Is that the whole formulation of the problem?

Anonymous 11-07-23 03:00:12 No.19005

Awesome idea. I'm a phd in math, would love to help out in any anti capitalist projects that require math.

Anonymous 14-07-23 15:46:13 No.19050

>>19005
First of all you need to find a job at Lockheed Martin to destroy them from the inside

Anonymous 14-07-23 15:50:04 No.19051

>>19050
How?

Anonymous 14-07-23 16:11:33 No.19052

File: 1689351093308.pdf (269.38 KB, 197x255, Aurora-ScaleAnarchy_ful-ve….pdf)

>>19005
You could read through this and see if there's any interest to you.

Anonymous 23-07-23 11:53:25 No.19908

File: 1690113205410.png (32.48 KB, 887x118, ClipboardImage.png)

Anonymous 31-07-23 11:22:00 No.20080

Any opinions of experimentalists on the supposed high Tc SC? Kinda sounds too good to be true

Anonymous 31-07-23 14:48:17 No.20082

I've identified a need in my region for a product.
It would be assembled from parts imported from China presumably. Who would know what kind of parts specifically and could foresee obvious pitfalls? A mechanical or process engineer or something, or some kind of consultant?

Anonymous 01-08-23 20:31:01 No.20091

>>18461
protip: if the question doesn't say to prove something, it's most likely because you can't do so and it wants you to argue against the conclusion

Anonymous 16-08-23 20:03:48 No.20179

>>18461
Exercise 2.4.103
https://www.jirka.org/diffyqs/html/sec_mv.html#exercise-215

Am I dumb? mx''+kx=0, m=5000, x(0)=0.1, x'(0)=1, the general solution is known to be A*cos(ot)+B*sin(ot) where o=sqrt(k/m).

But if I try to solve this, I get A=0.1, and B=1/o. So k=m/B² but I only know m, both B and k are unknown? What am I missing?

Anonymous 27-08-23 15:37:02 No.20388

bump >>20179

Anonymous 17-06-24 20:30:01 No.22308

File: 1718656201166.png (21.67 KB, 869x66, ClipboardImage.png)

Why can't people just make up their minds??

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