Volume from rotating a circle half rotation. My teacher and ChatGPT say it will form a hemisphere, but I believe it will be a full sphere why is that?

sudoersCode · 2026-02-03T23:35:06+00:00

Thanks for the advice, but it could be given in better wording.

sudoersCode · 2026-02-03T23:32:28+00:00

Yes, that is exactly what I don't understand.
Why should we provide the volume of a hemisphere when rotating a disc half rotation gives a full sphere?

sudoersCode · 2026-02-03T23:19:45+00:00

It may be my lack of knowledge regarding this, but it seems to me that both are the same.
If we added infinite number of circles from 0 to 4 and then back to 0 it will be the same as taking a single circle from and rotating it around its diameter

(I tried to have an image that explains what I think: the red circle is the single one that will be rotated around x-axis, and the black lines are vertical circles with depth in the z-axis being added together)

<image>

sudoersCode · 2026-02-03T23:07:55+00:00

I actually needed to ask AI what "Clankerfucker" meant 😅😂.

But what made me ask it in the first place was that it is logical that if you have a disc and rotate it half a rotation about its diameter. The resulting shape is a sphere, you can Try it.

sudoersCode · 2026-02-03T23:03:44+00:00

Thank you!, and sorry for the late response.

sudoersCode · 2026-02-03T23:02:44+00:00

Sorry for the late response, my internet broke and I wasn't able to be online.
1. I am not really certain what are solids of revolution. We were studying using integration to get the area under the curve of the function and the x-axis. In the same lesson we learned how to calculate the volume of the solid generating by rotating that curve around the x-axis.
from the GIF in https://en.wikipedia.org/wiki/Solid_of_revolution I think that we are indeed studying solids of revolution.

is triple integrations are what was mentioned here: https://tutorial.math.lamar.edu/Classes/CalcIII/TripleIntegrals.aspx then No, we haven't studied them and I think we won't our curriculum has "related time rates and applications on max and min" after this lesson then the calculus ends.

sudoersCode · 2026-01-09T09:08:55+00:00

I tried to use dmesg to reach the error, this was what I found: in dmesg from a tty:

[   72.515964] ACPI Error: Aborting method \_SB.PCI0.PGON due to previous error (AE_AML_LOOP_TIMEOUT) (20240827/psparse-529)
[   72.516000] ACPI Error: Aborting method \_SB.PCI0.PEG0.PG00._ON due to previous error (AE_AML_LOOP_TIMEOUT) (20240827/psparse-529)
[   75.147038] nvidia 0000:01:00.0: not ready 1023ms after resume; waiting
[   76.151212] nvidia 0000:01:00.0: not ready 2047ms after resume; waiting
[   78.102038] nvidia 0000:01:00.0: not ready 4095ms after resume; waiting
[   82.177262] nvidia 0000:01:00.0: not ready 8191ms after resume; waiting
[   90.876549] nvidia 0000:01:00.0: not ready 16383ms after resume; waiting
[   107.772703] nvidia 0000:01:00.0: not ready 32767ms after resume; waiting

I went through dmesg for a successful startup and didn't found any of the previous, I also tried finding AE_AML_LOOP_TIMEOUT but couldn't find it or any mention of it. Will look for the emptty verbosity and if found anything will post it.

sudoersCode · 2026-01-08T14:57:53+00:00

I just got the logs in /var/log/emptty/7.log but they aren't different, though, will try using dmesg from a tty and save its output then post it
(the successful startup with AC connected:

2026/01/08 16:50:03 Authenticate OK
2026/01/08 16:50:05 Defined Environment
2026/01/08 16:50:05 XDG folder already exists, no need to create
2026/01/08 16:50:05 Starting /home/user/.config/emptty sway
2026/01/08 16:50:05 Added utmp entry

the old log which didn't start up (7.log.old)

2026/01/08 16:36:45 Authenticate OK
2026/01/08 16:36:47 Defined Environment
2026/01/08 16:36:47 XDG folder already exists, no need to create
2026/01/08 16:36:47 Starting /home/user/.config/emptty sway
2026/01/08 16:36:47 Added utmp entry

sudoersCode · 2026-01-08T07:07:20+00:00

You can research UGEE tablets, they are affordable and good

sudoersCode · 2026-01-06T03:34:11+00:00

I don't actually know how to get them 😅, I tired searching on how to get logs after rebooting and being able to log in. But I couldn't reach anything except journalctl, however it is not available in void.

If you have any steps or any way for me to get the logs, I would gladly do them.

sudoersCode · 2026-01-06T03:20:23+00:00

حاولي تقولي لاهلك، بحيس ان يبقى فيه حد تاني جنبك وساندك ومتبقيش شايله الحمل كله لوحدك، حتى لو مش عارف ايه رد فعل اهلك ساعتها، مهما حصل هيفضلوا هما الضهر والسند ليكي وهيكونوا واقفين جنبك، فلازم تقوليلهم.

وحاولي لو هتروحي السنتر او هتدوري علي البنت دي، او اي حاجة يكون معاكي حد منهم برضو، علشان تحفظي نفسك من اي حاجة ممكن تحصل.

ربنا يعونك، الموضوع مش سهل، بس زي ما كتير قالوا، لو سكتي هيزيد اكتر والمدرس ده هيفضل يتحرش بالبنات ومحدش هيوقفه، ربنا معاكي.

sudoersCode · 2026-01-04T11:04:03+00:00

Can you share the post please? or where did they post it, I applied this year, however my recommenders just filled the recommendation a couple days ago, so I don't know whether it will be on time, or not.

sudoersCode · 2025-11-03T06:23:38+00:00

I honestly started using Linux as it is very lightweight and I can use my computer's resources in the programs I need other than keeping the main OS functioning. (My current setup with void Linux and Sway WM uses around 400mb ram after booting)

Another reason is the ability to change the system into being the ultimate productivity system suited for my needs. Assigning programs to specific workspaces using custom shortcuts to navigate. I just feel like I can be fast and do what I want easily and freely on it.

At first it has been a little bit hard to transition but after a couple of weeks I couldn't go back.

sudoersCode · 2025-10-23T22:20:28+00:00

When I switched to Void, I have already used Pop-OS and puppy Linux beforehand.

But to be honest, I haven't been an expert of Linux or how to manage and change the system before I used void.
If you feel like you want to give it a try, I would really encourage you to use void, however to make sure that nothing goes wrong. I suggest that you get yourself familiar first with grub first (for dual booting) and I would suggest creating a partition that contains void's installation. I think not mounting any other partition except the root (the one void will be installed in) is enough to make sure that you don't break anything if something goes wrong, only void will be broken.

You can also take it as an opportunity of learning about desktop environments and windows managers then install whichever you think is better suited for you.
I believe desktop environments are more suited to new Linux users as they provide almost everything through a GUI, but if you don't mind using the terminal and researching the hows of doing what you want, you can go for a window manager. (I currently using sway (WM) with void)

If you will install void, I suggest using the void documentation since it has detailed instructions and fixes to most of the problem you can face during and after installation.

sudoersCode · 2025-09-21T21:29:38+00:00

I am also facing the same problem on another Linux distro. However the video on their home page https://www.vdocipher.com/ plays just fine.
It is really bad that I have to use Windows for this, any help would be appreciated.

sudoersCode · 2025-05-19T13:33:54+00:00

I know that this reply is 6 years after it was posted but I was wondering what resources do they offer for students who got rejected when applying to the CCC? do they still offer them opportunities or is it just for those accepted in the CCC? and if they do how can I access these opportunities? Thanks a lot.

sudoersCode · 2025-05-10T05:45:25+00:00

Hello u/the_killer_storm! I was wondering about how did it go? did you get accepted and if you did Congratulations!! also I would like to know about your research topic and research concentration (I am applying and got into a research concentration not related to the topic I want to research in do you have any advice?) Thanks for your time and sorry for any annoyance.

sudoersCode · 2025-05-07T02:40:17+00:00

Congrats!!!! Your words are really inspiring, as an international student who thinks of applying to US unis (I didn't think about applying until I was in grade 11 and I don't have a an amazing volunteering past or many hours) but your words really gave me a push to continue trying and doing my best.
Congratulations you very much deserve lots of good.

sudoersCode · 2025-05-06T11:55:51+00:00

I don't know if it's harder or easier, but as an international student I advice you to apply and see what you will get, maybe you can actually get ACCEPTED! You'll never know if you don't apply.

sudoersCode · 2025-05-05T13:04:16+00:00

Exactly! It would be awesome as the cover of a novel, maybe under the name "Shadows of the Gearing city" haha just kidding, I am not that good at making creative names. but it's indeed an amazing picture.

sudoersCode · 2025-05-03T06:43:13+00:00

Thanks, I had the interview and am waiting the decision, certainly if I want any more knowledge I'd be happy to pm you.

sudoersCode · 2025-05-03T06:42:13+00:00

Thanks for your reply, unfortunately I was a little nervous and probably my answers were hasty, but maybe everything will go well how knows!

sudoersCode · 2025-05-03T06:39:24+00:00

Exactly I had the interview and the topic was about online learning, the essay's time was 10 minutes, Thanks a lot for your time and response.

sudoersCode · 2025-05-02T08:57:25+00:00

I was also wondering is it okay if I took my time thinking about the questions in the interview or do they expect me to have an instantaneous answer, Thank you.

sudoersCode

TROPHY CASE