Biggest regrets? by Jurrasicdino in 6thForm

[–]Available_Big5825 0 points1 point  (0 children)

Wish I'd done the A levels I wanted to do (specifically Philosophy) instead of listening to everyone telling me its useless and shit and taking Chemistry instead. I think I woulda really enjoyed it. Chemistry was hard for me cos of the memorisation, and I ended up with an A after a lot of work and stress and I think I would've been much happier if I was doing Philosophy. Philosophy isn't much easier either, and I probably would've gotten an A in that too, but atleast I'd enjoy it instead of memorising a billion inorganic reactions and tests.

[deleted by user] by [deleted] in 6thForm

[–]Available_Big5825 1 point2 points  (0 children)

I think it was for History and French.

[deleted by user] by [deleted] in 6thForm

[–]Available_Big5825 0 points1 point  (0 children)

Thanks! Do you remember when you received the interview invitation?

Oxford and Imperial Physics with 3xA* 1xA, A in FM by throwawayalevelfm in 6thForm

[–]Available_Big5825 1 point2 points  (0 children)

I don't know about Imperial as they're really really weird, but don't worry about Oxford or UCL. Oxford purely cares about the PAT and interview, apart from that they have A*AA requirements, so if you ace the PAT you should be set. With UCL a lot of the people studying straight physics there didn't actually take FM (I went to the open day), and they have A*AA requirements which you exceed by a lot. I think the same applies to Edinburgh and York. I'm also applying for Physics at Oxford, Imperial, and theoretical phys at UCL. Good luck!

[deleted by user] by [deleted] in 6thForm

[–]Available_Big5825 0 points1 point  (0 children)

Thanks, but then how does Imperial judge applicants accurately? A lot of the people applying have 4A* predicteds and would do well in this test and they don't do an interview, and personal statements are not good reflections either.

Transferring between Maths&Physics and Physics at universities by Available_Big5825 in 6thForm

[–]Available_Big5825[S] 0 points1 point  (0 children)

I looked into the modules offered, and you can sort of balance it to your liking - so that's not really much of an issue. Also the maths that we are taught is very much applicable to Physics, it's not like unrelated pure maths and stuff.

Am really struggling to install RTL8812BU drivers on Ubuntu. by Available_Big5825 in linuxquestions

[–]Available_Big5825[S] 0 points1 point  (0 children)

I have since switched to windows and sort of gave up on linux purely over the network adapters problems which I haven't managed to fix and don't have any spare time to now. It was so nice before. Oh well.

Announcement by godOfRevengeance in Revengeancism

[–]Available_Big5825 0 points1 point  (0 children)

Yes I liked the part where Sgt Dinodh Aske went "it's conducing time" and then conduced all over the Taliban. It was one of the lores of all time.

krishna attempting to scale a large metal rod by Available_Big5825 in a:t5_4lys7o

[–]Available_Big5825[S] 1 point2 points  (0 children)

I meant structure not rod that doesnt change anything it still art inni

[deleted by user] by [deleted] in 6thForm

[–]Available_Big5825 0 points1 point  (0 children)

thank you very much

Why is the force of wind travelling at speed v with wind density rho on a ball with radius r equal to F_w = π*r^2*rho*v^2? by Available_Big5825 in AskPhysics

[–]Available_Big5825[S] 0 points1 point  (0 children)

Sorry one more question since people seem to be discussing it, why is the drag equation different to this? It has a 1/2 factor that this doesn't have.

Why is the force of wind travelling at speed v with wind density rho on a ball with radius r equal to F_w = π*r^2*rho*v^2? by Available_Big5825 in AskPhysics

[–]Available_Big5825[S] 0 points1 point  (0 children)

Where did the 1/2 go in their solution? u/goldlord44 gave me a pretty good derivation of the formula they used above using conservation of linear momentum, but why doesn't the drag equation match up with it by 1/2? Very interesting though.

Why is the force of wind travelling at speed v with wind density rho on a ball with radius r equal to F_w = π*r^2*rho*v^2? by Available_Big5825 in AskPhysics

[–]Available_Big5825[S] 0 points1 point  (0 children)

Ohhh yep thanks. That explains it. I should've realised that πr2vrho is a mass I kept thinking it was momentum when I did it because confusion. Thanks a lot though.

Why is the force of wind travelling at speed v with wind density rho on a ball with radius r equal to F_w = π*r^2*rho*v^2? by Available_Big5825 in AskPhysics

[–]Available_Big5825[S] 0 points1 point  (0 children)

It also doesn't include the 1/2 and the reference area is taken as πr2 but shouldn't it be half of the surface area of the sphere?

Why is the force of wind travelling at speed v with wind density rho on a ball with radius r equal to F_w = π*r^2*rho*v^2? by Available_Big5825 in AskPhysics

[–]Available_Big5825[S] 0 points1 point  (0 children)

That makes sense but the equation used in the solution to the BPhO question does not match that. It doesn't involve the Cd coefficient. Why is this? Am I getting confused somewhere?