Seems legit, looks like they have some notes for each part of the spec.. thanks! and haha I'm they won't mind!
I have a whole week until unit 4 so figured I don't want to leave it as last minute as I did today for unit 5! And ah my school doesn't do unit 4 for us during January, what are you aiming for?
I'm aiming for an A but I only need a B to get into uni. How did you find unit 5?
I'm aiming for an A but I only need a B to get into uni. How did you find unit 5?
I'm aiming for a B because that's all I need haha! And it was better than I thought it would go to be honest, I hadn't really prepared myself for it so I was expected a fail but a few of my friends taught me pretty much the whole of medical physics and the universe before the exam, so I got pretty lucky when that MRI question came up! But I know there's a chance I've only gotten a C so my plan is to smash Unit 4! How did you find unit 5?
I'm aiming for a B because that's all I need haha! And it was better than I thought it would go to be honest, I hadn't really prepared myself for it so I was expected a fail but a few of my friends taught me pretty much the whole of medical physics and the universe before the exam, so I got pretty lucky when that MRI question came up! But I know there's a chance I've only gotten a C so my plan is to smash Unit 4! How did you find unit 5?
I found unit 5 alright. I revised MRI, nuclear reactor and the universe and it all came up so I was happy. Definitely made some mistakes on the calculations but I'm hoping for an A
I got a C on unit 4 too, and I haven't looked at it since January haha, I really need to start!
How can u make notes on spec point 4.2.2 : g,h,i can someone please help me
G - just selecting and using that equation. You won't need to derive it, although it's from plugging g-F/m into F=GMm/r². Use it when You know the mass of the larger object, the distance between the two. H - When an object is falling to the Earth's surface, it will fall with an acceleration of a = F/m, and since F due to gravity = gm, substitute that in for F and a = gm/m, cancel the m's and you're left with g. I - you just need to realise that the force due to gravity = centripetal force, therefore GMm/r² = mv²/r. You can combine these equations a million different ways, and you sometimes need to realise that v = 2π/T and substitute it in sometimes. This is also the equation you derive Kepler's Third Law from. (T²/r³ = 4π²/GM)
On a side note, I'm bricking it for this exam after G485 :/ got a C in January and need an A overall.
Can they ask us to explain why T is independent of displacement in SHM?