does anyone happen to have 2014 papers for maths aswell.
btw thanks for posting these papers, one less thing to stress about.
i was looking for MEI maths papers that i found the non-MEI ones. would you send me a link of the thread related to these papers so that i will upload them on that thread?
i was looking for MEI maths papers that i found the non-MEI ones. would you send me a link of the thread related to these papers so that i will upload them on that thread?
can they ask you anything outside of what listed in the specification? The book has a lot of filler. If I know each point in the specification thoroughly will that be enough?
i was looking for MEI maths papers that i found the non-MEI ones. would you send me a link of the thread related to these papers so that i will upload them on that thread?
Are you saying that you have the link to OCR (non mei) 2014 papers??
a question about the formula E=MC^2, if anyone can help?
I understand you use it for nuclear fission/fusion where theres a change in mass.. but can you also use it to find the energy of an electron for example?
a question about the formula E=MC^2, if anyone can help?
I understand you use it for nuclear fission/fusion where theres a change in mass.. but can you also use it to find the energy of an electron for example?
You can use this equation when there is a change in mass to work out the energy equivalent of that mass change or you can use it where there is a change is energy to work out the mass equivalent of that energy change. So in the case of electrons you can either use this equation to work out the mass increased to the rest mass of the electrons ( if only electrons have velocity so the kinetic energy contributes to that increased mass), or you simply use it to work out the energy content of the electrons, that is the energy equivalent of the rest mass of the electrons.
You can use this equation when there is a change in mass to work out the energy equivalent of that mass change or you can use it where there is a change is energy to work out the mass equivalent of that energy change. So in the case of electrons you can either use this equation to work out the mass increased to the rest mass of the electrons ( if only electrons have velocity so the kinetic energy contributes to that increased mass), or you simply use it to work out the energy content of the electrons, that is the energy equivalent of the rest mass of the electrons.
I've got two things to ask, sadly one is a repost since this part of the forum seems quite dead.
1) "One of the points on the spec for G485 is this: "explain the use of deflection of charged particles in the magnetic and electric fields of a mass spectrometer" And I've been wondering, have they ever actually asked this? I can't find it on any of the current papers but I'm unsure as to the legacy, does anyone know what they can ask or what sort of answers they expect? I've heard that a very similar thing appears somewhere in OCR A2 Chemistry but I don't know if that would transfer to Physics."
2) Can someone explain the apparent discrepancy in the mark schemes here (sorry about the weird quality of this, I had to squeeze it all onto something I could print because I asked a guy about everything on here a couple of months ago)? One of them talks about photons releasing electrons while all the other make no mention of electrons, annoyingly I'd also argue that photons causing electrons implies the photoelectric effect which another of the papers has explicitly mentioned as being wrong.
1) If you have the official A2 guide, I would just remember everything about mass spectrometry the book offers. Alternatively, this may be useful.
2) I have come across the same issues as you. I know the exact question you are talking about, it is about a students suggestion. I think I have the reason my teacher gave me as to why in my notes. I will try and find it for you.
1) If you have the official A2 guide, I would just remember everything about mass spectrometry the book offers. Alternatively, this may be useful.
2) I have come across the same issues as you. I know the exact question you are talking about, it is about a students suggestion. I think I have the reason my teacher gave me as to why in my notes. I will try and find it for you.
Thanks man, can I ask where you got that pdf file from? I've been meaning to find them since the note there are usually very useful.
EDIT: Never mind, I found it, where do they put the answers to the questions that aren't in the question packs?