OCR Physics A G485 - Frontiers of Physics - 18th June 2015 Watch

Alex621
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#141
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#141
(Original post by Mehrdad jafari)
Hi
I uploaded them on some chemistry thread i think. I will send you the link in few moments


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thanks, i managed to find the c1,c2,c3 and c4 papers you posted, do you by any chance have m1 and s1 too?
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Absent Agent
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#142
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#142
(Original post by AlexParmenter)
thanks, i managed to find the c1,c2,c3 and c4 papers you posted, do you by any chance have m1 and s1 too?
Ok, let me find the actual link i downladed from
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Absent Agent
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#143
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(Original post by AlexParmenter)
thanks, i managed to find the c1,c2,c3 and c4 papers you posted, do you by any chance have m1 and s1 too?
I've just checked the link and unfortunately the applied units are unavailable. I'm sure they will be available before the actual exams.

http://vle.woodhouse.ac.uk/topicdocs/maths/home.htm
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Absent Agent
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#144
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#144
(Original post by nmjasdk)
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?
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Alex621
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(Original post by Mehrdad jafari)
I've just checked the link and unfortunately the applied units are unavailable. I'm sure they will be available before the actual exams.

http://vle.woodhouse.ac.uk/topicdocs/maths/home.htm
Thanks for checking for me anyway, I'll have to keep pestering my teacher until he emails them to me haha
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nmjasdk
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#146
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#146
(Original post by Mehrdad jafari)
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?
thanks but it has to be aqa ones not ocr.
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nmjasdk
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#147
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#147
(Original post by Damien_Dalgaard)
first exam tutors or something
nope its called ebrahim college
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Absent Agent
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#148
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#148
(Original post by nmjasdk)
thanks but it has to be aqa ones not ocr.
I'd even had the papers at the time if you mentioned they were AQA Ones


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imfrassin
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#149
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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?
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giantbecky
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#150
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(Original post by Mehrdad jafari)
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??
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Absent Agent
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#151
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#151
(Original post by giantbecky)
Are you saying that you have the link to OCR (non mei) 2014 papers??
No, I have the files


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Username13
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#152
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#152
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?
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Absent Agent
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#153
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#153
(Original post by Username13)
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.



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Username13
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(Original post by Mehrdad jafari)
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.



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thanks
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gothmog827
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#155
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does anyone have any notes on medical physics that actually agrees with the mark scheme? I find the book is really bad on this... Thanks
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ForgottenApple
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(Original post by gothmog827)
does anyone have any notes on medical physics that actually agrees with the mark scheme? I find the book is really bad on this... Thanks
Copy and paste the mark scheme.
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BecauseFP
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#157
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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.
Attached files
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randlemcmurphy
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(Original post by BecauseFP)
...
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.
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BecauseFP
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(Original post by randlemcmurphy)
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?
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randlemcmurphy
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#160
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(Original post by BecauseFP)
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?
I don't think they give the answers...
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