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

nothepreacher
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#1321
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#1321
(Original post by JB199612)
yeah my bad, i meant does anyone has the 2014 paper?!
Yep a few tricky stuff which wouldn't be too bad if you have good understanding of fields and stuff. It is on page 28.
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Raizel
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#1322
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#1322
https://86702370e68cc0f4d10e729b4f36...%20A-level.pdf

6ci
why was it not converted to meters?
1.7cm and 6.5cm used.
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jcwh97
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#1323
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#1323
(Original post by nothepreacher)
So I shouldn't waste my time going through diffraction patterns or interference right now?
Well my opinion is that you are wasting your time. They can intergrate g482 but diffraction/interference requires entire questions which they won't do. They tested us on that last year when we were yr12 they wont want to test us again.
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randomuser1
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#1324
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#1324
(Original post by jcwh97)
Yeah I meant when referring to waves etc. it will only be the quantum physics chapters. Nothing more like interference etc. Just the standard equations
yeah synoptic questions are almost always calculations, occasionally definitions
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Malgorithm
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#1325
(Original post by Raizel)
https://86702370e68cc0f4d10e729b4f36...%20A-level.pdf

6ci
why was it not converted to meters?
1.7cm and 6.5cm used.
They used 1.7 cm and 6.5 cm^-1. Since you multiply them together in the question, the units cancel so there's no need to convert to metres.
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Chung224
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#1326
Best of luck to everyone, This is my last but most important exam :/, more stressed than when i had 10 exams wtf....
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L'Evil Fish
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#1327
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#1327
Finished past papers with my best yet!

I much rather hard papers, dropped 2 on June 14
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Jim997
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#1328
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#1328
Name:  image.jpg
Views: 98
Size:  130.4 KB

This completely clears up the mass spectrometer for me.
The vaporised gas is ionised ( probably by firing electrons at it)
It is then accelerated across a Pd.
This gives all of the ions the same kinetic energy but dependant on their mass the velocity will fluctuate.
The passed through a magnetic field which causes the ions to each experience different forces dependant on their velocities.
Only ions with the perfect velocity will reach the detector. Can vary the chosen ions wanted by altering the B field.

Concurrence or is that wrong people?
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Malgorithm
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#1329
(Original post by L'Evil Fish)
Finished past papers with my best yet!

I much rather hard papers, dropped 2 on June 14
Can't go far wrong with that. Congrats!
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Jim997
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#1330
Really looking forward to this exam tbh, just hope I can nail the worded rubbish haha
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Malgorithm
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#1331
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#1331
(Original post by Jim997)
Really looking forward to this exam tbh, just hope I can nail the worded rubbish haha
Medical Imaging - the bane of my life, haha.
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L'Evil Fish
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#1332
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#1332
(Original post by Malgorithm)
Can't go far wrong with that. Congrats!
Shame it wasn't the real paper!

I think tomorrow should be fun
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simobob16
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#1333
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#1333
(Original post by sarcastic-sal)
Only ones that spring to mind is perhaps
Attachment 430887
(sorry about it being sideways)
And deriving W=1/2 CV^2 from W=1/2 QV and Q=VC
Thanks a lot
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Malgorithm
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#1334
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#1334
(Original post by sarcastic-sal)
Only ones that spring to mind is perhaps
Attachment 430887
(sorry about it being sideways)
And deriving W=1/2 CV^2 from W=1/2 QV and Q=VC
I really hope this comes up. As a prospective Maths student at uni, this will be a nice bunch of marks.
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ETRC
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#1335
(Original post by Malgorithm)
Medical Imaging - the bane of my life, haha.
medical imaging is the best bit smh
you just need to memorise stuff no need to think about it
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jcwh97
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#1336
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#1336
(Original post by Jim997)
Name:  image.jpg
Views: 98
Size:  130.4 KB

This completely clears up the mass spectrometer for me.
The vaporised gas is ionised ( probably by firing electrons at it)
It is then accelerated across a Pd.
This gives all of the ions the same kinetic energy but dependant on their mass the velocity will fluctuate.
The passed through a magnetic field which causes the ions to each experience different forces dependant on their velocities.
Only ions with the perfect velocity will reach the detector. Can vary the chosen ions wanted by altering the B field.

Concurrence or is that wrong people?
Sounds good, although I don't think we will be required to know a great deal about mass spectrometers. I could be wrong of course but if it comes up like it has done before it will be pure calculations. With the odd 2 marker. Thats just what I think.
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leroythelost
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#1337
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#1337
(Original post by L'Evil Fish)
Finished past papers with my best yet!

I much rather hard papers, dropped 2 on June 14
Damn 98!..my best mark today was 84 in jan 2012.
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Malgorithm
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#1338
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#1338
(Original post by ETRC)
medical imaging is the best bit smh
you just need to memorise stuff no need to think about it
Yeah, but I'm bad at memorisation XD. I prefer questions where there's logical steps to get to the answer as opposed to just recall.
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phy6
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#1339
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#1339
Good luck tomorrow everyone!
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jcwh97
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#1340
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#1340
(Original post by L'Evil Fish)
Shame it wasn't the real paper!

I think tomorrow should be fun
LOL just dont get complacent. I did with G481 last year and ended up with a B in it. Thankfully g482 saved me.
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