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# AQA Physics PHYA5 - Thursday 18th June 2015 [Exam Discussion Thread] watch

1. (Original post by Christina30)
Yes but there was no R, not in sectionA, not in sectionB
Yeah there was, the exam code was PHYA5R
2. (Original post by gtkonline)
Please can somebody explain why the star was a white dwarf and not main sequence? It had an absolute magnitude closer to -10 than 15 so I thought it would be MS.
I also thought so. I said too cool to be a giant and too big to be a dwarf. Also the power output was comparable with the sun.
3. (Original post by CD223)
I got...

Thermal and Nuclear
Range of = 0.05m
Range of = 0.3m
Density =
Number of nuclei =
Energy used = 47000J

Temperature = 319K

Astrophysics
Maximum distance = I got totally wrong...
Diameter = 3.0m
In the 6 mark essay my period was 4 days, and my velocity was 114 kms-1
Magnitude = -0.008
Temperature = 16100K
Age of the universe =

So we got mostly the same, apart from the ranges and the diameter; my magnitude can be ignored it's a load of **** xD That's reassuring
4. (Original post by Sbarron)
It's slowly looking as though the answers wernt quite as straight forward as we all thought. That distance from earth one has annoyed me along with Afew others... I really really hope an A is 52 I've worked so hard and a few silly mistakes can cost you years of hard work 😔
I think there were a lot of funny questions that a lot of people will have messed up, and the written questions were also a tad confusing, so I think the boundaries will be low. I wish someone had a mark scheme though so I could work out what I got.
5. (Original post by Doomlar)
So we got mostly the same, apart from the ranges and the diameter; my magnitude can be ignored it's a load of **** xD That's reassuring
sorry! forgot to change a few -

1.45 for the density of nucleus and 2.27 for the number of nuclei!
6. (Original post by chizz1889)
Yeah there was, the exam code was PHYA5R
We had to write the R on the front our our paper as it wasn't there
7. Ours was PHYA5/1R

Sounds as though AQA dished out the same papers in different locations; but with different exam codes....

EDIT: For section A at least; for section B this is (of course) expected...
8. Unit 5 with turning points

JUNE-2014 A* 51, A 45
JUNE-2013 A* 54, A 49
JUNE-2012 A* 53, A 48
JUNE-2011 A* 61, A 55
JUNE-2010 A* 57, A 51

This year was harder than 2010, slightly easier than last few years :

Likely to be A* 56 and A 50 - cant see why it would be majorly different to this
9. (Original post by CD223)
I got...

Thermal and Nuclear
Range of = 0.05m
Range of = 0.3m
Density =
Number of nuclei =
Energy used = 47000J

Temperature = 319K

Astrophysics
Maximum distance = I got totally wrong...
Diameter = 3.0m
In the 6 mark essay my period was 4 days, and my velocity was 114 kms-1
Magnitude = -0.008
Temperature = 16100K
Age of the universe =
Do you think I might get marks for 0.05m and 1.0m for their ranges?

10. (Original post by CD223)
Agreed. Last year was easy compared.
I agree, I can't see the grade boundaries going up that much to be honest.
11. (Original post by simonli2575)
Do you think I might get marks for 0.05m and 1.0m for their ranges?

Probably. Not confident on my beta range.
12. (Original post by sam_97)
I agree, I can't see the grade boundaries going up that much to be honest.
I hope they dont because I made so many stupid errors.
13. (Original post by CD223)
sorry! forgot to change a few -

1.45 for the density of nucleus and 2.27 for the number of nuclei!
The number of nuclei definitely required reading off the graph, what about the density question?
14. (Original post by sam_97)
I agree, I can't see the grade boundaries going up that much to be honest.
The grade boundary was 52 for an a* last I think it will be at least 55 this year
15. (Original post by Emmanuel12344)
The grade boundary was 52 for an a* last I think it will be at least 55 this year
is this astro or turning points. I can see it going higher for turning points
16. (Original post by k9000)
is this astro or turning points. I can see it going higher for turning points
Astro
17. What are the requirements for an A* in physics? I'm not sure whether or not to get my hopes up
18. For anyone else who did the applied module; how do you think it compared difficulty wise to previous years?

Personally I found it harder than some of the previous years; but mainly due to mostly being word based questions (there didn't seem to be much maths this year).

I am better at maths than explaining stuff; but it could've been much worse I guess.
19. (Original post by CD223)
I hope they dont because I made so many stupid errors.
Same here, especially on astro with the first question and that white dwarf one!
20. (Original post by Sam.B57)
What are the requirements for an A* in physics? I'm not sure whether or not to get my hopes up
90% UMS average across three modules; so 270 ums at A2 (but you 'only' need 80% average across all modules).

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