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# The Physics PHYA2 thread! 5th June 2013 Watch

• View Poll Results: What mark do you think you got out of 70?
0-20
6
3.00%
21-40
12
6.00%
41-50
29
14.50%
51-60
79
39.50%
61-70
74
37.00%

1. (Original post by lebron_23)
[B][U][SIZE=3]PHYA1 =
Question 6 – Don’t even know, seemed cool..

6) First phase difference was 90 degrees or pi/2. Second was 270 degrees or 3pi/2
b) Oscillation between maximum and minimum amplitude; i.e moves up and down
c) Polarisation only occurs in transverse waves; mention something about plane of polarisation
d) Define frequency
e) 750m
.
For part a) I did 1/4 lambda and 3/4 lambda, would that be considered correct?
2. (Original post by pearson1995)
really hard

I needed a B in this.... dont think I got it.... how did everyone else find it?
i think it could have gone worse though! the 6 marker was pretty nice! i just need a B as well and think i should get it
3. doesn't intensity increase as it's deflected more?
4. I may of lost 4 marks being harsh with myself hopefully that doesn't affect my chances of a 120ums
5. (Original post by _JasmineMistry)
So people stressing over makes, what do you guys want to do at uni?
We want to study at cambridge so we need full(ish) marks

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6. (Original post by _JasmineMistry)
doesn't intensity increase as it's deflected more?
Not in the single slit no
7. what question did everyone think was the hardest in the paper?
8. in the 6 marker how many marks will it have been for stating newtons first law correctly, newtons second law correctly and state that the gradient of a velocity-time graph is acceleration?

also would i get the marks for saying 90 degrees 'out of phase', and 270 degrees 'out of phase'?
9. (Original post by _JasmineMistry)
So people stressing over makes, what do you guys want to do at uni?
Maths
10. (Original post by chatty95)
in the 6 marker how many marks will it have been for stating newtons first law correctly, newtons second law correctly and state that the gradient of a velocity-time graph is acceleration?

also would i get the marks for saying 90 degrees 'out of phase', and 270 degrees 'out of phase'?
First one 3-4 marks depends what you said I'm sure you wrote about it in a lot more sophisticated and detailed manner. Second bit 2 marks fine
11. Anyone want to do engineering?
12. What do you guys think the 120ums boundary will be?
13. (Original post by chatty95)
in the 6 marker how many marks will it have been for stating newtons first law correctly, newtons second law correctly and state that the gradient of a velocity-time graph is acceleration?

also would i get the marks for saying 90 degrees 'out of phase', and 270 degrees 'out of phase'?
You may get a couple marks for that but I think it was looking for how the laws have an effect and how the acceleration is changing i.e decreasing acceleration
14. (Original post by _JasmineMistry)
Anyone want to do engineering?
Ohh mee. ChemEng though? what about you?
15. Guys, for the question where you got 1.0j. What was the number of blocks you estimated? I estimated it was 40 blocks.
16. (Original post by IWantSomeMushu)
What do you guys think the 120ums boundary will be?
I would say 65ish?

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17. (Original post by Davelittle)
For prove the angle is 30 degrees I got 31.9, as did 3 other people.

Did anyone else?
I did too
18. (Original post by IWantSomeMushu)
What do you guys think the 120ums boundary will be?
Standard of 62 marks.
Aren't you the "self-teacher", hope you did well.
19. (Original post by IWantSomeMushu)
What do you guys think the 120ums boundary will be?
68 / 70
20. (Original post by Bookaky)
68 / 70
No way! Don't crush people's hopes like that. It was nowhere near as easy as you're making it out.

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