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# AQA AS Physics Unit 2 (PHYA2) June 9th 2016 Resit paper

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Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. (Original post by Ben-Jam-In)
this is a quote from the revision guide referring to a book on a table "this looks like newtons third law but it is not. Because both forces are acting on the book, and they're not of the same type. This is two separate interactions. The forces are equal and opposite, resulting in zero acceleration, so this is showing newton's 1st law" In other words it was not obeying newtons third law
Oh yeah that is true. So is the answer to the question on the paper regarding why Newton's third law is not obeyed - 'The two forces are not of the same type.' ? I put not the same magnitude which is probably wrong then.
2. (Original post by WillRose)
pics if u can
3. (Original post by CourtlyCanter)
Oh yeah that is true. Does that answer to the question on the paper regarding why Newton's third law is not obeyed is probably 'The two forces are not of the same type.' ? I put not the same magnitude which is probably wrong then.
"Not of the same type"? Pretty sure you can put the magnitude thing. How is a reaction force the same as the weight anymore than air resistance is the same as thrust? Strange.
4. Anyone got a copy of the paper?
5. Q1 - Moments (a) centre of mass [1] (b) 196N [2] (c) boy balances [3]

Q2 - Projectiles (a i) 11.84 ms is about 12 ms-1 [2] (a ii) 10.73 ms-1 [2] (b i) 1.3 m height [2] (b ii) 13.9m horiz distance [1] (b at top, a at bottom) [2] (d) drawing graph - like a stretched V shape with straight lines [2]

Q3 - Rocket questions (a) 0.21 ms-2 [2] (b) newtons law Q's [3] (d) rocket will slow down, 670 force slows down enough [3]

Q4 springs (a) energy is transfrered not destroyed [2] (b i) velocity = 3.3 ms-1 [1] (b ii) 1.83 yup [1] (b iii) 0.183J [3] I can't believe you get a mark for Joules here!!!

Q5 6 marker - graph goes higher I think? [6]

Q6 waves - (a) progressive waves moving through medium [2] (b) (I) 0.6mm [1] (ii) 0.08m [1] (iii) 22.7 Hz [1] (iv) 1.81 ms-1 [1]

(c) sounds r longitudinal, sounds can interfere [1] (d) higher frequency = less diffraction so lower amplitude and shorter spread [3]

Q7 difraction grating (a) tick violet [1] (b) constructive interence question [3] (c) 17.1 [2] (d) n = 3rd order [3]

Q8 refractive index diamond (a) 24.4 degrees [2] (b) 18.5 degrees [2] (c) draw the path [2]

(d) moissanite refracts more, lower critical angle [2]

(e) IR speed in core = 4.65x10^8 [1] (e) wavelength in core 2x10-6 mm [2]

(f) cladding, to protect core from damage [1]

Not perfect as it's a quick run through, maarks are in square brackets
6. (Original post by CourtlyCanter)
Oh yeah that is true. Does that answer to the question on the paper regarding why Newton's third law is not obeyed is probably 'The two forces are not of the same type.' ? I put not the same magnitude which is probably wrong then.
ahh man, I think I might have done the same. Do you remeber what you put for the last question on that page? The one that said why the forces acting on the aircraft wasnt a pair of forces.
7. (Original post by boyyo)
ahh man, I think I might have done the same. Do you remeber what you put for the last question on that page? The one that said why the forces acting on the aircraft wasnt a pair of forces.
That was my answer to that last question on the page. 'The forces have different magnitudes.' Did you think I was answering another part of the question?
8. (Original post by MiniMan64)
Q1 - Moments (a) centre of mass [1] (b) 196N [2] (c) boy balances [3]

Q2 - Projectiles (a i) 11.84 ms is about 12 ms-1 [2] (a ii) 10.73 ms-1 [2] (b i) 1.3 m height [2] (b ii) 13.9m horiz distance [1] (b at top, a at bottom) [2] (d) drawing graph - like a stretched V shape with straight lines [2]

Q3 - Rocket questions (a) 0.21 ms-2 [2] (b) newtons law Q's [3] (d) rocket will slow down, 670 force slows down enough [3]

Q4 springs (a) energy is transfrered not destroyed [2] (b i) velocity = 3.3 ms-1 [1] (b ii) 1.83 yup [1] (b iii) 0.183J [3] I can't believe you get a mark for Joules here!!!

Q5 6 marker - graph goes higher I think? [6]

Q6 waves - (a) progressive waves moving through medium [2] (b) (I) 0.6mm [1] (ii) 0.08m [1] (iii) 22.7 Hz [1] (iv) 1.81 ms-1 [1]

(c) sounds r longitudinal, sounds can interfere [1] (d) higher frequency = less diffraction so lower amplitude and shorter spread [3]

Q7 difraction grating (a) tick violet [1] (b) constructive interence question [3] (c) 17.1 [2] (d) n = 3rd order [3]

Q8 refractive index diamond (a) 24.4 degrees [2] (b) 18.5 degrees [2] (c) draw the path [2]

(d) moissanite refracts more, lower critical angle [2]

(e) IR speed in core = 4.65x10^8 [1] (e) wavelength in core 2x10-6 mm [2]

(f) cladding, to protect core from damage [1]

Not perfect as it's a quick run through, maarks are in square brackets
The IR speed in the core can't be 4.65x10^8, that's greater than c and light slows down in the core due to the higher refractive index compared to air.
9. (Original post by MiniMan64)
Q1 - Moments (a) centre of mass [1] (b) 196N [2] (c) boy balances [3]

Q2 - Projectiles (a i) 11.84 ms is about 12 ms-1 [2] (a ii) 10.73 ms-1 [2] (b i) 1.3 m height [2] (b ii) 13.9m horiz distance [1] (b at top, a at bottom) [2] (d) drawing graph - like a stretched V shape with straight lines [2]

Q3 - Rocket questions (a) 0.21 ms-2 [2] (b) newtons law Q's [3] (d) rocket will slow down, 670 force slows down enough [3]

Q4 springs (a) energy is transfrered not destroyed [2] (b i) velocity = 3.3 ms-1 [1] (b ii) 1.83 yup [1] (b iii) 0.183J [3] I can't believe you get a mark for Joules here!!!

Q5 6 marker - graph goes higher I think? [6]

Q6 waves - (a) progressive waves moving through medium [2] (b) (I) 0.6mm [1] (ii) 0.08m [1] (iii) 22.7 Hz [1] (iv) 1.81 ms-1 [1]

(c) sounds r longitudinal, sounds can interfere [1] (d) higher frequency = less diffraction so lower amplitude and shorter spread [3]

Q7 difraction grating (a) tick violet [1] (b) constructive interence question [3] (c) 17.1 [2] (d) n = 3rd order [3]

Q8 refractive index diamond (a) 24.4 degrees [2] (b) 18.5 degrees [2] (c) draw the path [2]

(d) moissanite refracts more, lower critical angle [2]

(e) IR speed in core = 4.65x10^8 [1] (e) wavelength in core 2x10-6 mm [2]

(f) cladding, to protect core from damage [1]

Not perfect as it's a quick run through, maarks are in square brackets
Are you sure about those spring answers? I think I got the same but some people had some valid points about why it wasn't what we got.

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10. (Original post by CALI1198)
Teachers aren't even meant to be in the exam hall and arent allowed to see the paper till 24 hours after. He was sitting reading the paper while we were writing it 😂

Sent from my One using Tapatalk
lol teachers like that are just jokes. no f*cks given
11. (Original post by MiniMan64)
Q1 - Moments (a) centre of mass [1] (b) 196N [2] (c) boy balances [3]

Q2 - Projectiles (a i) 11.84 ms is about 12 ms-1 [2] (a ii) 10.73 ms-1 [2] (b i) 1.3 m height [2] (b ii) 13.9m horiz distance [1] (b at top, a at bottom) [2] (d) drawing graph - like a stretched V shape with straight lines [2]

Q3 - Rocket questions (a) 0.21 ms-2 [2] (b) newtons law Q's [3] (d) rocket will slow down, 670 force slows down enough [3]

Q4 springs (a) energy is transfrered not destroyed [2] (b i) velocity = 3.3 ms-1 [1] (b ii) 1.83 yup [1] (b iii) 0.183J [3] I can't believe you get a mark for Joules here!!!

Q5 6 marker - graph goes higher I think? [6]

Q6 waves - (a) progressive waves moving through medium [2] (b) (I) 0.6mm [1] (ii) 0.08m [1] (iii) 22.7 Hz [1] (iv) 1.81 ms-1 [1]

(c) sounds r longitudinal, sounds can interfere [1] (d) higher frequency = less diffraction so lower amplitude and shorter spread [3]

Q7 difraction grating (a) tick violet [1] (b) constructive interence question [3] (c) 17.1 [2] (d) n = 3rd order [3]

Q8 refractive index diamond (a) 24.4 degrees [2] (b) 18.5 degrees [2] (c) draw the path [2]

(d) moissanite refracts more, lower critical angle [2]

(e) IR speed in core = 4.65x10^8 [1] (e) wavelength in core 2x10-6 mm [2]

(f) cladding, to protect core from damage [1]

Not perfect as it's a quick run through, maarks are in square brackets
for question 6d - I don't agree that the amplitude was lower I thought it stayed the same? Also I said the wavelength was smaller so wave had smaller width and because A and B were fixed points you would see more waves between A and B.

also what was 7c - was that an angle?

The rest I think is right. Was the centre of mass definition only 1 mark?
12. 60-64 / 70 ... What ums do you think that is on this exam
13. (Original post by jamestordoff)
60-64 / 70 ... What ums do you think that is on this exam
Just a second I'll go contact the CEO of AQA and ask him for you.
14. (Original post by WhoDaresWins)
Just a second I'll go contact the CEO of AQA and ask him for you.
Erm , well I was intending on a non sarcastic answer from someone with a little class and humility but yeah sure ask away and let me know when you find out bro
15. (Original post by MiniMan64)
Paper is sitting in front of me

Questions?
Do you think you could post a copy of the paper on here?
16. (Original post by jamestordoff)
60-64 / 70 ... What ums do you think that is on this exam
Got to be 110 or above
17. (Original post by Qwertyabdc)
Got to be 110 or above
Thank you how did you find it
18. (Original post by jamestordoff)
Thank you how did you find it
Found it pretty hard ngl, think i got around the high 50's. Hoping for grade boundaries like last year. 58 for full ums
19. (Original post by CourtlyCanter)
That was my answer to that last question on the page. 'The forces have different magnitudes.' Did you think I was answering another part of the question?
lol yh, I thought you were talking about the similarity and difference one
20. (Original post by Simple Harmonic)
how did u find it?
i thought it was ok

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