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# Unit 5 Physics Edexcel A2 and Edexcel IAL Watch

1. (Original post by oShahpo)
Guys what was the very last question? Was there a question about the conditions of fusion? I seem to have missed that. Was that right after the joules calculation?
Yes , explain condition required for fusion reaction (something like that ) 2 marks
2. (Original post by Pudge666)
Yes , explain condition required for fusion reaction (something like that ) 2 marks
Ah well..
3. (Original post by oShahpo)
Guys what was the very last question? Was there a question about the conditions of fusion? I seem to have missed that. Was that right after the joules calculation?
yes conditions of fusion
also what was harder according to u, this or last year's paper
4. (Original post by ajaxkiller)
yes conditions of fusion
also what was harder according to u, this or last year's paper
They're very close, they both have quite tricky questions. But I think this year's harder for one simple reason, the tricky questions are given more marks.
5. (Original post by oShahpo)
They're very close, they both have quite tricky questions. But I think this year's harder for one simple reason, the tricky questions are given more marks.
6. (Original post by Middriver)
No, but I remember some of them.
The mean square speed is doubled, and the energy ratio is 9 I think.
7. (Original post by Middriver)
I remember getting a lot of Ds but it might be because I am inept at multiple choice questions and balancing my time hehe
I got something like 4 rads^-1
-3.0 ms^-2
16 times more for the diameter of a star one
energy is 9 and I cannot remember anything else
8. (Original post by PhysicsIP2016)
I remember getting a lot of Ds but it might be because I am inept at multiple choice questions and balancing my time hehe
I got something like 4 rads^-1
-3.0 ms^-2
16 times more for the diameter of a star one
energy is 9 and I cannot remember anything else
16?
Hm I think it was 4 no?
Doubling diameter means double r no?

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9. (Original post by physicsmaths)
16?
Hm I think it was 4 no?
Doubling diameter means double r no?

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I said that d=2r so doubling 2r makes 4r? No?!
Im a retard I hate myself I actually put 4 as well then crossed it out because of my stupid reasoning bye bye Cambridge
10. (Original post by physicsmaths)
16?
Hm I think it was 4 no?
Doubling diameter means double r no?

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I got 4 as well
11. (Original post by Pudge666)
I got 4 as well
Yeah I was being stupid, I can say goodbye to my A*
12. (Original post by PhysicsIP2016)
I said that d=2r so doubling 2r makes 4r? No?!
Im a retard I hate myself I actually put 4 as well then crossed it out because of my stupid reasoning bye bye Cambridge
Yes but radius goes from r to 2r as d 2r to 4r.
13. (Original post by physicsmaths)
Yes but radius goes from r to 2r as d 2r to 4r.
Yeah, hindsight is a really wonderful thing...
14. (Original post by PhysicsIP2016)
Yeah I was being stupid, I can say goodbye to my A*
Dw. Check me out, i got the right answer for SHM then i write down the wrong answer cause i can't read lol.
15. (Original post by PhysicsIP2016)
Yeah I was being stupid, I can say goodbye to my A*
Its just 1 mark
16. (Original post by Pudge666)
Its just 1 mark
Honestly I do this a lot I know it's one mark 😂 It's just worrying because I never know how many other questions I have 'reasoned' myself out of the correct answer..
17. (Original post by physicsmaths)
Dw. Check me out, i got the right answer for SHM then i write down the wrong answer cause i can't read lol.
Ah lol, at least that one stumped a lot of people 😂
18. (Original post by PhysicsIP2016)
Ah lol, at least that one stumped a lot of people 😂
Im a ****ing retard lol. So angry if i miss A* cause of atuff like that. I think Unit 4 was 70+ and Unit 5 65 ish hopefully that comes to 220/240 UMS since i only got 50/60 ums in CA. So hopefully I can scrape by.

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19. How much marks will I get for the SHM question: I did w=2pi/4.5=4pi/9. I then used x=Asin(wt), where x =0.6, and A=2.3. Then rearranged and found two values for sin-1(0.6/2.3). Divided each value by my angular velocity, which gave me 0.189 seconds, and 2.061 seconds. Found the difference to be like 1.88 seconds to 3s.f?

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20. (Original post by physicsmaths)
Im a ****ing retard lol. So angry if i miss A* cause of atuff like that. I think Unit 4 was 70+ and Unit 5 65 ish hopefully that comes to 220/240 UMS since i only got 50/60 ums in CA. So hopefully I can scrape by.

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That sounds reasonable, I imagine you'll be able to get the A* with those marks!
I reckon I might have scraped a decent mark in unit 5 and my coursework should boost the grade anyway, but I'll still worry that I haven't done enough to meet my grade requirements for Uni 😁

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