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Unit 5 Physics Edexcel A2 and Edexcel IAL

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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
Original post by Pudge666
Yes , explain condition required for fusion reaction (something like that ) 2 marks


Ah well..
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
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.
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.


Do you have your multi choice answers saved?
Original post by Middriver
Do you have your multi choice answers saved?


No, but I remember some of them.
The mean square speed is doubled, and the energy ratio is 9 I think.
Original post by Middriver
Do you have your multi choice answers saved?


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
(edited 7 years ago)
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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Original post by physicsmaths
16?
Hm I think it was 4 no?
Doubling diameter means double r no?


Posted from TSR Mobile


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
(edited 7 years ago)
Original post by physicsmaths
16?
Hm I think it was 4 no?
Doubling diameter means double r no?


Posted from TSR Mobile


I got 4 as well
Original post by Pudge666
I got 4 as well


Yeah I was being stupid, I can say goodbye to my A*
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.
Original post by physicsmaths
Yes but radius goes from r to 2r as d 2r to 4r.


Yeah, hindsight is a really wonderful thing...
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.
Original post by PhysicsIP2016
Yeah I was being stupid, I can say goodbye to my A*


Its just 1 mark
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..
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 😂
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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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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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.


Posted from TSR Mobile


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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