OCR GCSE Physics Paper 4 (Higher tier) J249/04 - 23 Jun 2022 [Exam Chat]

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Mythical Pingu
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#1
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OCR GCSE Physics Paper 4 (Higher tier) J249/04 - 23 Jun 2022 [Exam Chat]

Here is the exam discussion for this exam. Talk anything from how to revise for it, specific questions or time management :ahee:

Date/Time: Wednesday 23rd June AM
Length: 1h45


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:goodluck: with revision and exams :work:
Last edited by Mythical Pingu; 2 months ago
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Mythical Pingu
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How was the exam?
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JKel05
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#3
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very nice
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Reuben C
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not too bad, i found it easier than paper 1
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prettytree
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it wasn't bad but I know I missed quite a few marks lol. there were so many questions on improving the experiment and the last page with the graph questions I dint really get
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RaggedSlugger22
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(Original post by prettytree)
it wasn't bad but I know I missed quite a few marks lol. there were so many questions on improving the experiment and the last page with the graph questions I dint really get
same!!! I was waffling way too hard on those improving the experiment and accuracy questions
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Reuben C
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for the 6 marker i'm not sure i read the question correctly. i talked about it taking longer for a change in momentum and therefore less force but it was talked about a larger distance and something to do with the rear wheels
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Reuben C
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(Original post by prettytree)
it wasn't bad but I know I missed quite a few marks lol. there were so many questions on improving the experiment and the last page with the graph questions I dint really get
yeahh i hate practical related questions
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samanthat
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#9
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the paper was actually nice for once
better than paper 1
what did you guys get for the 5 marker maths question to 2 significant figures
Last edited by samanthat; 2 days ago
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Reuben C
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(Original post by samanthat)
the paper was actually nice for once
better than paper 2
what did you guys get for the 5 marker maths question to 2 significant figures
4.3 MJ i think
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RaggedSlugger22
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(Original post by samanthat)
the paper was actually nice for once
better than paper 2
what did you guys get for the 5 marker maths question to 2 significant figures
4.3 MJ
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samanthat
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(Original post by RaggedSlugger22)
4.3 MJ
yep i also got that but my anwsers seemed too good to be true tbh as they were very simple with 4- 5 marks
oh well finally got out last exams over with
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Reuben C
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(Original post by samanthat)
yep i also got that but my anwsers seemed too good to be true tbh as they were very simple with 4- 5 marks
oh well finally got out last exams over with
the marks would probably come from finding the equation, rearranging, identifying point on graph, calculating, and giving to 2 s.f.
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RaggedSlugger22
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(Original post by samanthat)
yep i also got that but my anwsers seemed too good to be true tbh as they were very simple with 4- 5 marks
oh well finally got out last exams over with
yeah
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SnowyPanda
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#15
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for the final part of the last question. did you have to work out the gradient for each planet or something. I did something like i dont remember the numbers but I did 1.28/numberx10 power of 11 and 2.something/numberx10 power of 11, and say both of the gradients arent equal so shes correcy
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Reuben C
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(Original post by SnowyPanda)
for the final part of the last question. did you have to work out the gradient for each planet or something. I did something like i dont remember the numbers but I did 1.28/numberx10 power of 11 and 2.something/numberx10 power of 11, and say both of the gradients arent equal so shes correcy
i found out the scale factor of the radius and multipled one of the speeds by the scale factor and it didn't equal the other speed so it couldn't be proportional
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SnowyPanda
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(Original post by Reuben C)
i found out the scale factor of the radius and multipled one of the speeds by the scale factor and it didn't equal the other speed so it couldn't be proportional
I found out that the gradients for both planets werent the same, is that right?
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Reuben C
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(Original post by SnowyPanda)
I found out that the gradients for both planets werent the same, is that right?
i don't completely understand your method but it sounds logical. was the question about the speed of orbit being proportional to the radius of the orbit? i'm worried i misread it now lol
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SnowyPanda
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(Original post by Reuben C)
i don't completely understand your method but it sounds logical. was the question about the speed of orbit being proportional to the radius of the orbit? i'm worried i misread it now lol
yes
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SnowyPanda
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#20
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I divided them two for both planets and they didnt equal the same thing.
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