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AQA Physics PHYA4 - 20th June 2016 [Exam Discussion Thread]

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Was anyone able to do question 3 on the multiple choice? And the formula question on the section B momentum?
Original post by jarjarmonkey
Is it ok if you only filled the pink sheet for the multiple choice? And not the actual booklet


Thats what you're supposed to fill in!
Original post by Beautywithabrain
Thats what you're supposed to fill in!

So Will they not mark it from the pink sheet if I haven't circled the ones in the booklet
Original post by jarjarmonkey
So Will they not mark it from the pink sheet if I haven't circled the ones in the booklet

Yes they mark the pink sheet
Original post by tas1998
if people want to do a model answers/unofficial markscheme, i'm going to try and store my answers to the multiple choice in my calculator, ie a=1, b=2 etc., if others do the same we can build up a good idea of whats right or wrong, instead of trying to remember a 25 letter string


cbaddddbbbccccababacaadbd
Really nice paper. Only struggled with the 4 mark momentum derivation question

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Original post by Beautywithabrain
Thats what you're supposed to fill in!


Also if I scribbled out an option in the pink sheet and picked another one will they mark it or give 0
what did people get for the momentum of the alpha particle?
Original post by jarjarmonkey
Also if I scribbled out an option in the pink sheet and picked another one will they mark it or give 0


They should still mark it. As long as it's clear which one you chose in the end
Original post by duncant
what did people get for the momentum of the alpha particle?


I think 1.15 x 10^-19
for finding the time constant in question 1 did people get 201 seconds
Paper was pretty standard, six marker was nice comparmed with past papers,
Question one calculations i got
8.3mF
3.7×10^-5 j
36s
77000ohms

Then 6.06×10^6 for venus radius??

216 nuleons
V=mv/N
Limitation small angle approximation?
Original post by XxswagmasterxX
I think 1.15 x 10^-19


think I got that, I remember writing x10^-19 so probably right
Original post by girlruinedme
The Multiple choice was tricky. Other than that it was a standard paper


Agreed
image.jpgI just did this and got it right but I did it wrong in the exam....I got (N+m)k for that step not sure how many marks I will get 😥
Original post by Rid123
Paper was pretty standard, six marker was nice comparmed with past papers,
Question one calculations i got
8.3mF
3.7×10^-5 j
36s
77000ohms

Then 6.06×10^6 for venus radius??

216 nuleons
V=mv/N
Limitation small angle approximation?

got this but I got RC=28s? 45/-ln(0.2)
Thought that was an alright paper - damn I couldnt prove the mometum question lol. I loved the 6 marker tho
I got 200s for time constant?

That was ok - some easy parts and some harder parts. I suspect grade boundaries will be normalish (62/75ish for 120 UMS).
Original post by aelahi23
for finding the time constant in question 1 did people get 201 seconds


No it was not that. You had to use ln0.2 not ln0.8
Original post by XxswagmasterxX
I think 1.15 x 10^-19

yessssssssssss

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