The Student Room Group

AQA A level Physics Paper 2 Unofficial Markscheme June 8

Scroll to see replies

Original post by Claudo Z
for first one i put increase the amount of water (which is pretty much the same as yours)

for the second one i put narrower the tube on the bottom


you're right to increase the tube. i read the question too quickly as usual so put down a dumb a$$ answer again.
Original post by BTAnonymous
Oh god i messed that q up then.

How did you do the last part of 3? I worked out the energy stored at 3mC, then used this to find the p.d at 3mC which i then used to find the current through R (should be the same as the capacitor right....) and then finally t = Q/I?

don't remember my answer which is why i'm asking :colondollar:


I used CV=Q to work out V(think I got 8.11V) then used V=V0(1-e) to work out t. My value of t is about 1.8s from memory.
Honestly in my opinion the questions weren't too difficult compared to last year. Remember that cyclotron question? :s-smilie: They also had no 6 marker like that nucleur disposal question last year. Therefore I see the questions being slightly easier. The multiple choice on the other hand yeesh it's like they upped the difficult multiple x that I had to guess several :angry:
Original post by BTAnonymous
you're right to increase the tube. i read the question too quickly as usual so put down a dumb a$$ answer again.


Sht I said use a longer tube but forgot to use more water:frown:
Original post by milkteaisgood
I used CV=Q to work out V(think I got 8.11V) then used V=V0(1-e) to work out t. My value of t is about 1.8s from memory.


Yes, i remember 8.111V. 1.8 seconds rings a bell.
Original post by Ahlam_Abdi
I wrote the same thing for your first two points but for the last one I said to make the tube narrower. Not sure though.


yeah you're right.
Original post by BTAnonymous
exponential equations can never equal 0 though. Try ln(0). It was definitely 2cm.


Buy it's a tube tho. Surely the water would run out not long after?
Reply 47
Original post by milkteaisgood
I'm quite sure it was A (0.342)


That would have been 65/20 however the gradient of the line was from 65 to 100. So I put C.
Reply 48
Original post by Claudo Z
I got exactly the same:wink:


Ayyy thank god someone agrees:smile: How'd you find it overall?
Original post by Radioactivedecay
Buy it's a tube tho. Surely the water would run out not long after?


True...
Reply 50
Original post by BTAnonymous
exponential equations can never equal 0 though. Try ln(0). It was definitely 2cm.


In theory they can't but in reality all the water will have left the tube after 57s.
Original post by AV_Luke
In theory they can't but in reality all the water will have left the tube after 57s.


How did you confirm that though?
Original post by Radioactivedecay
Buy it's a tube tho. Surely the water would run out not long after?


Lol this is just a model, water evaporates naturally so the last few molecules probably disappear by evaporation.
Reply 53
grade boundaries????????
what did people get for the charge that is 66mm away from p
What did everyone else get for the weird equipotential line diagram in multiple choice? I choose .
About the same difficulty as last year i thought
Reply 57
Original post by sdfsdd
what did people get for the charge that is 66mm away from p


I got like 55uC
Original post by Ahlam_Abdi
I got like 55uC


damn i think igot like 6.1
Reply 59
Original post by milkteaisgood
What did everyone else get for the weird equipotential line diagram in multiple choice? I choose .


Those were equipotential lines and field direction must be perpindicular to them. It shouldve been to the left.

Quick Reply

Latest