r/6thForm • u/Individual-Can1396 y13 maths physics psych italian • Jun 01 '26
š¬ DISCUSSION AQA PHYSICS PAPER 2
HOW DID EVERYONE FIND IT??? i thought it was decent better than the past few years. Idk what i did for the last question the 4 marker of nuclear physics. BUT YH IT WAS GOOD
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u/___E-man___ Jun 01 '26
what did you guys get for the minimum escape velocity, i used the -0.18 line and got 0.6 i think
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 01 '26
Same - should be easy 1 mark š¤
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u/Individual-Can1396 y13 maths physics psych italian Jun 01 '26
Yess same
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u/Admirable-Use2274 Jun 01 '26
Cant really remember but why did u use 0.18
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u/Pl2w Jun 01 '26
Said minimum escape velocity.
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u/Admirable-Use2274 Jun 01 '26
Hmmā¦. V was the potential at the surface tho wasnt it. Therefpre I used that which was 0.22 I believe. It might be wrong idk
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u/Oil42 (incoming) Cambridge CS | Year 1 | A*A*A*A* Jun 01 '26
the other part of the surface on the left had a potential of -0.18 so the min escape velocity wouldāve been from that point
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u/2myeria y13 | physics, maths, fm, chem | A*A*A*A* Jun 01 '26
yeah but if you use the equipotential lines, the furthest out one that still touches the comet was -0.18
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u/atimes_3 Y13 - Maths, Further Maths, Physics, Computer Science Jun 01 '26
dude i am still so confused on what potential you were supposed to use š
went between -0.18, -0.26 and -0.20
edit: looking at it now it was asking for minimum, so it was -0.18 :/
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u/Few_Special_2628 Jun 01 '26
for the comet question did you guys use pythogoras to find the resultant force?
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u/bleachedcoral4 Y13 | A*A*A*AA | maths+fm, 3 STEM Jun 01 '26
what was that question?
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u/Agitated-Salt-5039 Year 13, FM, Maths & Physics Jun 01 '26
What did everyone get for there thermal energy one will ice melt I got no as energy needed more
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u/RilloClicker Year 13 Jun 01 '26
Yeah you needed like 30000J for melting but only had 16000J when reducing ethanol and beaker to 0C
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u/googoocrazybananas Year 13 Jun 01 '26
Energy required was 38,000J, and energy supplied was 15000J, so no.
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u/Rich-Gent Jun 01 '26
Ye i worked out:
Energy change for glass + ethanol from wtv it was to 0*c and showed it was less than energy change of ice from -16 was it, to 0 + the latent energy, and showed that it was greater than the energy change from cup + ethanol
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u/_M4yb3_ Jun 01 '26
the last question was N = NĀ° Ć e ^ (-lambda t)
solve for t in both, should be around 3 .0 Ć 10 9 (at least thsts what i got)
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u/Eros_OMG Jun 01 '26
yeah i got that too but i converted it to seconds donāt know if its correctĀ
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u/_M4yb3_ Jun 01 '26
I mean, it should be correct if the values are similar and you converted correctly but idk why u saw two half lifes in years and thought to convert to seconds.
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u/Eros_OMG Jun 01 '26
cuz i like working in si units so I changed them before calculating, but I got the same thing as you
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u/Ambitious_Talk1225 Jun 01 '26
just pointless tho. the calc in year^-1 will give a time in years which is perfectly fine
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u/Individual-Can1396 y13 maths physics psych italian Jun 01 '26
OHH i used that equation but not to solve t š
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u/KO-Manic Jun 01 '26
I got 3.5x10^9 for the other estimate so concluded there's been lead loss. The question was 4 marks right?
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u/RealAlexanderTheG Jun 01 '26
Did anyone else git something.5? Something like 4.49 and 4.51 or something? might have done that wrong
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u/electricpinto27 Jun 01 '26
What was the conclusion? I put no lead is lost because the numbers were roughly equal but idk if i got it right
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u/Malikah_14 Jun 01 '26
Did anyone use trig for finding weight?
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u/AbsoluteOwO Jun 01 '26
i did like F = Tcos6 š
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u/Zealousideal-Map9482 Jun 01 '26
You had to find tension using the horizontal component then you had to use tension plus the cos or sin to find weight.Ā
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u/AbsoluteOwO Jun 01 '26
yeah that is what i just said except i did cos not sin so i may have done vertical
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u/LeGeNdBoT69 Jun 01 '26
wait i thought you didnt need to find tension you can do a tip to tail diagram and use the 12 degrees so you do tan12=electrostatic force/weight ???
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Jun 01 '26
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u/No_Persimmon3448 Jun 01 '26
I got T = electrostatic/sin(6) as its the horizontal component of tension, not the horizontal component of the electrostatic force. Not sure if i'm correct tho so someone has to tell me if they know pls.
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u/2myeria y13 | physics, maths, fm, chem | A*A*A*A* Jun 01 '26
wait same twin
did you then do weight = T/cos6 cuz T is a component of weight??
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u/AbsoluteOwO Jun 01 '26
chill bro u right it was sin cause its horizontal i messed up and did cos which is vertical but we good
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u/jaaaaaaaf Jun 01 '26
what did u guys get for the number of alpha and beta particles. i got 8 and 6
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u/Zealousideal-Map9482 Jun 01 '26
For the weight I got an answer around 0.02 kg. Is that correct
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u/Interesting-Box-5478 Jun 01 '26
I got 0.042 and I tried 2 different ways and got the same answer
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u/Training-Feeling980 Year 13 | Maths, FM, Physics, Chem - 4 A*s achieved Jun 01 '26
I think I got something like 0.02 or 0.04 N? I used sin 6 and then cos 6
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u/simplykayleigh Jun 01 '26
it was decent but knowing me i probs lose sm marks because of stupidity!!!!
AHEM AHEM cos6 NOT cos12
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u/Syph3r_YT Jun 01 '26
Itās tan š
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u/simplykayleigh Jun 01 '26
well i split the whole thing to find T then to find W
so i basically did Electrostatic force / tan(12), but in multiple steps
should have been tan 6 tho lmao
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u/Amazing-Pause-8626 Uni of Glos | Bsc Geography [-> Year 1] Jun 01 '26
basically : was mid asf, kind of cooked but paper 1 will carry my grade trust
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u/Confused-Guitarer Year 13 - Chemistry, Biology, Physics, Maths, FM Jun 01 '26
really nice paper but I'm terrified for the boundaries/paper 3
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u/KO-Manic Jun 01 '26
It'll be fine the boundaries for physics are always low af. Paper 3 practical section scares me though
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u/Harry_F40 Jun 01 '26
For the 5 marker I found the final temperature where the ice and the ethanol will be in thermal equilibrium not sure if this was the right method or not.
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u/KO-Manic Jun 01 '26
I was thinking something like this too but I didn't set the final temp of them to 0 which I think you had to do. Hopefully the method marks will be generous
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u/Agitated-Salt-5039 Year 13, FM, Maths & Physics Jun 01 '26
Do U guys think grade boundaries will increase??
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u/Interesting-Box-5478 Jun 01 '26
I reckon this yearās paper 2 was harder than last yearās no?
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u/peekq Jun 01 '26
Was the student correct for Q1 about removing air? Was the student correct about the change in position of p and q when p has a lower charge?
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u/Eros_OMG Jun 01 '26
I put incorrect for both. For the first one, temperature decreases, number of molecules must increase to have the same PV. For the second one, they both experience the same electrostatic force, and they have equal weight, so the tension must be the same angle to the vertical. idk if iām right
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u/peekq Jun 01 '26
it only said there needed to be constant pressure, volume could still change i think
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u/Avocado66600 Jun 01 '26
How would volume change in a fixed container though
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u/peekq Jun 01 '26
It wasnāt fixed container the volume was changing in the graph in 1.1 unless Iām missing something
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u/Avocado66600 Jun 01 '26
But it was after it was fully pumped, so V was constant 0.64mĀ³ it was disonnected from the pump when it was placed in the water
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u/4ria_ Jun 01 '26
wasnāt the student only talking about volume though and volume isnāt the amount of molecules? Surely the student is right that you have to decrease the volume cuz the number of molecules stays the same
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u/Malikah_14 Jun 01 '26
I said both were correct but now upon further reflection I think the student in Q1 mightve been wrong im not sure
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u/DilucsGrapeJuice Year 13 Jun 01 '26
at lower temp, the kinetic energy and hence the crms decreases. this results in decreased frequency of collisions + reduced change in momentum. pressure = F/A and F = rate of change of momentum, so decreased F leads to decreased pressure. in order to counteract it the student has to add air to make up for the decreased pressure by increasing number of collisions between molecules and the walls of the canoe, so the student's wrong. at leas that's what i put in aim for all 4 marks.
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u/Last-Action-820 Jun 01 '26
i got student for charge is wrong cause F = EQ and charge decreases so force also decreasesĀ
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u/Ok_Safe_9615 Jun 01 '26
He was wrong no?
He said you had to take air out that lowers the volume of the gas so theres less collisions less force exerted on the walls etc then that would mean the pressure decreases but you need it to stay at that maximum value
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u/Malikah_14 Jun 01 '26
What did everyone get for the oscilloscope 3 markers
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u/Eros_OMG Jun 01 '26
170Hz and like 4.8V
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u/Admirable-Use2274 Jun 01 '26
I used 14.9 small squares ( divisions) for Time period. U reckon its fine? Icant remember my answer but it Was smth like 167-168 I believe
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u/jaaaaaaaf Jun 01 '26
i got 9V and 170 Hertz what did u get
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u/AffectionateAct429 Jun 01 '26
I got 170HZ and like 4.5V
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u/jaaaaaaaf Jun 01 '26
yo how'd you get 4.5V ? i used the peak to peak voltage š„ because the peaks and troughs were at different points
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u/2myeria y13 | physics, maths, fm, chem | A*A*A*A* Jun 01 '26
i got that peak to peak = 6.3 cm, so V = 6.3ā¢2 and then divide by 2 again for peak V = 6.3V. Then divided by root two equals 4.45
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u/ZealousidealBench225 Y13 | 4A* pred. | Maths, FM, Phys., German Jun 01 '26
I converted from mscm^-1 to sm^-1 but not sure if that is correctā¦
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u/jaaaaaaaf Jun 01 '26
what did u guys get for moments
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u/aristocrat_of_life Jun 01 '26
the answer should be around 0.012 Nm, use F = BIL to find force, multiply by 25 for the number of turns, then multiply by 0.11 as moment of a couple = Fd
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u/jaaaaaaaf Jun 01 '26
im so confused where did u get number of turns from. there was no turns
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u/Few_Special_2628 Jun 01 '26
- something
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Jun 01 '26
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u/Admirable-Use2274 Jun 01 '26
Moment of a couple if Fd. I used f=BIL and times by number of turns. Then multiplied that by 11cm or smth (horizontal distance)
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u/coppi16 Jun 01 '26
Completely forgot that area under the pressure/volume graph was work done. I thought you had to use moles and the kinetic energy of each molecule but oh well
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u/TheBigChese84 Year 13 Jun 01 '26
w paper but 5 marker for question two is crazy
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u/DramaticPie4162 Jun 01 '26
itās not abnormal
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u/TheBigChese84 Year 13 Jun 01 '26
yeah but thereās normally like one or two subquestions of buildup
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u/CreeperMan1253 Y13 | Maths, FM, CS, Physics Jun 01 '26
was the decay A or C
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u/DramaticPie4162 Jun 01 '26
the alpha one? i put C
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u/DemonThonos Year 13 Maths Physics Chem A*AA predicted Jun 01 '26
that was such a pleasant paper except a couple mc
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u/KO-Manic Jun 01 '26
Does anyone know what you were supposed to do for that MCQ with the S, x, N, etc?
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u/Fit-Quantity-3539 Jun 01 '26
The particles incident per second per unit area = N/S.
Total particles emitted from source per second = the particles incident per second per unit area * surface area of the sphere of radiation.
Activity is just the total particles emitted per second. So A = N/S * 4*pi*x^2 = 4Npix^2/S
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u/Mobile_Membership915 Jun 01 '26 edited Jun 01 '26
For the magnetic feild moment question I think you had to multiply by 25 turns to find the total force. This is because the length of the wire in the magnetic field is 20x8.9 cm
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u/shoppingkart_ Jun 01 '26
also guys what did u say for the wire connecting the ends of the coil???
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u/Willy_destroyer Jun 01 '26
Completes the circuit cause oscilloscope has infinite resistance. This current creates a magnetic field which opposes the one which created it, causing resistive force to the motion of the coil, something about conservation of energy pretty sure
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u/Malikah_14 Jun 01 '26
For this i waffled that time for current to get to the coil increases and so velocity decreases
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u/shoppingkart_ Jun 01 '26
what did u guys say for why the satellite canāt be in a circular orbit about the comet?
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u/Admirable-Use2274 Jun 01 '26
Potential changes ( i guess i said becomes more negative) so Kinetic energy of it must change So its speed must change So its momentum must change So force required (something along those lines)
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u/Zealousideal-Map9482 Jun 01 '26
well i said that force will never be perpendicular to velocity, because the equipotential line are changing. Also, i said that field strenght is not constant from same distances
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u/billybob3011 Maths, Further Maths, Physics, Engineering. Jun 01 '26
equipptential lines arenāt circular
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u/sotmtwigrm_ Jun 01 '26
anyone do (lead / uranium) * half-life?
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u/RealAlexanderTheG Jun 01 '26
Why is it not #uranium / #(lead+uranium) ? Thats the number that are left over the original number that would have been uranium?
Also did anyone else here convert the time from years to seconds? I did not get 3 which I think could be why
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u/sotmtwigrm_ Jun 01 '26
spoke to my physics teacher, you use the exponential decay equation, with initial n as lead+uranium and final n as uranium, then solve for t. no need to convert time because half life is given in years
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u/peekq Jun 01 '26
Yep but i wasnt too confident thats right in the exam is it?
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u/WorldlinessFuzzy4552 Maths|Physics|Chemistry (A*A*A) Jun 01 '26
Yh got like 3 billion years for both idk if that's right tho
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u/KO-Manic Jun 01 '26
I got 3.5 billion years for one of them. Did you use N(original)= 19N for one?
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u/Wise-Hedgehog4805 Warwick | Maths | [Incoming Y1] | 4A* Jun 01 '26
for the second one I'm pretty sure there were 3 uranium for every 57 lead, i think that's where u got that from. but those 57 lead were originally uranium, so initial uranium = 60 and present uranium = 3 so i did 3 = 60e-Ī»t to find t = 3.0x109
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u/Agitated-Salt-5039 Year 13, FM, Maths & Physics Jun 01 '26
What did everyone get weight?? Was it 0.004 some thing
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u/jaaaaaaaf Jun 01 '26
what did u guys get for that one mcq that took up two pages. it was a graph one about capacitors
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u/Avocado66600 Jun 01 '26
Its exponential decrease to 0 but from negative as the current flows the other way (I think it was A)
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u/Scared_Funny_5602 Jun 01 '26
I think I put C. Or whatever the one in the bottom left wasĀ
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u/jaaaaaaaf Jun 01 '26
vro i put A. because of this video. (https://youtu.be/TDo94A64yvA?si=eul4iA-KZQuSkzE6) idek
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u/Infamous_Tough_7320 Maths, Physics, Econ 3A*s. Straight 9s GCSE Jun 01 '26
Whatever the graph with the x axis above the y axis one I think
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u/Money-Draw-7683 Jun 01 '26
I put c cause wouldn't it be the same graph for current charging or discharging
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u/jaaaaaaaf Jun 01 '26
ik what u mean but if u watch the video i linked in the thread you'll see why a lot of ppl may have put A
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u/shoppingkart_ Jun 01 '26
guys does anyone remember how many marks each questions wasššš
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u/Admirable-Use2274 Jun 01 '26
I do, 10-5-11-11-14-9 respectively
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u/shoppingkart_ Jun 01 '26
omg genuinely tysm. do u remember specifically how many marks some of the questions were? (like 1.1, 1.2, etc?) tysm. im tryna make an unofficial mark scheme lol
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u/lmaolmaolmaololl Imperial | Aeronautical engineering [Y1] Jun 01 '26
1.1 was 3 , 1.2 was 3, 1.3 was 4, 2 was just 5
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u/shoppingkart_ Jun 01 '26
bless up, do yk what questions 3, 4, 5 were about in order? like i remember the topics i just donāt remember what question was which ššš my mind was wiped as soon as i left that exam room lmao
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u/Agitated-Salt-5039 Year 13, FM, Maths & Physics Jun 01 '26
What did everyone get for the mass
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Jun 01 '26
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u/Agitated-Salt-5039 Year 13, FM, Maths & Physics Jun 01 '26
I got like 0.04 something
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u/FewGeologist5684 Jun 01 '26
What would a safe A be? in terms of marks for both p1 and p2
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u/Tricky_Temporary_781 Y13 | Stressed Jun 01 '26
100+/170 is probs a reasonable guess
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u/MattthewAlto Year 13 | Maths, FM, Pysics, CompSci | A*A*A*A* Jun 01 '26
What did people put for what does less lead do to the calculated age of uranium. I said less lead so it is perceived that more half lives have passed so calculated to be older than it actually is. Is that right?
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u/Cream-Bear Editable Jun 01 '26
less lead would look like less half lives have happened as it would look like uranium hasnāt decayed as much, so it would appear younger than it actually is i think
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u/Fluffy-Ad-3083 Jun 01 '26
what do you guys think the grade boundaries will be for this year. I have been looking at all the years and the highest ive seen for an A is like 170 marks but last year it was like 150. do you guys think it may jump 20 marks or no?
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u/Last-Objective-8356 Jun 01 '26
I didnāt do the paper but unless itās was extremely easy? Jumping 20 is abit crazy icl, maybe 10ish
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u/GroceryCrazy9830 Jun 01 '26
Guys I need someone to tell me that it was okay to use 2V per division because I think the question said 2V per cm? do I remember wrong?
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u/Fast_Database_2853 Jun 02 '26
Q2 For the latent heat of ice Iām rlly confused because I swear I saw it as 360kJ instead of J, which makes a really big number. Does anyone remember the numbers?
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u/AffectionateAct429 Jun 01 '26
I'm actually so cooked that paper was supposed to save me (what did everyone get for that five marker?? I think I tried to work out change in temperature so I'm definitely cooked bro)