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AQA Physics GCSE P2 & P3 [OFFICIAL THREAD]

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Reply 1100

hannah4475

Original post by Pra99

It was 22.5. 45 divided by 2

Ahh right ok :frown:

Why was that?!

Reply 1101

neil20143

Original post by sofiaslifeisover

What was the reason for ditching the plumb pudding model for the 2 mark?
I put because their results were not supported by the plumb pudding model so they had to modify the model to support the results they obtained.

I said that some of them past straight through the foil which suggested the atoms were almost empty space which contradicts the theory and that more than expected number of particles deflected at more than 4 degrees so this suggested that the nucleus of an atom had a large mass and a very large positive charge but I don't know what to they were looking for.

Reply 1102

MeiMei15401

Original post by hannah4475

I got 17 for speed - just did 170/10 ?! Was that completely wrong?

Not sure - I got 22 but only after spending 10 minutes calculating different speeds. The problem was it said maximum speed so you actually had to find it.... In the end I just gave up and worked out the speed at the straight bit of the graph, it kinda looked like it had the steepest gradient so :tongue:

Reply 1103

Rachel4x

What did people get on the P3 question about what happens to the wire in the low frequency alternating current and why?

Reply 1104

11Jason11

Original post by Olmeister

Have you done a P2 mark scheme yet?

I can do the P2 unofficial mark scheme on Friday

Reply 1105

nocheloche

Original post by maxjackson5

I said velocity increased because the upthrust force was greater than the force of weight and air resistance.

I said velocity increases as the engine force would have to increase in order to balance the resistive forces. (but honestly idk tbh :tongue:

)

Reply 1106

Positivedani

Original post by 11Jason11

Yes, cause as you can clearly see what happened in water. Also the space to do refraction was very small- should've given you a hint it wasn't that. I put partially reflected, whilst some people put it went along the boundary.

K that sounds a bit rude.

Reply 1107

Conor1998

Original post by EricAteYou

18 number of coils...

Oh yeah I got that. Meant the one before that though sorry mate

Reply 1108

MatthewAteYou

Original post by Rachel4x

What did people get on the P3 question about what happens to the wire in the low frequency alternating current and why?

It would vibrate ( I think ), due to the magnetic poles and the motor effect.

Reply 1109

MeiMei15401

Original post by Rachel4x

What did people get on the P3 question about what happens to the wire in the low frequency alternating current and why?

I said it moves up and down because the magnetic field keeps changing direction.

Reply 1110

iMacJack

For the 2 marker on ruthersford and marsden I put:

If the 'plum pudding' had a positive charge, then all the alpha particles would have of repels due to the fact like charges repel
what would I get

Reply 1111

Blueyy__

Original post by Rachel4x

What did people get on the P3 question about what happens to the wire in the low frequency alternating current and why?

i put it will move up and down
as the current is changing direction

Reply 1112

neil20143

Original post by Rachel4x

What did people get on the P3 question about what happens to the wire in the low frequency alternating current and why?

I got it going up and down which I think is wrong :frown:

Reply 1113

srw98

Original post by JezDayy

I think the people talking about the labelling eye question may have done PH3HP paper, while people who DID NOT get the question did FAS3HP paper (who sat core last year).
I don't remember any labelling questions and I did FAS3HP.

ahh thanks for posting this, was stressing slightly that I'd missed one out!!

Reply 1114

MatthewAteYou

Original post by MeiMei15401

I said it moves up and down because the magnetic field keeps changing direction.

Would you think vibrating would have been OK to say?

Reply 1115

maddie_01

On one of the questions in P2 did we have to use the final equation on the equation sheet? The one in bold?

Reply 1116

Smingle

Original post by Rachel4x

What did people get on the P3 question about what happens to the wire in the low frequency alternating current and why?

I think it move up and down as the current moves back and forth. It is reversing lemmings left hand rule, i think?

Reply 1117

LydiaSwift

What is this question can u descibe it coz I don't remember? :colondollar:

Original post by maxjackson5

So many people put 17, and yeah looks like it's wrong:L

Reply 1118

MatthewAteYou

Original post by Smingle

I think it move up and down as the current moves back and forth. It is reversing lemmings left hand rule, i think?

I assumed motor effect?

Reply 1119

Snuffleq

Original post by TheTruthTeller

guys how did you find the p2 paper? I found it was ok , but harder than last years in which an A* was 44/60. Grade boundary predictions for p2 and overall sentiment guys?