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AQA Physics GCSE P2 & P3 [OFFICIAL THREAD]

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Reply 1820

Decklan

Original post by MrTechGamer

What did everyone one put for the resistance question in p2 ? like the ones with the thickness of the wire.

Wire C because the line was the shallowest so highest resistance.

Reply 1821

Momo88

Omg. I think I missed a page out. I don't remember drawing a ray diagram. Can anyone remember the questions on that page?

Reply 1822

tue

http://www.thestudentroom.co.uk/showthread.php?p=56052493&highlight= - Physics 2 unofficial markscheme

Reply 1823

Palette

For conservation of momentum can you say all the momentum in the first object is transferred to the second object?

Reply 1824

Matt1278

Original post by Bubblebex1

Charge is measured in coulombs
Resistance is measured in ohms

Posted from TSR Mobile

yes correct

Reply 1825

Tob987

Original post by S21.99

I said 3.6J (I think) for the first two as there was no working space for the gravitational energy and so I thought it must be conserved. I said 7.2 for the height (double whatever I put first...)

Yep i think that was right. And 3.6j for both kinetic and gpe

Reply 1826

Blueturquoise

Original post by Momo88

Omg. I think I missed a page out. I don't remember drawing a ray diagram. Can anyone remember the questions on that page?

That was for P3 dont worry!!
What did you get for the momentum question??

Reply 1827

fabsafxo

I found the P2 exam the hardest one out of all the additional ones...I really struggled. I guess it was because I wasn't as prepared as I should have been like the Biology and Chemistry...I think the P2 has pulled my overall grade down really low now...

I didn't answer any of the plum pudding ones...:O - I ran outta time which sucked..

All the maths ones I got completely wrong because I had no idea which one to use and completely failed....all the answers on here are making me think ive done everything wrong.

I revised half life and then went blank in the exam...
The momentum questions threw me off, and even the stuff about the parachutist with all the graphs at the end..I JUST DONT EVEN KNOW.

The only question I am confident about is the 6 marker..i think I haven't even passed :frown:

Reply 1828

fabsafxo

Is there an unofficial markscheme?

Reply 1829

kaypd

Original post by fabsafxo

Is there an unofficial markscheme?

http://www.thestudentroom.co.uk/showthread.php?p=56052493&highlight=

Reply 1830

fabsafxo

Original post by kaypd

http://www.thestudentroom.co.uk/showthread.php?p=56052493&highlight=

Thankyou!<3

Reply 1831

hannah4475

Original post by Decklan

Kinetic energy

E = m * v^2 * 0.5
E = 50 * 12^2 * 0.5
E = 3600J

KE equal to maximum gpe = 3600J

Height = 7200m

I may be wrong but I think the answer was 3.6J

Could it be that you used grams instead of kg for the mass? I don't think the mass was 50kg as it was only a small toy rocket!!

7200m seems a bit high for an air powered rocket as well :smile: