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# AQA Physics GCSE P2 & P3 [OFFICIAL THREAD] watch

1. (Original post by Amywillrevise)
Did anyone get 12 for the half life question? I see people saying they got 9, some saying 12. Which is right?????
12 is right. 80-10 is 3 half lives. 36/3 = 12.
2. (Original post by Amywillrevise)
Did anyone get 12 for the half life question? I see people saying they got 9, some saying 12. Which is right?????
I got 9!

The roots of education are bitter, however the fruit is sweet.
3. Oh no I just worked it out and 9 is right!!! Damn I was wrong :'(
4. (Original post by rohanl98)
Was the first question... It was directly proportional and then I chose C for the next...?
i got that too!
5. For the seatbelt question i said the large amount of force transferred from kinetic energy in such a short time can be fatal for the people in the car so seat belts absorb energy as elastic potential energy and increase the impact time
6. (Original post by Gobygaga)
I got 22.5
Well I'm sure Ive got about 7/60 in that exam

The roots of education are bitter, however the fruit is sweet.
7. (Original post by amygardiner)
For the seatbelt question i said the large amount of force transferred from kinetic energy in such a short time can be fatal for the people in the car so seat belts absorb energy as elastic potential energy and increase the impact time
Was I wrong to mention momentum?

The roots of education are bitter, however the fruit is sweet.
8. (Original post by Amywillrevise)
Did anyone get 12 for the half life question? I see people saying they got 9, some saying 12. Which is right?????
I got 12 by doing 36/3

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9. Who else got virtually incompressible for the feature of liquids that means the pressure is the same
10. (Original post by Amywillrevise)
Did anyone get 12 for the half life question? I see people saying they got 9, some saying 12. Which is right?????
Wait what was the half life question??
11. (Original post by maxjackson5)
For the how much energy transferred was transferred by a 12V bulb on a normal current for 30 seconds question.

Everyone got 360J, but I am 95% sure it was 612J. Anybody get either of these answers?
I got 1.7 from the graph, then 51 (should've been coulombs but I put watts!), then 612 like you.
12. The exam was easier than I expected it to be.
13. (Original post by tsr1807)
Was I wrong to mention momentum?

The roots of education are bitter, however the fruit is sweet.
I wouldn't think so, if you mentioned the law of conservation of mass it would be relevant i guess
14. (Original post by Hneedham)
Done the exam, help on plum pudding
They believed the centre was positively charged
15. It was 12.

It takes 3 half life's to get from 80 to 10, and it was 36 years for all three to happen, so 36/3 is 12 years.

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16. (Original post by Amywillrevise)
Oh no I just worked it out and 9 is right!!! Damn I was wrong :'(
You were not wrong. 80 to 40 = 1 half life, 40 to 20 = 2 half lives, 20 to 10 = 3 half lives. 36 divided by 3 = 12. Sorry to anyone who put 9, that's wrong!
17. What did everyone say for the last question? I said that when the rocket launched closer to a 90 degrees angle it got to a higher height? No idea if that's right
18. u just lost ur house
19. (Original post by Amywillrevise)
What did everyone say for the last question? I said that when the rocket launched closer to a 90 degrees angle it got to a higher height? No idea if that's right
I said as the angle of projection increases, the range decreases. So basically I put what you put, not sure how that is 2 marks though?
20. (Original post by 11Jason11)
Who else got virtually incompressible for the feature of liquids that means the pressure is the same
Damn it I put the pressure/force is transmitted through the liquid equally in all directions??

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