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OCR Twenty First Century Science Physics P1-7 *Official Thread 2016*

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Original post by kish9600
My answers for the P456 (the ones I can remember for the short answers anyway):
• 22Ni
• 11J
• 5m/s (pretty sure is wrong)
• Iron core
• Eve
• Ben
• 5 Ohms
• 1.5V
• 3V
• 0.2A
• 45,000,000,000 J
• Magnetic induction
• The Wavey looking voltage thing
• C, for the half-life, as gamma less ionising in the body
• Something about perceived risk is over exaggerated by the calculated risk
• Alpha is not strong enough to go through
• Beta- second last box
• Gamma- last box
That’s all I remember, but itd be nice to compare what you guys got, to see how badly I actually did lol


Wasn't beta the second box as it would be stopped by aluminium and gamma the first box as it would pass through card and aluminium?
What did people say for Pete?
Original post by Speedbird129
What did people say for Pete?


Was that the guy who thought there was a high risk of nuclear plant explosion?
I think it was something to do with an interaction pair or resultant force?
Can I have P7 2015 mark scheme please

Original post by Aliondo
Teacher pulled through. https://drive.google.com/a/preston-manor.com/file/d/0B6dVJdZdxvLrUVFBUTFFYTk0WWc/view?ts=5762e5d9

Full list of 2015 markscheme right there ^. If you need P7, post here.
Original post by Speedbird129
I think it was something to do with an interaction pair or resultant force?


Oh - was it the one that said why isn't the forces between the lorry and road an interaction pair?
yeah, I believe so..
Original post by Speedbird129
yeah, I believe so..


It was because the forces were acting on different objects - the reaction was working on the lorry from the road and the weight was acting on the road from the lorry. In an interaction pair the forces are both acting in the same object
Original post by NiamhM1801
It was because the forces were acting on different objects - the reaction was working on the lorry from the road and the weight was acting on the road from the lorry. In an interaction pair the forces are both acting in the same object


Thank you!
Original post by NiamhM1801
It was because the forces were acting on different objects - the reaction was working on the lorry from the road and the weight was acting on the road from the lorry. In an interaction pair the forces are both acting in the same object


Remember to pop over to the discussion @ http://www.thestudentroom.co.uk/showthread.php?t=4115407 Good lcuk for your further exams next week!
Original post by Aliondo
Teacher pulled through. https://drive.google.com/a/preston-manor.com/file/d/0B6dVJdZdxvLrUVFBUTFFYTk0WWc/view?ts=5762e5d9

Full list of 2015 markscheme right there ^. If you need P7, post here.


Could I have the 7's please?
Original post by Speedbird129
Thank you!

No problem :smile:
Original post by Speedbird129
Remember to pop over to the discussion @ http://www.thestudentroom.co.uk/showthread.php?t=4115407 Good lcuk for your further exams next week!


I will do - think I've posted on it before but I'll definitely post more when those exams are taking place :smile:
Isn't one of the answers 4.5x10^9 not 4.5x10^10?
Original post by Breathmint
Isn't one of the answers 4.5x10^9 not 4.5x10^10?


Yeah it's 4x10⁹.
The actual made unofficial mark scheme is up on its own thread: http://www.thestudentroom.co.uk/showthread.php?t=4171011
if you want to check that out, I think everything is in order there but there are a few questions that aren't. I'm also pretty sure that every question is actually on there too :smile:
Original post by Speedbird129
Could I have the 7's please?


P7 HIGHER TIER MARK SCHEME:
https://drive.google.com/a/preston-manor.com/file/d/0B_NF5SujBy8Aanp6bzlEeE1GWk0/view
i gotchu bros.
Original post by Aliondo


Thank you!
Original post by Speedbird129
Thank you!


It's the other way around, interaction pairs work on different objects whereas the forces were acting on the same
Original post by Lewisjj
It's the other way around, interaction pairs work on different objects whereas the forces were acting on the same


I now know, thank you though.
I think the actual answer should have been 'because the weight of the lorry was caused by the Earth's gravity, not by the road' or something similar - that's what bitesize says.
Original post by NiamhM1801
I now know, thank you though.
I think the actual answer should have been 'because the weight of the lorry was caused by the Earth's gravity, not by the road' or something similar - that's what bitesize says.

I imagine for two marks you would have to say that the forces were both acting on the lorry aswell as the road not causing the weight force
Original post by Lewisjj
I imagine for two marks you would have to say that the forces were both acting on the lorry aswell as the road not causing the weight force


Probably. All I know is I got no marks for it haha

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