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OCR B Advancing Physics in Action 17.5.12

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    Hi! I hope everyone is prepared. I'm feeling pretty good about this exam. I hope someone releases an unofficial markscheme after, they help loads! Good luck everyone!
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    Found this qutie hard. Probably <40/60 for an A. Not much higher.


    or maybe this was just me?
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    Yeah A LOT of people in my school found it hard, so hoping for low grade boundaries.
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    So bloody hard
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    (Original post by aidanatkin)
    Hi! I hope everyone is prepared. I'm feeling pretty good about this exam. I hope someone releases an unofficial markscheme after, they help loads! Good luck everyone!
    how did u find it??
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    I found this so much harder than any past papers I'd done, realised I'd gone 4kw too high for the 'one cup' kettle question /: Didn't really leave myself enough time for the question on the polarising filters in 3d glasses, found it unusual to see that question on significant figures, but I guess it was an easy mark, overall though I don't feel happy with how I did /: Does anyone remember what they put for their estimate of strain on an elastic band? o:
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    (Original post by aidanatkin)
    Hi! I hope everyone is prepared. I'm feeling pretty good about this exam. I hope someone releases an unofficial markscheme after, they help loads! Good luck everyone!
    How can they 'help'?

    Maybe its nice to confirm your 100% but for most of us it ruins our summer ;P

    Good Luck.
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    (Original post by LauraMuser)
    I found this so much harder than any past papers I'd done, realised I'd gone 4kw too high for the 'one cup' kettle question /: Didn't really leave myself enough time for the question on the polarising filters in 3d glasses, found it unusual to see that question on significant figures, but I guess it was an easy mark, overall though I don't feel happy with how I did /: Does anyone remember what they put for their estimate of strain on an elastic band? o:
    I'm also feeling quite bad.
    Hopefully we'll be saved by:
    1) grade boundaries have been as low as 34/60 for an A on this paper. That's about 50/60 for full UMS
    2)The paper is only 30% of the AS. Can still be pulled up massively by the other one (which is easier and 50%) and coursework


    I put 5 (a 5 cm rubber band would stretch about 25cm?)
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    I found it really hard as well, all the emf questions I counted up the ones I was confident on and I reckon I got about 43/60 I hope the grade boundaries are OK
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    (Original post by Oglogski)
    I'm also feeling quite bad.
    Hopefully we'll be saved by:
    1) grade boundaries have been as low as 34/60 for an A on this paper. That's about 50/60 for full UMS
    2)The paper is only 30% of the AS. Can still be pulled up massively by the other one (which is easier and 50%) and coursework


    I put 5 (a 5 cm rubber band would stretch about 25cm?)
    I hope so, I haven't spoken to anyone who's been totally confident on this exam, so I really do hope the grade boundaries are low.
    And true, I hope the second paper isn't as difficult >.<

    Actually that makes sense, I put 0.5 imagining it not to have stretched that much o: Oh well
    Good luck for your results
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    I put 0.5 as well, I assumed it'd stretch just over double its length which is about 2 times and so closer to 0.5 than 5 maybe they'll be a bit lenient, I hope so!
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    Yeah, me too!
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    That's the third time i've done this exam and once again I don't think I've done well, I should be aiming for a high B/ A but I just found that was really hard,
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    I've never done so badly in an exam in my life. Was predicted an A but admittedly I didn't do loads of revision but I would be lucky to get an E, I would be ecstatic if I got a D after that. Need to revise like crazy for next friday
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    so what did people put the the kettle one and the strain on an elastic band one?

    also the resolution, diameter thingybob, what did people get cause i'm 99% sure I did it wrong :/
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    For those of you who put 0.5 strain on the elastic band, I looked at the 2011 past papers and some on the questions in there indicate 5 is a much more likely answer, although it does vary a lot - maybe they will be lenient..

    As for the kettle, I put 50.. is that correct?
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    For the elastic band/kettle one I put 0.5 for the elastic band and 5kw for the kettle. If you look online most kettles tend to be between 1 and 3 kw therefore 5 is kind of in the right magnitude and as for the elastic band I would expect it to stretch by less than twice its original length - certainly nothing like 5x - and they wouldn't be the same answer surely?
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    typo - i put these answers too - god i'm stupidly stressed out about this! What did you guys put for the galaxy resolution, light year one?
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    I couldn't answer the galaxy one, i forgot how to work it out :/
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    How did you guys work out the "Voltage Drop" ?

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