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The Physics PHYA2 thread! 5th June 2013 Watch

  • View Poll Results: What mark do you think you got out of 70?
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    21-40
    12
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    41-50
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    14.50%
    51-60
    79
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    61-70
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    (Original post by lebron_23)
    [B][U][SIZE=3]PHYA1 =
    Question 6 – Don’t even know, seemed cool..

    6) First phase difference was 90 degrees or pi/2. Second was 270 degrees or 3pi/2
    b) Oscillation between maximum and minimum amplitude; i.e moves up and down
    c) Polarisation only occurs in transverse waves; mention something about plane of polarisation
    d) Define frequency
    e) 750m
    .
    For part a) I did 1/4 lambda and 3/4 lambda, would that be considered correct?
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    (Original post by pearson1995)
    really hard

    I needed a B in this.... dont think I got it.... how did everyone else find it?
    i think it could have gone worse though! the 6 marker was pretty nice! i just need a B as well and think i should get it
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    doesn't intensity increase as it's deflected more?
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    I may of lost 4 marks being harsh with myself hopefully that doesn't affect my chances of a 120ums
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    (Original post by _JasmineMistry)
    So people stressing over makes, what do you guys want to do at uni?
    We want to study at cambridge so we need full(ish) marks


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    (Original post by _JasmineMistry)
    doesn't intensity increase as it's deflected more?
    Not in the single slit no
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    what question did everyone think was the hardest in the paper?
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    in the 6 marker how many marks will it have been for stating newtons first law correctly, newtons second law correctly and state that the gradient of a velocity-time graph is acceleration?

    also would i get the marks for saying 90 degrees 'out of phase', and 270 degrees 'out of phase'?
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    (Original post by _JasmineMistry)
    So people stressing over makes, what do you guys want to do at uni?
    Maths
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    (Original post by chatty95)
    in the 6 marker how many marks will it have been for stating newtons first law correctly, newtons second law correctly and state that the gradient of a velocity-time graph is acceleration?

    also would i get the marks for saying 90 degrees 'out of phase', and 270 degrees 'out of phase'?
    First one 3-4 marks depends what you said I'm sure you wrote about it in a lot more sophisticated and detailed manner. Second bit 2 marks fine
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    Anyone want to do engineering?
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    What do you guys think the 120ums boundary will be?
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    (Original post by chatty95)
    in the 6 marker how many marks will it have been for stating newtons first law correctly, newtons second law correctly and state that the gradient of a velocity-time graph is acceleration?

    also would i get the marks for saying 90 degrees 'out of phase', and 270 degrees 'out of phase'?
    You may get a couple marks for that but I think it was looking for how the laws have an effect and how the acceleration is changing i.e decreasing acceleration
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    (Original post by _JasmineMistry)
    Anyone want to do engineering?
    Ohh mee. ChemEng though? what about you?
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    Guys, for the question where you got 1.0j. What was the number of blocks you estimated? I estimated it was 40 blocks.
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    (Original post by IWantSomeMushu)
    What do you guys think the 120ums boundary will be?
    I would say 65ish?


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    (Original post by Davelittle)
    For prove the angle is 30 degrees I got 31.9, as did 3 other people.


    Did anyone else?
    I did too
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    (Original post by IWantSomeMushu)
    What do you guys think the 120ums boundary will be?
    Standard of 62 marks.
    Aren't you the "self-teacher", hope you did well.
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    (Original post by IWantSomeMushu)
    What do you guys think the 120ums boundary will be?
    68 / 70
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    (Original post by Bookaky)
    68 / 70
    No way! Don't crush people's hopes like that. It was nowhere near as easy as you're making it out.
 
 
 
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