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Edexcel A2 Physics Unit 5 'Physics from Creation to Collapse' watch

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    What do yu think the A grade boundry would be?
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    I thought it was easy overall although a couple of the multiple choice were difficult and I realised after the exam I forgot to divide the total distance moved by the bridge by 2 to find amplitude.
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    (Original post by WindsorHL3)
    I thought it was easy overall although a couple of the multiple choice were difficult and I realised after the exam I forgot to divide the total distance moved by the bridge by 2 to find amplitude.
    I thin I too have made the same mistake.****
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    C'mon arnt you'll discussing the paper?
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    (Original post by Pegasus92)
    I thin I too have made the same mistake.****
    lol I was so annoyed at myself when my mate told me I made that mistake, when I came out I couldn't think of anything I got wrong and then he told me.:mad:
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    (Original post by Pegasus92)
    What do yu think the A grade boundry would be?
    About 60-65. It wasnt hard at all I think.
    I did divide that total distance by 2 for the bridge's amplitude. :p:

    (Original post by Pegasus92)
    How did you do the mouse thing?
    Well, since it was placed vertically first
    f = 1/T
    T = 2п√(m/k)
    F = ma = -kx
    a = g = 9.81
    m = 0.15
    x = 0.2
    Not really sure about the numbers.
    It could be done a bit different way.. I did both.
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    I might have lost 15 marks in total or more.
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    (Original post by yadas)
    About 60-65. It wasnt hard at all I think.
    I did divide that total distance by 2 for the bridge's amplitude. :p:


    Well, since it was placed vertically first
    f = 1/T
    T = 2п√(m/k)
    F = ma = -kx
    a = g = 9.81
    m = 0.15
    x = 0.2
    Not really sure about the numbers.
    It could be done a bit different way.. I did both.
    How many marks was that amplitude question?
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    Did everybody get an extra formulae list, as there was a mistake in the paper?
    I guess yes, as the papers are supposed to be the same around the globe..
    Did you spot the mistake in the formuale? :p:
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    (Original post by Pegasus92)
    How many marks was that amplitude question?
    Oh, this was (I think the only one) 5 mark question..
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    (Original post by yadas)
    Oh, this was (I think the only one) 5 mark question..
    Do you remember the question, the parts concerning amplitude?
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    (Original post by yadas)
    Did everybody get an extra formulae list, as there was a mistake in the paper?
    I guess yes, as the papers are supposed to be the same around the globe..
    Did you spot the mistake in the formuale? :p:
    yeah got it?
    What was the mistake??
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    (Original post by Pegasus92)
    yeah got it?
    What was the mistake??
    Hehe.. they put for G (gravitational constant) units Nm-2kg-2 instead of Nm2kg-2.

    (Original post by Pegasus92)
    Do you remember the question, the parts concerning amplitude?
    11 or 18? Or multiple choice?
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    (Original post by Bronze92)
    the axes are obviously wrong, right?
    EDEXCEL -.-"
    Yes - the axis labels are the wrong way round. The periodicity should be shown as being in time; the child cannot be in several places at once. If the labels are swapped to make them right, then maximum velocity is (amplitude)*(angular velocity) = Aω. A=1.5 metres and ω = 2π/period = 2π/3 radians per second, so max velocity is 1.5 * 2π/3 = π metres per second.
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    (Original post by yadas)
    Hehe.. they put for G (gravitational constant) units Nm-2kg-2 instead of Nm2kg-2.


    11 or 18? Or multiple choice?
    18
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    - The mistake on the formula sheet was just an error for the units of 'G'

    - Grade boundaries for physics (as far as I know) have never been 80% of a paper. 58 would seem fair.

    - I forgot to divide that thingymajig by two to find the amplitude

    - But the paper was sexy :sexface:
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    (Original post by JayAyy)
    - The mistake on the formula sheet was just an error for the units of 'G'

    - Grade boundaries for physics (as far as I know) have never been 80% of a paper. 58 would seem fair.

    - I forgot to divide that thingymajig by two to find the amplitude

    - But the paper was sexy :sexface:
    Jay did find f in Q11?
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    (Original post by Pegasus92)
    18
    Yeah, I remember it.
    What's your question?
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    (Original post by Pegasus92)
    Jay did find f in Q11?
    I got 1.11Hz
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    (Original post by yadas)
    Yeah, I remember it.
    What's your question?
    My question is what was the Question?
 
 
 
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