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AQA Physics PHYA5 - Thursday 18th June 2015 [Exam Discussion Thread] Watch

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    What did people get for the absolute magnitude question


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    (Original post by SuperMushroom)
    What did people get for the absolute magnitude question


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    -1
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    (Original post by SuperMushroom)
    What did people get for the absolute magnitude question


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    -8.7*10^-3

    seems wrong but whatever
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    The turning points question on measuring light speed.. Anyone do distance over time?
    Other than that it was fine, some answers i got:
    24V
    11m
    250 muons
    First box
    4.69x10^5V
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    (Original post by dominicwild)
    Apart from the 6 marker on nuclear and thermal. I thought that was good. I had literally 0 idea how to answer that 6 marker!
    I guess the graph of v against temp (or p against temp) is one of those things you remember or don't.
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    (Original post by StarvingAutist)
    -8.7*10^-3

    seems wrong but whatever
    I got -0.009 or something


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    I've messed up so bad

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    (Original post by StarvingAutist)
    -8.7*10^-3

    seems wrong but whatever
    Yes that's what I got! A very small negative.

    Think I put this in my calc:

    1.981 - 5log(25/10)

    ??
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    (Original post by SuperMushroom)
    What did people get for the absolute magnitude question


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    Very close to zero I think it was -8.7X10-3
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    (Original post by k9000)
    The turning points question on measuring light speed.. Anyone do distance over time?
    Other than that it was fine, some answers i got:
    24V
    11m
    250 muons
    First box
    4.69x10^5V
    Think I got all of them but not sure if they're actually right...
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    (Original post by SuperMushroom)
    I got -0.009 or something


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    Sweet, I guess the difference is just rounding

    (Original post by bwr19)
    Yes that's what I got! A very small negative.

    Think I put this in my calc:

    1.981 - 5log(25/10)

    ??
    That's what I did
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    (Original post by Tomh97)
    Think I got all of them but not sure if they're actually right...
    The only two others doing TP at my school got them too, how did you find TP overall?
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    What a Beauty
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    (Original post by sophiebeth100)
    I did medical. I hate lens equations so I know my answers is most likely wrong, but I got 0.19m. How about you?
    Wasn't the object at 0.25m? I did get 0.19m meters initially but realised that a diverging lens should have made the image further away than the object, so I fiddled around with the equation til I got a value over 0.25m, can't remember what it was though...
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    (Original post by Emmanuel12344)
    What a Beauty
    It was, very chuffed!
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    (Original post by HenryHein)
    I guess the graph of v against temp (or p against temp) is one of those things you remember or don't.
    Did you write about getting values for V when T is lowered incrementally and P is kept constant? And then extrapolating your line down to the x-axis to find absolute zero?
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    Feel sorry for the examiner that gets my papers, both of my 6 markers had 20% full of scribble and crossed out
    We were supposed to do this?
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    That sounds much more logical, but I expected to screw up the lens equation anyway. how did you find the rest of the medical paper?
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    absolute mag was -0.093ish
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    (Original post by jf1994)
    Did you write about getting values for V when T is lowered incrementally and P is kept constant? And then extrapolating your line down to the x-axis to find absolute zero?
    Yes, like 000alex' sketch but in words (also explained you could plot P against T as well), so with V against t pressure was constant and P against T, V was constant
 
 
 
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