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

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    Glad I dont do turning points as the grade boundaries for astro are quite low (because many schools who have limited sources do astro although not always true)
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    (Original post by Gome44)
    I have no idea then, but remember you've been given diameter
    Ah nvm I know what they've done, thanks anyway
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    I know that to produce a real image with a converging lens you need the object more than a focal length away from the lens but how much further for diminished and how much further for magnified??
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    Is stellar evolution even on the spec ?
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    Do people really think it's likely that deriving the kinetic theory will come up? I would have said it's worth more than 6 marks.

    Can they set questions that are worth more than 6 marks?
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    (Original post by Mehrdad jafari)
    It does for me
    Attachment 431243


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    Wth is my calc wrong or what.
    I will try it again. This not good for me

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    (Original post by Gome44)
    I have no idea then, but remember you've been given diameter
    They've used the diameter but shouldn't you half it to get the radius? :/
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    (Original post by Ilovemaths96)
    Finally someone else who does applied!
    Jun 14 - wheel design/ moment of inertia
    June 13 - comparison between real and theoretical diesel cycles
    June 12 - angular momentum, moment of inertia
    June 11 - design features of a flywheel
    June 10- description of theoretical petrol cycle (otto)

    Probably gonna swing back to engines, which i dont mind.
    Hope its an easy comparison
    I know hardly anyone does it! Thank you so much for writing out the list! I think it is probably going to be on engines too. Or maybe fridges and heat engines?
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    Surely a 6 marker cannot be based of such small talk?
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    (Original post by saad97)
    They've used the diameter but shouldn't you half it to get the radius? :/
    4πr^2 =πd^2
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    (Original post by Mehrdad jafari)
    It does for me
    Attachment 431243


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    You are right i calc is messed up.
    Thnx though

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    can someone explain 1biii) http://filestore.aqa.org.uk/subjects...1-QP-JUN14.PDF
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    (Original post by a.a.k)
    You are right i calc is messed up.
    Thnx though

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    It's cool man. Good luck for tommorow


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    (Original post by betbi3etwerrd)
    Surely a 6 marker cannot be based of such small talk?
    They have asked a 6 marker on CCD's before and thats even smaller than stellar evolution in terms of content
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    (Original post by Mehrdad jafari)
    It's cool man. Good luck for tommorow


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    Thnx goodluck to u

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    (Original post by SuperMushroom)
    They have asked a 6 marker on CCD's before and thats even smaller than stellar evolution in terms of content
    No but in the teachers booklet there is a whole page on CCDs.
    Whereas stellar evolution is like a sentence or two.
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    Quasers might come up as it has never cropped up before nor did evolution of a star
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    Do you need to know the processes of stellar evolution for this like all the hydrogen shell burning and all that or do you just need to know the sort of general thing, like main sequence (sun) > red giant > white dwarf and about stars massive enough turning into black holes/supernovae/neutron stars?
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    (Original post by betbi3etwerrd)
    No but in the teachers booklet there is a whole page on CCDs.
    Whereas stellar evolution is like a sentence or two.
    If you think about it.. you can write alot more on how a star can evolve depending on its solar mass, in comparison to the operation of a CCD.

    If you cant then maybe you should have another look over page 173 -175 of the textbook as there is quite alot of information on stellar evolution
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    Sorry to bother but can someone help me with 1biii) and 1ci) please? http://filestore.aqa.org.uk/subjects...1-QP-JUN14.PDF
 
 
 
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