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    (Original post by PhysicsIP2016)
    but dark matter increases the mass of the universe? Surely it would increase the density by that logic?
    Yes, it should. :/ Idk lol. I'm confused.
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    (Original post by PhysicsIP2016)
    but dark matter increases the mass of the universe? Surely it would increase the density by that logic?
    Is the answer actually B? I would go for A.
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    (Original post by mrbeady9)
    Is the answer actually B? I would go for A.
    I'd go for A too hmm maybe its cos it mentions expanding so if its expanding faster it'll expand for like well forever? idek lol
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    (Original post by mrbeady9)
    Is the answer actually B? I would go for A.
    It is B - if it was A the rate of expansion would be slowing down. I actually thought it was D because the age of the universe is inversely proportional to the velocity by Hubble's Law but I must have been overthinking it :P
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    (Original post by PhysicsIP2016)
    It is B - if it was A the rate of expansion would be slowing down. I actually thought it was D because the age of the universe is inversely proportional to the velocity by Hubble's Law but I must have been overthinking it :P
    :lol:
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    God damn physics , panicking like hell , don't know what to do after I've done all the past papers
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    (Original post by Pudge666)
    God damn physics , panicking like hell , don't know what to do after I've done all the past papers
    You can go through examiner reports, revise weak points and theory. Or you can try questions from other boards such as AQA etc if you wanna test yourself!
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    Hardest past paper attempted by you guys till now?
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    (Original post by apocolyptic)
    Hardest past paper attempted by you guys till now?
    personally i'd say June 2012
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    lads how many papers can one do in a day if they fully bangout need to start now
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    Anyone know which paper had the lowest grade boundaries over the last 5 years or so? I also wanna give the hardest paper a try, reckon tomorrow might be a very hard paper after unit 4 being pretty simple
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    (Original post by Benji12345)
    Anyone know which paper had the lowest grade boundaries over the last 5 years or so? I also wanna give the hardest paper a try, reckon tomorrow might be a very hard paper after unit 4 being pretty simple
    IAL 2015 has the highest grade boundaries - 52 for an A
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    (Original post by PhysicsIP2016)
    It is B - if it was A the rate of expansion would be slowing down. I actually thought it was D because the age of the universe is inversely proportional to the velocity by Hubble's Law but I must have been overthinking it :P
    I was thinking along the same lines as you - do you know why the answer can't be D? Thanks!
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    Could anyone explain Q5 of the 2015 IAL paper please?

    https://a4942901ab27cf2817f7a4f7497d...%20Physics.pdf
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    (Original post by candycake)
    Could anyone explain Q5 of the 2015 IAL paper please?

    https://a4942901ab27cf2817f7a4f7497d...%20Physics.pdf
    Etotal = 1/2.k.(A)^2
    when simplified its E = (A)^2

    since A=2A .*. its (2A)^2
    simplified E = 4A^2

    .*. its 4x the original E value .*. 4E. @ answer 'C'.
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    (Original post by XxKingSniprxX)
    Etotal = 1/2.k.(A)^2
    when simplified its E = (A)^2

    since A=2A .*. its (2A)^2
    simplified E = 4A^2

    .*. its 4x the original E value .*. 4E. @ answer 'C'.
    Thanks - Which equation are you using?
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    (Original post by candycake)
    Could anyone explain Q5 of the 2015 IAL paper please?

    https://a4942901ab27cf2817f7a4f7497d...%20Physics.pdf
    Is the answer C?
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    (Original post by candycake)
    Thanks - Which equation are you using?
    Etotal = 1/2 . k . (A)^2

    (Original post by sabahshahed294)
    Is the answer C?
    Yes.
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    Guys , I keep making dumb mistakes with temperature calculation , how can you tell if you have to use kelvin or celsius
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    (Original post by XxKingSniprxX)
    Etotal = 1/2 . k . (A)^2
    Sorry - I'm sure this is really obvious but I still can't place the equation. Is it in the formula sheet? I've tried GPE, elastic strain energy etc.
 
 
 
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