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    (Original post by money-for-all)
    0.62
    For the moment question 0.62 is the wrong answer. If the sphere is uniform then the force acts halfway through it, so 12 + radius =14.5cm. Then it is 0.145×5=0.725Nm, youll probably get 1 mark though
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    (Original post by 456CJ)
    Did anyone get alpha as 10
    yeah i did that was a trippy one
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    (Original post by champ_mc99)
    What was the phase difference pi/8?
    Put pi/4 coat it was 1/8th of a wavelength path difference. thus phase difference was 2pi/8 so that simplifies to pi/4
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    (Original post by champ_mc99)
    What was the phase difference pi/8?
    Yeah thats what I got
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    (Original post by 456CJ)
    Did anyone get alpha as 10
    10.1? I did.
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    (Original post by champ_mc99)
    What was the phase difference pi/8?
    i got pi/4
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    anyone ran out of time? was a hard paper tho
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    I bet i can predict the future,
    this is where your going to be next year

    http://www.thestudentroom.co.uk/show....php?t=4055791
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    And the maximum emf I got 1462.5
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    (Original post by mstrcvk)
    For the moment question 0.62 is the wrong answer. If the sphere is uniform then the force acts halfway through it, so 12 + radius =14.5cm. Then it is 0.145×5=0.725Nm, youll probably get 1 mark though
    i got .725 but i gave it as .7 as the 5N was 1 sigfig do you recon thats acceptable?
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    35 for an A
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    (Original post by 456CJ)
    And the maximum emf I got 1462.5
    yeah i got around that but i think it depends on your graph
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    guys why did we choose physics
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    (Original post by mstrcvk)
    Yeah thats what I got
    It was 1/8 of a wavelength (2pi), so pi/4
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    (Original post by metrize)
    35 for an A
    if that's the case maybe I can scrape a C
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    (Original post by ilovepotc)
    I got that
    I got that eventually, did a bit of trial and error and then worked backwards to check the answer haha.
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    (Original post by metrize)
    35 for an A
    Wishful thinking, I reckon 48 for an A
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    (Original post by 456CJ)
    Did anyone get alpha as 10
    Nahh I remember getting no answer for this one if I remember correctly
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    (Original post by Chickenslayer69)
    Think you had to use lambda = h/mv. With an alpha particle, there are 4 protons/neutrons, so the equation turns into lambda = h/4mv, leading to 4lambda = h/mv.
    Yeh I did 1/4 based on your logic as well. It's defo correct.
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    The paper is out of 69 or 70 still?
 
 
 
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