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    (Original post by Bertus3223)
    can someone please give me a link to jan 08, ive tried the other links but they dont work for my pc. I will appreciate it and best of luck to all
    try this
    http://homepage.ntlworld.com/keith.t...arkschemes.htm
    i think the full jan 08 markscheme might be there
    but am not sure
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    (Original post by Bertus3223)
    can someone please give me a link to jan 08, ive tried the other links but they dont work for my pc. I will appreciate it and best of luck to all
    Jan 08 markscheme:

    http://pburgess.net/AS_A2/Content/Pa...k%20scheme.pdf
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    http://www.thestudentroom.co.uk/show...1&postcount=13

    Link to the mark scheme is there.
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    thnx markschemes all work but the actual exam paper link still doesnt work, sorry for the inconvenience
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    could anyone tell me how to work out question a part ii on june 07 paper
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    can some1 explain a drift/spark chamber? What do we need to know about them?
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    just read the comprehension very carefully, first its a heater, then the heater forms bubble and after that bubble collapses causing ink to be ejected, haha i had a lot of trouble with it too lol
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    are you guys revising now, or just relaxing? my brain gave in a while ago, might jst look at accelerators today then call it a night..
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    (Original post by Bertus3223)
    thnx markschemes all work but the actual exam paper link still doesnt work, sorry for the inconvenience
    exactly
    the links for the papers do not work
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    spark/drift chambers anyone???
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    (Original post by sickhead2)
    Jan 08 markscheme:

    http://pburgess.net/AS_A2/Content/Pa...k%20scheme.pdf
    Thanks!
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    (Original post by PoojB)
    spark/drift chambers anyone???
    http://www.thestudentroom.co.uk/show...5&postcount=23
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    This is all I know about spark chambers;

    Series of parallel plates connected to a high voltage supply in an inert gas environment.
    The plates polarity alternates.
    Alpha particles or whatever enter the chamber and collide with target leaving a trail of ions.
    When alpha particles enter, the high Voltage is triggered by a Geiger counter.
    This high pd produces sparks.
    Captured using high speed photography.
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    thanks! sounds good
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    Guys, can someone take a look at question 1 e iii of the 05 paper and explain to me what the graph looks like and why it's like that.
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    wow, that link's brilliant!! thanks!
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    (Original post by Kalashnikov)
    Guys, can someone take a look at question 1 e iii of the 05 paper and explain to me what the graph looks like and why it's like that.
    It's a sinusoidal graph, with both positives and negatives.
    There are 5 wavelengths in 0.1 seconds, something like that has to be marked on the graph (comes from the 50Hz inversed to give period).

    Explaining why the graph is positive and negative is hard without a diagram, but basically as you approach alignment, you approach 0 charge. As you move away from alignment, you increase charge. The fact that there are two holes tells you that there are two poles...asjdhfkj I dunno how to describe this well sorry!
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    PHY6 is my favourite because when you read it, it sounds like "Physics" :p:
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    does the graph have the shape of a normal distribution curve with a width of 0.01s (starting from the origin) and a peak at 0.005s?
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    (Original post by discombob)
    It's a sinusoidal graph, with both positives and negatives.
    There are 5 wavelengths in 0.1 seconds, something like that has to be marked on the graph (comes from the 50Hz inversed to give period).

    Explaining why the graph is positive and negative is hard without a diagram, but basically as you approach alignment, you approach 0 charge. As you move away from alignment, you increase charge. The fact that there are two holes tells you that there are two poles...asjdhfkj I dunno how to describe this well sorry!
    y does the current become negative??
 
 
 

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