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    (Original post by ty19999)
    is it just me or was it easier than chem and bio?
    It was certainly easier than chemistry, but the biology one...well, that's certainly subjective!
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    (Original post by haniyasaeed)
    would you get a mark if you put for maximum diffraction the size of the gap has to be about the same size or almost the same size?
    The smaller the gap the larger the diffraction
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    you know the similarities of microwave and there was another wave, can I put they both heat materials and substances e.g. food?
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    (Original post by ihatehannah)
    for disadvantages I wrote radioactive waste and non-renewable materials are used so may run out.
    i wrote that too!
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    (Original post by ty19999)
    is it just me or was it easier than chem and bio?
    I thought that aswell
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    (Original post by ihatehannah)
    for disadvantages I wrote radioactive waste and non-renewable materials are used so may run out.
    I put that too
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    (Original post by ty19999)
    is it just me or was it easier than chem and bio?
    It was definitely easier than Biology, not sure about Chemistry
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    (Original post by jackbarry1999)
    The smaller the gap the larger the diffraction
    yassssss i wrote [email protected]!#!
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    (Original post by Ellie118)
    I put that too
    is it correct if i wrote 'its difficult to get rid of when it's not in use anymore'
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    (Original post by haniyasaeed)
    would you get a mark if you put for maximum diffraction the size of the gap has to be about the same size or almost the same size?
    Yeah that's what I put


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    What did you guys put for the last question on convention currents in the coffee mug?
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    (Original post by rayestar)
    is it correct if i wrote 'its difficult to get rid of when it's not in use anymore'
    I'm not sure, you probably will though
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    I think the grade boundaries will be high as many people found it easy! maybe 48 for an A*
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    (Original post by jackbarry1999)
    The smaller the gap the larger the diffraction
    They should be equal. If the gap is smaller than the wavelength, the wave cannot pass through the gap. That's why your microwave oven uses small holes for trapping the microwave but not a full metal plate
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    (Original post by jackbarry1999)
    The smaller the gap the larger the diffraction
    For maximum diffraction the gap has to be equal to the wavelength
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    There was so much on there that I should have known ,but overall it went well
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    What did people get for the average temperature change between 0-100 seconds or something?
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    (Original post by Qwec)
    What did people get for the average temperature change between 0-100 seconds or something?
    0.07 °C/s



    I hope I wrote down cosmic and not cosmetic.
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    (Original post by haniyasaeed)
    would you get a mark if you put for maximum diffraction the size of the gap has to be about the same size or almost the same size?
    I put that
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    (Original post by Elliec156)
    Reflected sound wave?


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