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!! Physics HL LC '16 - Predictions, guesses, discussion, etc.

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    #182
    Johnny M 256678
    Registered Users Posts: 1 ✭Johnny M 256678


    Brian_R wrote: »
    This year I could see things like hookes law / simple harmonic motion, semiconductors, and electromagnetism coming up in the long questions, fairly sure none of them came up since like 2010 as long questions apart from q 12.

    Think there might not be a full long question on nuclear physics as it's come up every year for a good while aswell.

    Possibly a heat long question? Last time it came up was 2011

    you basically predicted the whole paper .... fairplay


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    #183
    Lebensraum
    Registered Users Posts: 4 ✭Lebensraum


    I think the answer, well what i said, for the question about coherent sources of light is to make sure the diffraction grating on the slits is less than the wavelength of the monochromatic source of light. If you look at the coherence wiki page it says something similar to what I wrote. Weird paper imo, having particle on q12, first time an experiment from last year coming up, nichrome wire having the resistivity and resistance vs temperature to it and also that q6 was odd I thought. I'm estimating I got 350-365/400 hopefully make the bell curve lol. Pls be nice chemistry pls or i'll be repeating


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    #184
    bookworm20
    Registered Users Posts: 38 ✭bookworm20


    bookworm20 wrote: »
    How may neutrons are neccesary for a safe self sustaining fissin reaction?

    bump


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    #185
    adam240610
    Registered Users Posts: 814 ✭✭✭adam240610


    bookworm20 wrote: »
    bump

    At least one to cause further fission


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    #186
    Lebensraum
    Registered Users Posts: 4 ✭Lebensraum


    bookworm20 wrote: »
    bump

    I said one as you only need one for a chain reaction and it's easier to control as if you have say 2 then if one gets loose then it can lead to a runaway reaction


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    #187
    DownOneTourist
    Registered Users Posts: 182 ✭✭DownOneTourist


    Lebensraum wrote: »
    I said one as you only need one for a chain reaction and it's easier to control as if you have say 2 then if one gets loose then it can lead to a runaway reaction

    I said 1 also. I wasn't sure whether it was one two or three.


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