Talking Physics

Question Help???

This topic contains 4 replies, has 3 voices, and was last updated by  Luke Horne 2 years, 7 months ago.

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  • #47475
    Profile photo of Andrew Normand

    Hi All can anyone explain to me how you get the answer to Q14 for the OCR Modelling physics paper (set 2) the 2nd practice paper they released. The question is:

    Q14 modelling physics

    The answer according to the markscheme is A. I can get B but cannot work out how they have A as the answer. Please help??

  • #47476
    Profile photo of Andrew Normand

    I agree with you, the answer should be B.

  • #47479
    Profile photo of Andrew Normand

    I got B as well. To get A, they used 1 year instead of 1 day for T. If you calculate \frac{2\pi}{365\times24\times60\times60} = 1.99\times 10^{-7}. So that is the error.

  • #47480
    Profile photo of Andrew Normand

    Thank you both Matt for clarifying precisely why its wrong and Luke for also helping me feel confident I’m not just losing the plot! Cheers both

  • #47481
    Profile photo of Andrew Normand

    Good spot, Matt. I couldn’t figure out what they’d done.

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