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  1. chamiya

    As physics p1 MCQS YEARLY ONLY.

    Okay, so Young Modulus = (Force/Area)/(Extension/Original length). They have given Young modulus, Area and Original length. We calculate force by 70 x 9.81. So, extension of 1 wire = ((70 x 9.81) x 20)/(3.2 x 10^-6 x 2.1 x 10^11). There are 200 wires in all, so total extension is given by the...
  2. chamiya

    Physics Paper 5 tips

    Correct me if I'm wrong please, but as I saw it, the gradient that was found in c iii) = 2gh.
  3. chamiya

    Chemistry P52 GT

    Never saw this coming. Prepared myself for huge analysis question and what came was comparatively easier than the other past papers I did. Which is a relief. But 1st question could have been taken out of a P4 paper.
  4. chamiya

    Chemo P5 tips

    They tell us to determine log(rate of reaction), reciprocal of Temperature, and rate of reaction. They mention that rate of reaction = reciprocal of time taken. Therefore, the column headings should look something like: log(1/t) [no units] , 1/T [K^-1] , 1/t [s^-1] Note that log of something...
  5. chamiya

    Chemo P5 tips

    Its just an efficient and simple way to calculate the gradient and get credit without too many mistakes. If the graph is a straight line, take a reasonably long part and draw two perpendicular lines (parallel to the x and y axes) that meet the line. Read off the scales and note down the...
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