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  1. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Need notes for Physics and Chemistry paper 3. Any good sites, or links to other threads? Thanks in advance :D
  2. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Wow this is perfect thanks!
  3. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Thanks :D
  4. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Ok guys gl for your IG's. Just remember all pp6 physics questions are made so that you can figure it out. So if can't find the answer try to figure it out. Use logic (y)
  5. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    np (y)
  6. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    np (y)
  7. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    The er says that across the power supply is wrong. If you read ahead it says "For circuit 1, the student places the contact S on the resistance wire AB at a distance of 0.500m from A. He measures the p.d. V across the wire between A and S and the current I in the circuit." So i'm guessing you...
  8. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    That's exactly what you're supposed to do. If suppose a graph has 5 divisions and the values range from 50 to 100. Then you start with 50 instead of 0
  9. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Unless it's an obvious curve (typically for temperature). Then you cannot use a ruler.
  10. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Np (y) When S is connected it'll be after the resistor. You want to know the potential before the resistor and the potential after. Although I'm not so sure about the voltmeter. Here's what the examiners report says "Many candidates found it difficult to score full marks here. Most candidates...
  11. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    One resistor is on AB the other is on CD. These resistors represent the resistance of the wires AB and CD. When drawing circuit diagrams the wires in them are assumed to be perfect conductors. The wires AB and CD have a certain resistance that's why on the circuit diagram you represent that...
  12. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    It's ok lets tackle these doubts one by one. T/s is a twentieth of t/s. You see, t/s is the time for 20 oscillations. T/s is the time for 1 oscillation. So just divide t/s by 20. Now to plot it, your graph must scale from 0.6 to 1 (range in which T^2 occurs) . There are 10 divisions. So you can...
  13. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Just yout t/s squared so if t/s is 0.95 then t^2/s^2 = 0.95^2 = 0.9025 0.9025 to 3 significant figures is 0.903 which is the answer in the marking scheme
  14. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Np always happy to help (y)
  15. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    I did that's the right answer. Was just wondering if pendulum would also work. Probably not since my answer's not in the mark scheme. Thanks :D
  16. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

  17. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    For http://papers.xtremepapers.com/CIE/Cambridge%20IGCSE/Physics%20(0625)/0625_s12_qp_62.pdf question 1d) would using a string attached to a ball bearing and comparing it to the marks on the rule be a suitable answer?
  18. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Btw everybody. This is probably not that important, but for physics paper 6, typically the first question don't forget to write down the column heading
  19. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    Np (y) I certainly think doing the variants will be really helpful. It'll give you a wider range of questions to answers, but try your own region's papers first. Gl for your IG's
  20. Lightning soul

    Physics, Chemistry and Biology: Post your doubts here!

    You're supposed to estimate the mass of the ruler. It says "The student chooses a mass M which is similar to the mass of the metre rule". You're supposed to be able to estimate the mass of a metre rule. That's why they gave such a large range
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