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  1. ZainH

    IGCSE Chemistry Revision Guide | According to syllabus

    Hm all right, I'll be sure to check that section out tomorrow! Great job guys ThatReallyReallyWeirdDude
  2. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    I've actually got a question myself, paper:http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Physics%20(0625)/0625_w08_qp_6.pdf Part 2)a) My brain kinda shut down.. soo.. help IS required x)
  3. ZainH

    IGCSE Chemistry Revision Guide | According to syllabus

    These notes > My textbook How did I not see this thread before D:
  4. ZainH

    Physics paper 6 2012 + chemistry paper 2 2012 discussions

    Yeah you measure the INSIDE edges of the blocks of wood, the ones that are touching the test-tubes.
  5. ZainH

    Saw your post in the thread, I replied x)

    Saw your post in the thread, I replied x)
    • ZainH
    • Profile post comment
  6. ZainH

    Physics paper 6 2012 + chemistry paper 2 2012 discussions

    Basically you place the test-tube in between the 2 blocks of wood since a test-tube has curved ends you won't be able to measure it accuratley with a ruler. Now that you have 2 straight ends, it's much easier to measure the test-tube's length
  7. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    Haha anytime x)
  8. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    But you got why the answer is that right? RIGHT?!? XD
  9. ZainH

    Paper 6(2) Physics

    All right, so you first measure the diameter of the cylinder. Lets say we get it as 6. Now we know the centre of the cylinder is 3cm from both sides, basically it's radius is 3cm. So you should place one end of the cylinder on 7cm, and the other end should be at 13cm. Since 10-3 = 7cm , and...
  10. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    Sorry, didn't know how to explain that , but your welcome :z I don't think so, if it were related to water pressure then the extension would be less as it ISN'T completley submerged.. Look at your answers for the previous load, before it is submerged you get 3.1cm, after it is submerged you...
  11. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    Er for this question, you can't really explain it over XPC.. Thing is you have to first solve the whole question , which requires drawing lines and measuring angles.. But basically for that part they're asking , if the mirror is moved at an angle of theta (which is 10 degrees, it's given in the...
  12. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    All right so basically there asking, if you use a longer piece of metal with the same mass , would the extension be the same? Obviously not, it would be greater. The next part asks if the density would be the same, and since according to the formula they have provided if E2 increases, so does...
  13. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    Glad to help others, just pray for me ( Especially chemistry LOL xD ) Sure just let me read the question and see if I know the answer x)
  14. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    Anytime, I didn't get it at first either but then Yousif Mukkhtar explained it to me x)
  15. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    That explanation was bad, read my other post.. it's a few posts after that one.
  16. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    0.3 is recorded as Io, but the question says 0.5Io. You know in maths when you have two things next to each other you know there multiplying, like 5a.. If a=3 Then 5x3 = 15. Same thing here, 0.5Io just means 0.5xI0 which is equal to 0.15
  17. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    All right.. one more time. Did you see the question? In part (a) they ask you to record the reading on the ameter, which is 0.3. This reading is "Io", and in the next part of the question it says 0.5Io, which is 0.5 x Io. We already know what Io is so just multiply. 0.5x0.3= 0.15 Now take a...
  18. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    Theory suggest that when the current is 0.5I0, meaning 0.5 x I0 which is equal to 0.15 I believe. This current is already given in the table, it's the last value .. and you had to fill in the resistance for the previous part by simply adding 3.3+6.8= 10.1 Now that you know that 10.1 ohms is...
  19. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    23 degrees usually.
  20. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    Within limits of experimental accuracy means your answer should be within a range of reasonable answers.. It shouldn't be some random number that you just thought of and wrote down, it should be a sort of estimate of the actual answer.
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