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  1. E

    Physics, Chemistry and Biology: Post your doubts here!

    By measuring the angle with a protractor....thats what I would do....
  2. E

    Physics, Chemistry and Biology: Post your doubts here!

    We can just take the finish and subtract the start point from it....u dont need 2 rules...
  3. E

    Physics, Chemistry and Biology: Post your doubts here!

    Yup! Perfecto :)
  4. E

    Physics, Chemistry and Biology: Post your doubts here!

    The bottom line is the meter rule :) Look at the diagram posted by Maz its exactly what I was saying :D
  5. E

    Physics, Chemistry and Biology: Post your doubts here!

    Just take the lines from the lenses and stuff as straight lines.....I hope Im doin this right XD
  6. E

    Physics, Chemistry and Biology: Post your doubts here!

    I dont really think thats right....its just like a convex lens and then like the screen draw them like as spaced out as possible....and make sure that the distance between is the same.....I didnt draw coz I cant really sry... :(
  7. E

    Physics, Chemistry and Biology: Post your doubts here!

    Could someone explain how ammonia, iron, copper and other ores are purified etc for igcse? Thx
  8. E

    Physics, Chemistry and Biology: Post your doubts here!

    That is quite a tricky question.... :P
  9. E

    Physics, Chemistry and Biology: Post your doubts here!

    Does anyone have some notes or like help sheets for physics paper 6? Tips, advice? Any resources? Thanks :)
  10. E

    Physics, Chemistry and Biology: Post your doubts here!

    What was the question again?
  11. E

    Physics, Chemistry and Biology: Post your doubts here!

    Isnt 0.3 recorded as Io so if its 0.5 then 0.5 is Io and not 0.5* I0?? I think Im just being an idiot but Im sorta confused....
  12. E

    Paper 6(2) Physics

    ummm then ask? I can try to help :)
  13. E

    Physics, Chemistry and Biology: Post your doubts here!

  14. E

    Physics, Chemistry and Biology: Post your doubts here!

    What do u mean 0.5Io means 0.5 * Io? What is Io? I dont get the question :( plz help....
  15. E

    Physics, Chemistry and Biology: Post your doubts here!

    Ok draw the line with E1 below E and touching G and then above F....the angle between EGE1 should be 10degrees and FGF1 should also be 10 degrees.... Hope this helps with the further questions :D
  16. E

    Physics, Chemistry and Biology: Post your doubts here!

    Get the center of the cylinder, then extend the line onto the ruler, then remove the cylinder and read the mark....
  17. E

    Physics, Chemistry and Biology: Post your doubts here!

    Oh sry I durped.... Fe2O3 + 3CO ==> 2Fe + 3CO2 this is the right answer :P
  18. E

    Chemistry Paper 61

    This is 2012 May/June?! How come u have these papers when I am like doing the exam on june 11 and june 13??
  19. E

    Chemistry Paper 61

    What if I skipped out step 6 and said just look at it and the one with most rust is the least effective? And what if I said put the nails in a test tube and add corrosion inhibitor to the test tube....how many marks would I get out of 7? Thx
  20. E

    Physics, Chemistry and Biology: Post your doubts here!

    Fe2O3 + CO ==> 2Fe + CO2 thats as simple as adding a 2 infront of Fe
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