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  1. Y

    Physics, Chemistry and Biology: Post your doubts here!

    This prevents resistance or reduces it. Because the slope makes it move much faster.
  2. Y

    Physics, Chemistry and Biology: Post your doubts here!

    I got a slight question guys. Suppose there is an incident ray in the denser medium (glass) and a refracted ray in the rarer medium (air). And they asked us to find the refractive index in air. Refractive index= sin i (air)/sin r (glass) I am confused, for "sin i" the angle of incidence here...
  3. Y

    Physics, Chemistry and Biology: Post your doubts here!

    Here: http://www.xtremepapers.com/community/threads/physics-guide.14933/
  4. Y

    Paper 3 physics !! get help here :)

    Here: http://www.xtremepapers.com/community/threads/physics-guide.14933/
  5. Y

    Chemistry ATP variant 61

    Yeah that is alright. Just as long as you get above 50.
  6. Y

    Chemistry Paper 61

    Temperature rise will increase because copper is a good conductor of heat.
  7. Y

    Chemistry Paper 61

    I wrote boiling lol.
  8. Y

    Chemistry Paper 61

    Yeah the answer is displacement/precipitation/ exothermic.
  9. Y

    If you have any question on chem p6 im ready you guys. Don't Worry!!

    You can say it is a hydrated salt. Because condensation occured. Or you can say it is an acidic gas, because of the PH went red.
  10. Y

    Physics Guide

    And also the dangers of electricity and the basics.
  11. Y

    Physics Guide

    Only the laws for electricity. But they are all written in the formula page.
  12. Y

    If you have any question on chem p6 im ready you guys. Don't Worry!!

    Guys for questions like: "Why was the total volume kept constant?" Can we just say to have a far test?
  13. Y

    If you have any question on chem p6 im ready you guys. Don't Worry!!

    Oh okay, that is why we say the gas should be collected downwards. It means the gas jar should be placed inverted and then the gas can be collected downwards by displacing the air upwards. Thanks
  14. Y

    If you have any question on chem p6 im ready you guys. Don't Worry!!

    In MJ 10, Q1: http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_s10_qp_61.pdf Can someone explain to me why the mistakes is that gas should be collected downwards
  15. Y

    Physics Guide

    Guys it is fully updated now. The file now covers almost all the topics. The CRO, Logic gates and electronic components are there too.
  16. Y

    Physics, Chemistry and Biology: Post your doubts here!

    Yeah this is a test for sulphates.
  17. Y

    Physics, Chemistry and Biology: Post your doubts here!

    I meant dilute sulfuric acid. Sorry lol.
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