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  1. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    Thank you! :) Inshallah we'll both get A* Molecules which have higher kinetic energy have a higher chance to break their bonds and escape (evaporation). At 85*C more energetic molecules exist and thus more water has evaporated/more molecules have broken their bonds which is why the level is...
  2. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    v=u+at? u= initial speed, acceleration = a=0.5 t=1.2 v=0 + 0.5(1.2) =0.6m/s ii) Distance can use average speed (s= [v+u]/2 * t] which gives distance = 0.3*1.2=0.36 or s=ut+1/2at^2 =0+(0.5)(0.5)(1.2)^2=0.25*1.44=0.36
  3. ThatReallyReallyWeirdDude

    This is WAR physics! It's me and my brain vs. you and your questions, and I'm not planning on...

    This is WAR physics! It's me and my brain vs. you and your questions, and I'm not planning on losing!
  4. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    I have to go now guys If you have any questions you can inbox them and I'll answer in the morning, inshallah! Good luck, I'll make some Du'a for you all before I sleep ;)
  5. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    It's tomorrow in approximately.... 15 hours 40 minutes ;)
  6. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    Thank you so much, I just noticed that I didn't revise sound at all D: But should be okay.
  7. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    The prep is great, and I have one thing to say to physics *holds blade up * THIS IS SPARTA! WAAAAAAR! Sorry I really can't remember any of the hard questions :| Do 2010/2011, they had the tricky ones.
  8. ThatReallyReallyWeirdDude

    Physics Easy or Hard?

    I'm ready :) We've all studied our hardest (Mostly) So the rest is on Allah (s.w.t.) make lots of Dua and inshallah He'll make the exam easier for us.
  9. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    Great thanks :) I'm using photoshop actually ;o
  10. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    You mean 3b I assume since 3a has no subquestions q9ai)
  11. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    This actually depends on the energy of the alpha/beta particle, but we don't need to know that All we need to know is: a) Alpha particles get stopped by 5cm of air or a paper b) Beta particles get stopped by few mm of aluminium c) Gamma rays only stopped by i think at least 5cm of lead. 2a)...
  12. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    Gradient = y-step/x-step The y-step is the difference in y-co-ordinates in two points and the x-step is the difference in those co-ordinates of those points. For example, if we had a line with points (2,3) and (8, 12) The y-step is 12-3=9 The x-step is 8-2=6 So the gradient is 9/6 = 1.5 So for...
  13. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    You're both welcome :)
  14. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    I hope I helped!
  15. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    it says the ray is ALMOST parallel to AE - that means it has an angle of incidence of ALMOST 90. Mark scheme says anything between 88-90 is acceptable, so I'd write 89. The critical angle occurs when the ray going from more optically dense medium to less optically dense medium is refracted with...
  16. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    Sensitivity: To increase, decrease diameter of capillary tube or use a liquid with higher expansivity. Range: Opposite to sensitivity Increase diameter of capillary tube or use liquid with lower expansivity Linearity: If a thermometer isn't linear then all you can do is replace the liquid with a...
  17. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    Actually it says on the front of the exam, 3 significant figures and 2 decimal places for angles.
  18. ThatReallyReallyWeirdDude

    Physics !!

    Saeed that's very cruel of you What IGCSE O/L said is true. Cheating is wrong. These exams are seriously easy enough without people cheating to top it off It's sad, pathetic and I really really hope a mod either closes this thread or warns those who want to cheat.
  19. ThatReallyReallyWeirdDude

    Thanks a lot ;)

    Thanks a lot ;)
  20. ThatReallyReallyWeirdDude

    Physics, Chemistry and Biology: Post your doubts here!

    PEAK TO PEAK HEIGHT IS THE HEIGHT DIFFERENCE BETWEEN CRESTS AND TROUGHS! SO IT'S TWO TIMES THE ALTITUDE! *facepalm*
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