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  1. K

    Helpppp Mechanics A Level 9709 s12 41

    Could anyone explain for me part (ii)? Even with the mark scheme I don't get it :(
  2. K

    Helpppp Mechanics A Level 9709 w11 42

    Got it... 8000N is the weight of the particle in the inclined slope (mg*sin alpha = 16 000 x 10 x 1/20 = 8 000N)
  3. K

    Helpppp Mechanics A Level 9709 w11 42

    Part (iii) For BC: 16 000a = 7 200 - 1 240 - 8 000. <= What formula is this?? 16 000 is the mass, 7 200 is driving force of BD, 1 240 is resistance of BC, and what is 8 000? I don't understand anything =o=
  4. K

    Helpppp Mechanics A Level 9709 s11 43

    Wait, never mind, I got it. The height is 500 x sin alpha.
  5. K

    Helpppp Mechanics A Level 9709 s11 43

    A lorry of mass 15 000 kg climbs a hill of length 500 m at a constant speed. The hill is inclined at 2.5◦ to the horizontal. The resistance to the lorry’s motion is constant and equal to 800 N. (i) Find the work done by the lorry’s driving force. Correct me if I'm wrong, but isn't PE is mgh...
  6. K

    Help Mechanics 1

    How do you calculate the angle ?
  7. K

    Example Candidate Responses for Business studies 9707andEconomics 9708

    Thanks!
  8. K

    Example Candidate Response for Chemistry 9701 and Physics 9702

    Thanks a lot!! :)
  9. K

    help needed in business studies A LEVEL plzzzzzz

    Well there are summaries for every chapter in the student CD that goes along with the book. But I don't think you'd do well just by knowing what each topic contains...
  10. K

    XtremePapers Contest 2012-2013 Winners (Finally!)

    Congrats!
  11. K

    Study group or something?

    I'm having a hard time cramming 4 tests in A and AS Level: A Business, A Mathematics, AS English and AS Chemistry. Well, so, it'd be nice to have someone study with me, especially the ones are taking the same exams. Anyone interested ? TL;DR My school is so horrible this is the second year...
  12. K

    help needed in business studies A LEVEL plzzzzzz

    I'd wish you luck then :DD I have the CD of the answers for every case study, it's a teacher material... hopefully you're having the same book like me. if you want I'll upload it? https://drive.google.com/folderview?id=0B6sdatQKqHkZTkpsa2plQkZqajA&usp=sharing
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