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  1. Hamzeh S

    Maths CIE 2013 oct/november Paper 21 help?!

    Guys if in the hemisphere question i got the total volume right but forgot to divide by 2 thus got a wrong answer how many marks will i lose ? and in the ratio of airplane model to real airplane i converted m3 to cm3 by multiplying by a 1000 instead of 1 million so i got a wrong answer how many...
  2. Hamzeh S

    maths p21!!

    Guys if in the hemisphere question i got the total volume right but forgot to divide by 2 thus got a wrong answer how many marks will i lose ? and in the ratio of airplane model to real airplane i converted m3 to cm3 by multiplying by a 1000 instead of 1 million so i got a wrong answer how many...
  3. Hamzeh S

    maths p21!!

    its 4/3*PI*R^3 lol
  4. Hamzeh S

    Maths CIE 2013 oct/november Paper 21 help?!

    What did u guys get for the last probabilty question about getting 2 red cars?
  5. Hamzeh S

    Maths CIE 2013 oct/november Paper 21 help?!

    A* boundary prediction if paper 41 was not so hard like average? is it going to be 170-175 or 175-180 ?
  6. Hamzeh S

    maths p21!!

    Do u think the grade boundary will be really high like 188 for A* like november 2011 variant 2 ?
  7. Hamzeh S

    Maths CIE 2013 oct/november Paper 21 help?!

    the last probability question about 2 cars was it 20/50 * 19/49 or smthn like that?
  8. Hamzeh S

    Mathematics 0580 paper 22

    Are you ready guys ? when is ur exam ?
  9. Hamzeh S

    Mathematics: Post your doubts here!

    How many significant figures and decimal places should i write my answer to for example 4250.52 should i just write 4250? and what about 6245994.592 should i just write 624600?? what about decimal places 0.624523 should i just write 0.625?
  10. Hamzeh S

    Mathematics: Post your doubts here!

    why is angle DOA 34 ? i know angle at cente is double the one at circumfrence but i thought it only applied to DOC and DBC since they are both formed from the two point D and C
  11. Hamzeh S

    Mathematics: Post your doubts here!

    i was just wondering why 22 not 39 ? i know 180-124-34 but isnt there a theorem that says angles subtended by same arc are equal ?
  12. Hamzeh S

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20IGCSE/Mathematics%20(0580)/0580_w12_qp_42.pdf Question 4 b part IV isnt this angle supposed to be 39 since it and the given angle 39 subtended by the same arc in the same segment of the circle?
  13. Hamzeh S

    0620 Chemistry Paper 6 HELP!!

    just by using the graph and finding the co-responding value
  14. Hamzeh S

    IGCSE chemistry paper 6

    guys in the straight line graph it didnt pass through the first point but it was so close and it didnt pass at another point which was far from it i got the mass when 0.7 g used is around 0.455 ? also why did we heat crucible 3 times ? and what was the ph and smell and color of the carboxylic...
  15. Hamzeh S

    Mathematics: Post your doubts here!

    how did u know they are similiar?
  16. Hamzeh S

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20IGCSE/Mathematics%20(0580)/0580_w11_qp_41.pdf Question 4 A i dont really get it i managed to solve all parts except A :/
  17. Hamzeh S

    Physics Unit 2. How was it ???!!!

    usually nope
  18. Hamzeh S

    Physics Unit 2. How was it ???!!!

    ouch
  19. Hamzeh S

    Physics Unit 2. How was it ???!!!

    lol if they were parallel the current in the smaller lamp would be more than x100 the main bulb because it had a resistance of 12.5 and that one had 1322.5 or something :p its series
  20. Hamzeh S

    Physics Unit 2. How was it ???!!!

    exactly what i said although (2) i phrashed it in a different matter some people disagreed about (3) but thats what i wrote
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