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  1. periyasamy

    Hi princesszahra :) can you please send me the alevel papers solved(P5) for chemistry, biology &...

    Hi princesszahra :) can you please send me the alevel papers solved(P5) for chemistry, biology & physics to my email [email protected] u a lot.
  2. periyasamy

    Chemistry: Post your doubts here!

    Guys last question.Pls help.I really dont understand For aspartic acid ,why isnt there a negative in coo ?Thank u a lot.
  3. periyasamy

    Chemistry: Post your doubts here!

    Another question here guys.Pls help.Thanks a lot.
  4. periyasamy

    Chemistry: Post your doubts here!

    Guys have a question here. In the picture i post below,I dont get it all three answers given.Can anyone explain it to me.Thanks.
  5. periyasamy

    Physics: Post your doubts here!

    Hai guys,need a help here.Thanks in advance. http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20%289702%29/9702_w10_qp_43.pdf Question 3a(part1).The answer is 8cm.
  6. periyasamy

    Mathematics: Post your doubts here!

    Thank u boss!!!:):):):):):):):):):):):):):):):):)
  7. periyasamy

    Mathematics: Post your doubts here!

    Hai guys ,seriously need a help here.Thanks a lot...
  8. periyasamy

    Chemistry: Post your doubts here!

    Guys got a question here.Anyone can help me explain a bit about question 7 http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20%289701%29/9701_s08_qp_4.pdf Thank u a lot
  9. periyasamy

    Mathematics: Post your doubts here!

    Guys!!Please help..
  10. periyasamy

    Mathematics: Post your doubts here!

    Hai guys,anyone can help me with this http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_s05_qp_3.pdf question 4 part 1 Thanks a lot...
  11. periyasamy

    Physics: Post your doubts here!

    Thank u breaking bad....Nvr mind for the ice part,i got ady.Thanks boss!!!
  12. periyasamy

    Physics: Post your doubts here!

    Another question here guys, i have a question that i got the answers from this forum long time ago.But i dont get 1 of the part in the working. why in the 3 b part 2.there is a value of 8676 joule,isnt it suppose to be 8700,the answer for the 1st part. Even the answer show the same thing.Help...
  13. periyasamy

    Physics: Post your doubts here!

    Guys ,very confused with the internal energy part.Just want to ask something to clear it up. 1)1st of all when work is done on system is it +ve or -ve? 2)example ice > water -------->steam Guys,this conversion of ice to water to steam ?Is it all work done on system or by system. Thanks...
  14. periyasamy

    Physics: Post your doubts here!

    Thanks a lot..........
  15. periyasamy

    Physics: Post your doubts here!

    Hai guys.Have a question here.Can anyone help me solve the question 3c(part 2) and 4d (part 1)?Thanks a lot in advance. http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s04_qp_4.pdf http://papers.xtremepapers.com/CIE/Cambridge International A and AS...
  16. periyasamy

    Mathematics: Post your doubts here!

    Guys anyone can help me with the part 2 of this question why in the answer is stated that 0.02t-ln95.Dont get this part.Thank u.
  17. periyasamy

    Mathematics: Post your doubts here!

    Thanks a lot man.:)
  18. periyasamy

    Mathematics: Post your doubts here!

    Guys need help here for first and second part.Thank u a lot. it is from http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w03_qp_3.pdf and the ms is...
  19. periyasamy

    Physics: Post your doubts here!

    Sorry guys i just google searched n saw this picture but i dont reallly understand why it is saif that the force acting for moon is opposite for the force acting on earth.Anybody can help me.Thanks.
  20. periyasamy

    Physics: Post your doubts here!

    Hi guys.Can anyone solve my problem here.For the picture i post below,did i draw it rightly in terms that there is only one force acting between moon n earth n that is ONLY an attractive force
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