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  1. H

    Maths Urgent Help needed!!

    for second 1 i dont know cos i havent formaly studied rads yet.....bt this video can help u.......http://www.youtube.com/watch?v=QmxMPPkZpME
  2. H

    Maths Urgent Help needed!!

    question 1 for 2010.....tan(pi-x)=-ve k REASONING: just remember the unit circle....angle x is acute as mentioned in the question pi rads is equal to 180 deg......so 180-x is an obtuse angle which is located in the second quadrant...and tan value of any angle in second quadrant is -ve...
  3. H

    Question about the AS timetable on june2011

    its tuff i guess
  4. H

    Biology help needed again =)

    http://www.youtube.com/watch?v=LWtXthfG9_M well i think this video will develop a gr8 understanding
  5. H

    Chemistry's Question.

    well for electronegativity chemists hav made a pauling scale according to which nitrogen has the highest en value of 3.98
  6. H

    QUESTION......

    b
  7. H

    Linear momentum

    no its not moving to left...the question doesnt says that......"two trucks seprate and move away from each other"..this statement doesnt implies that the two trucks shud move in the opposite direction......here it implies that they move in the same direction i.e 2wards ryt and such a situation...
  8. H

    Chemistry's Question.

    ya zishi is rite.....go and check AS and a level chemistry by radcliffe...its written in electrochemistry chapter that the more electronegative element is given the -ve oxidation state
  9. H

    XtremePapers Contest 2010 - 2011!

    chek it ---ADMIN EDIT--- Parts of submission accepted. Reason: Repeated attachement. Ticket: 89030.
  10. H

    Chemistry's Question.

    ya agree wid u ,....oxygen is oxidised bt dont knw y ms says it is nt
  11. H

    Linear momentum

    hope the above solution clears the ambiguity......if momentum is towards ryt its +ve and if its 2wards left it shud be -ve
  12. H

    Linear momentum

  13. H

    physics question.....

    well i thought it was so abvious that i do not need to mention bt anywayx T is the tension in string which is a bi-directional force
  14. H

    XtremePapers Contest 2010 - 2011!

    chek one sample ......is thsi ok@ planet master ---ADMIN EDIT--- Submission accepted. Ticket: 85667.
  15. H

    interatomic separation.........????

    how is this thing calculated if density is given
  16. H

    QUESTION......

    http://www.xtremepapers.net/CIE/Interna ... _qp_22.pdf q(2) (ii)
  17. H

    ambiguity....

    in the above question ......markscheme says if 2.69 then uncertainty +-.09.......and this thing makes no sense to me........any 1 cud clear this ambiguity
  18. H

    ambiguity....

  19. H

    help...in physxx

    A car of mass 1900 kg accelerates from rest to a speed of 27ms–1 in 8.1 s. (i) Calculate the average rate at which kinetic energy is supplied to the car during the acceleration.
  20. H

    physics question.....

    hhmmm.....i got it ...
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