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  1. ousamah112

    A2 Physics | Post your doubts here

    but in some questions values are to 3 sf but still the ans is in 2sf
  2. ousamah112

    A2 Physics | Post your doubts here

    how radius is zero at centre???
  3. ousamah112

    A2 Physics | Post your doubts here

    i knw its a silly question answers should be in two or three significant figures??? bcoz some answers in ms are in two sf while some are in three.....!!
  4. ousamah112

    A2 Physics | Post your doubts here

    not in this case. Because we calculated geostationary orbit radius in part (i) and radius is from the centre of earth.
  5. ousamah112

    CIE Grading

    i heard that in phy ,chem n bio the grade you get in p4 is your overall grade... i dont knw if its really true.. but heard it from so many people.
  6. ousamah112

    A2 Physics | Post your doubts here

    that question is about oscillation...o_O
  7. ousamah112

    A2 Physics | Post your doubts here

    http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_43.pdf q3 part b....plz
  8. ousamah112

    A2 Physics | Post your doubts here

    walkum aslam thanks alot.. and the peak value of rectified voltage is less thn the original ac supply???
  9. ousamah112

    When are ur exams finishing

    30th may..
  10. ousamah112

    How it feels in the examination hall?

    the best is when its your last cie exam and invigilator says "time is over please drop your pens down"..:D
  11. ousamah112

    A2 Physics | Post your doubts here

    np...but plz answer my questions tooo :(:P
  12. ousamah112

    A2 Physics | Post your doubts here

    .If we melt ice at 0'C to water at 0C, is work done on the system by te systme or no work??? explain..
  13. ousamah112

    A2 Physics | Post your doubts here

    http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_43.pdf q3 part b....plz
  14. ousamah112

    A2 Physics | Post your doubts here

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w10_qp_43.pdf q3 part b....plz
  15. ousamah112

    A2 Physics | Post your doubts here

    what are the answers??
  16. ousamah112

    A2 Physics | Post your doubts here

    yes..pressure is considered to be constant.
  17. ousamah112

    Physics: Post your doubts here!

    how to find a phase difference???:S
  18. ousamah112

    A2 Physics | Post your doubts here

    work done= pressure x change in volume change in volume= (2.1 x 10^3 x 10^-6)-(1.8 x 10^3 x 10^-6) w.d= 1.o x 10^5 x change in volume.. dont forget to change cm(cube) to metre(cube)!
  19. ousamah112

    Physics and Math P4s?!

    more physics thn m1. But tomorrow i will do only m1.. what abt you??
  20. ousamah112

    A2 Physics | Post your doubts here

    AOA.. That two points mean that when reflected ultrasound is received by the probe the successive compression and rarefaction of ultrasound wave causes the crystal to vibrate. Such that the positive and negative no longer coincides and crystals vibrate, as a result a voltage is produced . which...
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