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  1. janasalem

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s09_qp_2.pdf variant 2 question 2 b ?
  2. janasalem

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s09_qp_2.pdf variant 2 question 2 b
  3. janasalem

    Physics: Post your doubts here!

    yes A is the answer but how ?
  4. janasalem

    Physics: Post your doubts here!

    On a particular railway, a train driver applies the brake of the train at a yellow signal, a distance of 1.0km from a red signal, where it stops. The maximum deceleration of the train is 0.2ms–2 . Assuming uniform deceleration, what is the maximum safe speed of the train at the yellow signal...
  5. janasalem

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w04_qp_2.pdf question 3 is the maximum height the top of the loop or the top of h in the diagram ?
  6. janasalem

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s12_qp_23.pdf question 1 c(ii) can someone draw this and send a photo and how to find the magnitudes from the vector triangle?
  7. janasalem

    Physics: Post your doubts here!

    can someone please explain this ? A student makes measurements from which she calculates the speed of sound as 327.66 m s–1. She estimates that her result is accurate to ±3 %. Which of the following gives her result expressed to the appropriate number of significant figures? A 327.7 m s–1 B...
  8. janasalem

    Mathematics: Post your doubts here!

    October november 2011 paper 13 9709 can someone explain this ? Functions f and g are defined by f : x → 2x + 3 for x ≤ 0, g : x → x^2 − 6x for x ≤ 3. Find the set of values of x which satisfy gf(x) ≤ 16.
  9. janasalem

    CHEMICAL ENGINEERING

    what's the best career for a person who like chemistry physics and math ?
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