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  1. i_try9621

    As physics p1 MCQS YEARLY ONLY.

    Resistance of the copper wire = (ρL)/A Here Length of the copper wire = N x circumference of iron core = N x 2πR= N x 2π x D/2 Also A = π r^2 = π x (d/2)^2 R = 4NρD/d^2. Ans is A
  2. i_try9621

    As physics p1 MCQS YEARLY ONLY.

    Power = Force x velocity On the horizontal road 30000 = F x 25 F = 1200N On the slope Force from the car's engine = 1200N backward force = mg sin(theta) = 14000sin(2) To go up the slope the minimum forward force = 1200 + 14000sin(2) to overcome the backward force Therefore P = (1200...
  3. i_try9621

    As physics p1 MCQS YEARLY ONLY.

    For question 13 the weight of the bus is equal to the two upward forces so W = 25000N Take distance between 16000N and the weight to be "x" m and the distance between 9000N and the weight to be (1.5 - x) m Use your idea of moment to find x. then add x and 0.6m to get the answer. For question...
  4. i_try9621

    Mathematics: Post your doubts here!

    For a body at rest or in equilibrium on a rough sutface, Is F less than or equal to μR or is it F = μR?
  5. i_try9621

    Physics: Post your doubts here!

    Should an oscilloscope be connected in parallel in a circuit or in series?
  6. i_try9621

    Physics: Post your doubts here!

    They are asking for the minimum bits needed to encode the sample (to convert from analogue to digital). You can see the maximum voltage here is 15mv which requires at least 4 bits, above 15mv such as 16mv, you will need at least 5 bits. So the minimum bits needed here is 4 Ans is 4
  7. i_try9621

    Physics: Post your doubts here!

  8. i_try9621

    Physics: Post your doubts here!

    Two ways of doing it log(20.5 + 0.5)-log(20.5) = 0.01 OR log(20.5)-log(19) = 0.01 both ways can be done
  9. i_try9621

    Physics: Post your doubts here!

    but why?
  10. i_try9621

    Physics: Post your doubts here!

    Someone please help me with 6) iv). It's from 41/O/N/11
  11. i_try9621

    Physics: Post your doubts here!

    better if you use 5.36V
  12. i_try9621

    Franch teachers in KSA

    Wanted to learn french. Is there any teacher who would teach french in Khobar or Dammam. Pm me of you know anyone
  13. i_try9621

    Physics: Post your doubts here!

    Hey in P5 Q1), Is it necessary to fill the out the whole page ?
  14. i_try9621

    Mathematics: Post your doubts here!

    On cell so can't show the working, but if you know how to write it in polar form then you can easily find the answer
  15. i_try9621

    Mathematics: Post your doubts here!

    quick question. If a body is about to topple (without sliding), what is the relationship b/w F and μR ? Should it be F<μR or opposite Also if the body is about to slide (without toppling) should it be F<μR or something else?
  16. i_try9621

    Mathematics: Post your doubts here!

    Need help with 4) ii) b). It's from 9709/32/F/M/16. why is the answer only x > -0.5?
  17. i_try9621

    Mathematics: Post your doubts here!

    Hoghest power of t here is 2 so the graph shoulf look like a parabola. In the equation it's '- t^2' so it's negative
  18. i_try9621

    Mathematics: Post your doubts here!

    Can't draw it cuz I am on mobile but I can give coordinates For the man (0,1.8) to (100,2.2) straight line For the woman (0,0) to (100,3) gradient gradually decreasing (a curve)
  19. i_try9621

    Physics: Post your doubts here!

    In 1m^3 of atmospheric air 9.52 x 10^7 atoms of Radon-222 are present
  20. i_try9621

    Physics: Post your doubts here!

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