9702 O/N 2021 Paper 21

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  • Опубликовано: 24 окт 2024

Комментарии • 22

  • @muhammednoor5269
    @muhammednoor5269 Год назад +5

    answer for Q4 (b)(iv) the Dooplers effect is around 3 o'clock, if you do 9/4 you get 2.25T which if you mark on the graph gives frequency thats on the equilibrium line, meaning that its around 3 or 9 oclock, but as we kow the highest frequency means the source was at 12 o'clock, we make our Y mark at 3 o'clock.

    • @sasha13050
      @sasha13050 Год назад

      hi can you explain me one thing? isn’t the highest frequency heard by the observer when the vehicle is closest to the observer? so the closest position is 3 oclock, so why have we put the X mark on 12 oclock?

    • @timothy8842
      @timothy8842 Год назад

      @@sasha13050 look at the arrow, it shows the DIRECTION of the car.

    • @sasha13050
      @sasha13050 Год назад

      @@timothy8842ohhhh okay i get it now. Thankyou

  • @aakrishpoudel2473
    @aakrishpoudel2473 Год назад

    sir in question b) iv) how did it the Y became in bottom of the circle ? can you explain as 9t/4 gives 2.25 t which has frequency of 1.2

  • @auditirahman3857
    @auditirahman3857 Год назад

    sir, in question 1, can't we give the answers for percentage uncertainties to two significant figures?

  • @coolgamer9958
    @coolgamer9958 Год назад +3

    sir too manay burgers in your class

  • @hamnairfan8743
    @hamnairfan8743 Год назад

    in q2 b(ii) part can we just take the area of two triangles and add them?
    Please reply

  • @administracaogestao2664
    @administracaogestao2664 2 года назад

    On number 3b part 3 why did you half (1/2)

  • @fami5123
    @fami5123 2 года назад

    at 16:24, why is 10 to the minus 3?

    • @CentaurusAcademy
      @CentaurusAcademy  2 года назад

      because time is in milli seconds we need to convert it to secs

  • @trytricking5297
    @trytricking5297 Год назад

    sir which school do you teach?

  • @kurosakiichigo1612
    @kurosakiichigo1612 Год назад +4

    Chad

  • @araf3301
    @araf3301 Год назад

    Goat

  • @insomniacdemon
    @insomniacdemon 5 месяцев назад

    😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂 38:11

  • @danyriz3201
    @danyriz3201 Год назад

    38:12 ahahahaha