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Ruchi. Group Title

how to find dimension of any physical quantity?

  • one year ago
  • one year ago

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  1. Ruchi. Group Title
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    @mukushla @mathslover @shruti @SUROJ @ashna @Preetha @PaxPolaris

    • one year ago
  2. SUROJ Group Title
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    I guess there are 3 dimension lenght, bredth and height

    • one year ago
  3. SUROJ Group Title
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    and if you consider forth time dimension

    • one year ago
  4. ashna Group Title
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    In the SI system, the dimension of all physical quantities is a combination of the 7 fundamental quantities such as ..

    • one year ago
  5. ashna Group Title
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    Name Unit Symbol Distance Meter L Mass Kilogram M Time Second T Current Ampere I Light Candela J Heat Kelvin K Concentration Mole N

    • one year ago
  6. mathslover Group Title
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    Ok so there are two types of units: 1) Basic (given above by ashna) 2) Derived for example: speed = distance /time unit of distance = metre and unit of time = second hence unit of speed = m/s

    • one year ago
  7. mathslover Group Title
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    reprsentation : [SPEED] = \(\large{[LT^{-1}]}\)

    • one year ago
  8. mathslover Group Title
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    is this what u wanted @Ruchi. ?

    • one year ago
  9. ashna Group Title
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    @Ruchi. candela sybol is cd sorry !

    • one year ago
  10. mathslover Group Title
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    right J is the symbol of Joule ( unit of energy )

    • one year ago
  11. ashna Group Title
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    Any physical quantity Q can then be dimensionally expressed as [Q] = L^1 M^2 T^3

    • one year ago
  12. ashna Group Title
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    THE ONE WHICH SEEMS TO BE POWERS IN MATH IS CALLED DIMENSIONS IN PHYSICS

    • one year ago
  13. ashna Group Title
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    P.S though not every where

    • one year ago
  14. ashna Group Title
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    do you have any books to refer to ?

    • one year ago
  15. Ruchi. Group Title
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    @mathslover i don't know how to find dimension of any physical quantity.

    • one year ago
  16. mathslover Group Title
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    Of any physical quantity :? you mean like find the dimensions of velocity , speed etc.?

    • one year ago
  17. ashna Group Title
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    Area = length * length = L^2 UNDERSTOOD ? @Ruchi.

    • one year ago
  18. Ruchi. Group Title
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    any i mean plz tell me that hw can we find dimension of any quantity.

    • one year ago
  19. Ruchi. Group Title
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    okay

    • one year ago
  20. ashna Group Title
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    Volume = Length * area = Length * Length * Length = L^3

    • one year ago
  21. ashna Group Title
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    understood that ?

    • one year ago
  22. Ruchi. Group Title
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    yes

    • one year ago
  23. ashna Group Title
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    do you intent someone else to explain , or am i to continue ?

    • one year ago
  24. Ruchi. Group Title
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    plz continue

    • one year ago
  25. ashna Group Title
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    okay

    • one year ago
  26. ashna Group Title
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    Angle = Arc / Radius = no dimensions

    • one year ago
  27. ashna Group Title
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    you know why ?

    • one year ago
  28. Ruchi. Group Title
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    why?

    • one year ago
  29. ashna Group Title
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    arc = L radius = L so both gets cancelled

    • one year ago
  30. ashna Group Title
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    understood ?

    • one year ago
  31. Ruchi. Group Title
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    ok

    • one year ago
  32. ashna Group Title
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    Density = Mass / Volume = M / L^3 = M^1 L^-3

    • one year ago
  33. ashna Group Title
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    |dw:1344583056345:dw|

    • one year ago
  34. ashna Group Title
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    OKAY ?

    • one year ago
  35. Ruchi. Group Title
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    ok

    • one year ago
  36. ashna Group Title
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    velocity = displacemnt / time = LT^-1

    • one year ago
  37. ashna Group Title
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    SINCE DISPLACEMENT = DISTANCE = L

    • one year ago
  38. Ruchi. Group Title
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    how? i hav nt under stood it

    • one year ago
  39. ashna Group Title
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    okay , displacement = distance = L (length) divided by time (t)

    • one year ago
  40. ashna Group Title
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    |dw:1344583266349:dw|

    • one year ago
  41. ashna Group Title
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    now okay ?

    • one year ago
  42. ashna Group Title
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    you are free to say if you didn't understand it still :)

    • one year ago
  43. Ruchi. Group Title
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    can i ask u 1 thing

    • one year ago
  44. ashna Group Title
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    sure :)

    • one year ago
  45. Ruchi. Group Title
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    okay why u have taken distance=L

    • one year ago
  46. ashna Group Title
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    distance is nothing but length .

    • one year ago
  47. ashna Group Title
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    distance travelled , is the length travelled understood ?

    • one year ago
  48. Ruchi. Group Title
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    yes

    • one year ago
  49. ashna Group Title
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    where displacement is just the other word for distance , displacement is the shortest dist travelled and distance is the longest possible distance = L (length)

    • one year ago
  50. ashna Group Title
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    can i proceed ?

    • one year ago
  51. Ruchi. Group Title
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    okay above u hav posted a table i table i hav find out that table i many bookbt i don't know how and where i hav to use that table.:"(

    • one year ago
  52. ashna Group Title
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    Name Unit Symbol Distance Meter L Mass Kilogram M Time Second T Current Ampere I Light Candela cd Heat Kelvin K Concentration Mole mol

    • one year ago
  53. ashna Group Title
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    this is nothing , i'll explain , dont worry yourself now :)

    • one year ago
  54. Ruchi. Group Title
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    okay

    • one year ago
  55. ashna Group Title
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    now i said distance = L , that is the first one , okay ? and its unit is meter .

    • one year ago
  56. ashna Group Title
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    anything you want to know ?

    • one year ago
  57. ashna Group Title
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    @Ruchi. you there ?

    • one year ago
  58. Joseph91 Group Title
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    Dimension of a body is determined by the co-ordinate axis attach to it. There are 1D, 2D, 3D and 4D(It includes Time).The existence of 4D is beyond our imagination.

    • one year ago
  59. Ruchi. Group Title
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    @ashna

    • one year ago
  60. Ruchi. Group Title
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    @ashna hav studied chapter work energy &power

    • one year ago
  61. ashna Group Title
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    hey ruchi .. tell me a time when you can stay on in open study for like hours .. not mins , i'll help you with dimensions then ;)

    • one year ago
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