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how to find dimension of any physical quantity?

Physics
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I guess there are 3 dimension lenght, bredth and height
and if you consider forth time dimension

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Other answers:

In the SI system, the dimension of all physical quantities is a combination of the 7 fundamental quantities such as ..
Name Unit Symbol Distance Meter L Mass Kilogram M Time Second T Current Ampere I Light Candela J Heat Kelvin K Concentration Mole N
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
reprsentation : [SPEED] = \(\large{[LT^{-1}]}\)
is this what u wanted @Ruchi. ?
@Ruchi. candela sybol is cd sorry !
right J is the symbol of Joule ( unit of energy )
Any physical quantity Q can then be dimensionally expressed as [Q] = L^1 M^2 T^3
THE ONE WHICH SEEMS TO BE POWERS IN MATH IS CALLED DIMENSIONS IN PHYSICS
P.S though not every where
do you have any books to refer to ?
@mathslover i don't know how to find dimension of any physical quantity.
Of any physical quantity :? you mean like find the dimensions of velocity , speed etc.?
Area = length * length = L^2 UNDERSTOOD ? @Ruchi.
any i mean plz tell me that hw can we find dimension of any quantity.
okay
Volume = Length * area = Length * Length * Length = L^3
understood that ?
yes
do you intent someone else to explain , or am i to continue ?
plz continue
okay
Angle = Arc / Radius = no dimensions
you know why ?
why?
arc = L radius = L so both gets cancelled
understood ?
ok
Density = Mass / Volume = M / L^3 = M^1 L^-3
|dw:1344583056345:dw|
OKAY ?
ok
velocity = displacemnt / time = LT^-1
SINCE DISPLACEMENT = DISTANCE = L
how? i hav nt under stood it
okay , displacement = distance = L (length) divided by time (t)
|dw:1344583266349:dw|
now okay ?
you are free to say if you didn't understand it still :)
can i ask u 1 thing
sure :)
okay why u have taken distance=L
distance is nothing but length .
distance travelled , is the length travelled understood ?
yes
where displacement is just the other word for distance , displacement is the shortest dist travelled and distance is the longest possible distance = L (length)
can i proceed ?
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.:"(
Name Unit Symbol Distance Meter L Mass Kilogram M Time Second T Current Ampere I Light Candela cd Heat Kelvin K Concentration Mole mol
this is nothing , i'll explain , dont worry yourself now :)
okay
now i said distance = L , that is the first one , okay ? and its unit is meter .
anything you want to know ?
@Ruchi. you there ?
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.
@ashna hav studied chapter work energy &power
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 ;)

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