define dimenssion .obtain dimenssion of power,pressure ,work and density
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the powers to which physical quantities are raised to show how much of which quantity is used is called a dimension.
(a)power=work/time
= (force x displacement)/time
= (mass x acceleration) x displacement/time
= [M] [LT^-2] [L] / [T]
= [ML^2 T^-2] / [T]
=[ML^2 T^-3] , this is the dimension of Power.
(b) pressure=force/ area
= [MLT^-2] / [L^2]
= [ML^-1 T^-2], this is dimension of pressure.
(c) work= force x displacement
=[MLT^-2] [L]
=[ML^2 T^-2] , this is dimension of work
(d) density= mass/volume
=[M] / [L^3]
=[ML^-3] , this is dimension of density.
hope it helps u and clears your doubt...
----PLEASE MARK MY ANSWER AS BRAINLIESTT----
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