dimensional formula
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The dimensional formula of a physical quantity is an expression that tells us how and which of the fundamental quantities enter into the unit of the quantity. In mechanics the dimensional formula is written in terms of the dimensions of mass, length and time (M.L. and T
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The expression showing the powers to which the fundamental units are to be raised to obtain one unit of a derived quantity is called the dimensional formula of that quantity.
If Q is the unit of a derived quantity represented by Q = MaLbTc, then MaLbTc is called dimensional formula and the exponents a, b and, c are called the dimensions.
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