in most of the data analysis cases, the “reducing factor” n which lowers the number m of dimensional variables to m-n dimensionless groups, exactly equals the number of relevant dimensions (M, L, T). In one case this was not so. Explain in words why this situation happens.
In most data analysis cases, the reducing factor n lowers thr number m of dimensional variables to m-n dimensionless groups, exactly ewuals the number of relevant dimensions (M,L,T), but only in Fluid mechanics this was not happen, there are four relevant dimensions are used (M,L,T, )... = temperature.
The M is replaced by F (Force).
So in fluid mechanics, mainly four dimensions are used (F, L,T, ), because in fluid mechanics, force on the immersed body cause this extra dimension to add.
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