A Physical Count of Supplies on Hand Ratio of two densities Specific gravity Common symbols SG SI unit of measurement Unitless Derivations fromother quantities South G t r u e = ρ s a m p 50 e ρ H 2 O {\displaystyle SG_{\mathrm {true} }={\frac {\rho _{\mathrm {sample} }}{\rho _{\mathrm …
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