Physics

Problem

A laboratory report lists the density of a cooking oil sample as

0.92\,\text{kg}\text{/}\text{cm}^{3}

. Which statement best evaluates the unit used for this density value? a) The unit is acceptable but the numeric value should be rewritten as

920\,\text{kg}\,/\,\text{m}^{3}

to match the converted volume unit. b) The unit standard is satisfied because

\text{cm}^{3}

is an SI-derived volume, so

\text{kg}/\text{cm}^{3}

is already fully SI. c) The unit mixes a base-SI mass unit with a non-SI volume unit, so the volume should be converted to

\text{m}^{3}

to express the density in standard SI form. d) The proper unit for a liquid of density less than 1 should be

\text{g}/\text{cm}^{3}

, not

\text{kg}/\text{cm}^{3}