Question

Name the S.I unit of density. How is it related to g $cm-3$?

Answer 1

S.I. unit of density is kg $m^{-3}$ . In C.G.S. system unit of mass is g and unit of volume is $c{m}^3$, so a CGS unit of density is g $c{m}^3$ (gram per cubic centimetre).
The relationship between S.I. and C.G.S. units.

1 kg $m^{-3}$ = $\frac{1kg}{1m^{-3}}$ = $\frac{1000}{100c{m}^3}$

= = $\frac{1}{1000gc{m}^3}$

thus,

1 kg $m^{-3}$ = ${10}^{-3}gc{m}^{-3}$