Question

Density of oil is 0.8 g $cm^{-3}$ in C.G.S. unit. Find its value in S.I. units.

Answer 1

Answer:

Density = 0.8 g/cm³

Now in SI units Length is measured in Metres .

Weight is measured in Kilo grams &

Time in Seconds. So it is sometimes called ad MKS- System.

Here 0.8- g= 0.8 x 10^-3 Kg

1- cm³ = (10^-2)³= 10^-6 m³

So 0.8g/cm³= (0.8 x 10^-3)/(10 x 10^-6)

=0.8 x 10^-3 x 10^6= 0.8 x 10^3

= 800- Kg/m³

Note: In general to convert density from g/cm³ (or)g/ ml to Kg/m³.

You simply multiply g/cm³ x1000 to get Kg/m³.