Question

1. a. If the density of wood is 0.5 g/cm3 what is the mass of
(i) 1 cm3,
(ii) 2 cm3,
(iii) 10 cm3?
b. What is the density of a substance of
(i) mass 100 g and volume 10 cm3,
(ii) volume 3 m3 and mass 9 kg?
c. The density of gold is 19 g/cm3. Find the volume of
(i) 38 g,
(ii) 95 g of gold.

Answer 1

500 kg/m3

Thus, 1 gm/cc is expressed as 104kg/m3 . Hence, 0.5 gm/cc can be expressed as 0.5×104kg/m3so; the value of 0.5 gm/cc is equals to 500 kg/m3 in MKS units. So the correct value of density of wood in MKS units is 500.