Question

A cube of plastic 1.2x10^-5 km on a side has a mass of 1.1 g. what is its density in g/cm^3

Answer 1

Length of 1 side 1.2*10^-5km =1.2*10^-5*10^5 =1.2cm 

volume of the cube (1.2)^3=1.728 cm^3 

density= mass/volume= 1.1/1.728=0.636 g/cm^3

Answer 2

Answer:

$0.6366 g/cm^3$ is the density of the cubic plastic.

Explanation:

Mass of the cubic block= m = 1.1 g

Volume of the cubic block = V

Volume of the cube = $a^3$

a = side length = $1.2\times 10^{-5} km = 1.2 cm$

1 km = 100,000 cm

Volume of cubic block = $V=(12 cm)^3=1.728 cm^3$

Density of the solid block,d = ?

$Density=\frac{Mass}{Volume}$

$d=\frac{m}{V}=\frac{1.1 g}{1.728 cm^3}=0.6366 g/cm^3$

$0.6366 g/cm^3$ is the density of the cubic plastic.