Question

The mass of an object is $20g$ and its volume is $4c{m}^3$ . What is its density?

Answer 1

Step 1: Given:

The mass of an object is $20g$

Volume$\mathbf{=}\mathbf{4}\mathit{c}{\mathit{m}}^{\mathbf{3}}$

Step 2: Calculate the density,

The density of a substance is defined as its mass per unit volume.

We know that,

$\mathit{D}\mathit{e}\mathit{n}\mathit{s}\mathit{i}\mathit{t}\mathit{y}\mathbf{=}\frac{\mathbf{M}\mathbf{a}\mathbf{s}\mathbf{s}}{\mathbf{V}\mathbf{o}\mathbf{l}\mathbf{u}\mathbf{m}\mathbf{e}}$

$$\begin{gathered} \mathbf{=}\frac{\mathbf{20}}{\mathbf{4}} \\ \mathbf{=}\mathbf{5}\mathit{g}\mathbf{/}\mathit{c}{\mathit{m}}^{\mathbf{3}} \end{gathered}$$

Hence, the density of an object is $5g/c{m}^3.$