Question

1. a block of wood 3.0 cm on each side and has a mass of 27 g. what is the density of this block? $\frac{27g}{3.0cm}=9g/cm$

Explanation:

Step1: Calculate volume of cube

The block is a cube with side length $a = 3.0\ cm$. The volume formula for a cube is $V=a^3$. So $V=(3.0\ cm)^3=27\ cm^3$.

Step2: Calculate density

The density formula is $
ho=\frac{m}{V}$, where $m = 27\ g$ and $V = 27\ cm^3$. Then $
ho=\frac{27\ g}{27\ cm^3}=1\ g/cm^3$.

Answer:

$1\ g/cm^3$