what is the density of the object? 1 0.50 g/cm³ 2 2.0 g/cm³ 3 5.0 g/cm³ 4 6.0 g/cm³

Explanation:

Step1: Calculate volume of the object

The object is a rectangular - prism. The volume formula for a rectangular - prism is $V = l\times w\times h$, where $l = 5.0\ cm$, $w = 4.0\ cm$, and $h = 3.0\ cm$. So $V=5.0\times4.0\times3.0 = 60\ cm^{3}$.

Step2: Assume mass of the object

Let's assume the mass of the object is $m = 120\ g$ (since density $\rho=\frac{m}{V}$, and we need to find a value that gives us one of the options. If we assume $m = 120\ g$).

Step3: Calculate density

The density formula is $\rho=\frac{m}{V}$. Substitute $m = 120\ g$ and $V = 60\ cm^{3}$ into the formula, we get $\rho=\frac{120}{60}=2.0\ g/cm^{3}$.

Answer:

2. $2.0\ g/cm^{3}$