A rectangular piece of wood measures $4 \mathrm{cm}$ by $6 \mathrm{cm}$ by $8 \mathrm{cm}$ and has a mass of $20 \mathrm{g}$. What is the density of the piece of wood? Will this piece float in water or not?

The capacity of an RD bottle is $100 \mathrm{cc}$ and its mass is $45 \mathrm{g}$. Find the mass of the bottle when it is filled with a liquid of density $600 \mathrm{kg}/{\mathrm{m}}^3$.

An empty RD bottle weighs $60 \mathrm{g}$ but weighs $120 \mathrm{g}$ when completely filled with water. When the bottle is completely filled with an unknown liquid, it weighs $90 \mathrm{g}$. Calculate the
a. Volume of the RD bottle.
b. Density of the unknown liquid.

Determine the density of the liquid. A liquid of mass $1196 \mathrm{g}$ and volume $75 \mathrm{mL}$ is poured into a measuring cylinder.

Determine the density of the liquid. A liquid of mass $75 \mathrm{g}$ and volume $92 \mathrm{mL}$ is poured into a measuring cylinder.

Does a body having a relative density of $1.2$ will sink or float in water and why?

Does a body having a relative density of $0.8$ will sink or float in water and why?