Given that a table tennis ball has a mass of $2.7g$ and a diameter of $40\mathrm{mm}$, what is the average density of the ball in $\mathrm{kg}/m^3$? (Assume the ball is a perfect sphere.)

Two cylinders, X and Y, are made of the same material and have equal masses. Cylinder X has a density of $8g/\mathrm{cm}{3}^3$ and cylinder Y has a density of $4g/\mathrm{cm}{3}^3$. Which best compares the volumes of cylinder X and cylinder Y?

Which statement is true about the mass and volume of all objects that sink when placed in water?

Which physical phenomenon is primarily caused by density differences within fluids?

If you have two solid steel spheres and sphere $2_{}$ has twice the radius of sphere $1_{}$, how does the density of sphere $2_{}$ compare to that of sphere $1_{}$?

A cylindrical specimen of brass has a diameter of $20 \mathrm{mm}$ and a height of $100 \mathrm{mm}$. If its mass is $0.27 \mathrm{kg}$, what is the density of the brass in $\mathrm{kg}/m^3$?