Lucy Hawkins, Fran Eardley, Stuart Lloyd and, Gemma Young Solutions for Chapter: Moments, Pressure and Density, Exercise 9: Exercise 9

A glass prism has a mass of $75 \mathrm{g}$ and volume of $30 {\mathrm{cm}}^3$. What is its density?

Mercury has a density of $13.5 \mathrm{g}/{\mathrm{cm}}^3$. Some mercury has a mass of $270 \mathrm{g}$. What volume of mercury do you have?

Steel has a density of $7.4 \mathrm{g}/{\mathrm{cm}}^3$. A lump of steel has a volume $5 {\mathrm{cm}}^3$. What is its mass?

A ring has a mass of $5 \mathrm{g}$and occupies a volume of $0.34 {\mathrm{cm}}^3$. Pure gold has a density of $19.3 \mathrm{g}/{\mathrm{cm}}^3$. Is the ring made of pure gold?