- A small block of aluminium has a volume of `6 times 10^(-6)` `m^3` and a mass of `1.62 times 10^(-2)` `kg`. Find its density.
- A flask with a volume of `500` `cm^3` has a mass of `60` `g` when empty and `495` `g` when full of turpentine. Find the density of turpentine.
- A lump of moon rock weighs about six times as much on earth as it did on the moon. Its density, however, is exactly the same. Explain why?
- An alloy of copper and tin has a volume of `100` `cm^3`. The density of copper is `8.9` `g`/`cm^3` and of tin `7.3` `g`/`cm^3`. How much volume of each metal must be used if the alloy is to have a density of `7.62` `g`/`cm^3` ?
- A steel sphere of density `7800` `kg`/`m^3` and volume `136` `cm^3` floats in mercury of density `13 600` `kg`/`m^3`. What volume of the sphere remains above the surface?
- An iceberg of density `920` `kg`/`m^3` floats in sea-water of density `1030` `kg`/`m^3`. What percentage of the volume is submerged?

**Recommended Lessons**

- A small block of aluminium has a volume of `6 times 10^(-6)` `m^3` and a mass of `1.62 times 10^(-2)` `kg`. Find its density.
- A flask with a volume of `500` `cm^3` has a mass of `60` `g` when empty and `495` `g` when full of turpentine. Find the density of turpentine.
- A lump of moon rock weighs about six times as much on earth as it did on the moon. Its density, however, is exactly the same. Explain why?
- An alloy of copper and tin has a volume of `100` `cm^3`. The density of copper is `8.9` `g`/`cm^3` and of tin `7.3` `g`/`cm^3`. How much volume of each metal must be used if the alloy is to have a density of `7.62` `g`/`cm^3` ?
- A steel sphere of density `7800` `kg`/`m^3` and volume `136` `cm^3` floats in mercury of density `13 600` `kg`/`m^3`. What volume of the sphere remains above the surface?
- An iceberg of density `920` `kg`/`m^3` floats in sea-water of density `1030` `kg`/`m^3`. What percentage of the volume is submerged?

**Recommended Lessons**