A composite block has a total volume of 500 cm3. It is made from two solid materials, A and B, which fill the block with no gaps. The densities of the materials are shown in the table.
| Material | Density (g/cm3\mathrm{g/cm^3}g/cm3) |
|---|---|
| A | 0.90 |
| B | 1.50 |
Calculate the volume of material B needed for the average density of the block to be 1.26 g/cm3.
87 exam-style questions on Edexcel GCSE Physics 14.1 Density and states of matter, covering 14.1.1 Kinetic theory and states of matter, 14.1.2 Density, and 14.1.3 Density and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.