A high-purity copper busbar used in an electrical substation is machined in the shape of a rectangular cuboid with dimensions 15 mm by 40 mm by 80 mm.
The busbar has a mass of 427.2 g.
Calculate the density of this copper sample in g/cm3\text{g/cm}^3g/cm3.
55 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.