Spherical lead pellets are commonly used as ballast in model boat hulls to lower their centre of mass.
Describe how a standard millimetre-graduated ruler and two identical rectangular wooden blocks can be used to accurately determine the diameter of a single lead pellet.
Outline an experimental procedure to determine the density of the lead alloy from which these pellets are made.
44 exam-style questions on Edexcel IGCSE Physics Density and pressure. Each one has a worked solution and a mark scheme showing where the marks go.