An engineer needs to determine whether a solid plastic bead will float when placed in a laboratory beaker of oil.
Which of the following pairs of physical properties is both necessary and sufficient to make this prediction?
The volume of the bead and the volume of the oil
The density of the bead and the density of the oil
The mass of the bead and the volume of the oil
The surface area of the bead and the depth of the oil
169 exam-style questions on CIE IGCSE Physics Density, covering Density. Each one has a worked solution and a mark scheme showing where the marks go.