A student uses a sinker to measure the volume of a piece of wax that floats. The sinker alone increases the cylinder reading from 40 cm3 to 52 cm3. The fully submerged sinker and wax together give a reading of 82 cm3. The wax has a mass of 27 g. What is its density?
0.90 g/cm30.90\ \mathrm{g/cm^3}0.90 g/cm3
0.64 g/cm30.64\ \mathrm{g/cm^3}0.64 g/cm3
2.25 g/cm32.25\ \mathrm{g/cm^3}2.25 g/cm3
0.33 g/cm30.33\ \mathrm{g/cm^3}0.33 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.