A student wishes to determine the density of an irregular solid object, such as a metal key.
The student has a balance, a measuring cylinder containing some water, and a piece of thin thread. Describe an experiment to determine the density of the key.
State a suitable unit of density that the student would obtain using this equipment.
A solid block of cork is placed into a beaker of water. Explain why the cork floats on the water.
The weight of the cork block is 0.35 N0.35\text{ N}0.35 N. Taking the gravitational field strength as g=10 N/kgg = 10\text{ N/kg}g=10 N/kg, calculate the mass of the block in kilograms.
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.