A student measured the width of a solid copper cube using a digital micrometer.
The resolution of the micrometer is 0.01 mm.
The student could have used a standard metre rule to measure the width of the cube.
Explain how using a metre rule would have affected the accuracy of the student's measurement of width.
The mass of the copper cube was measured using an electronic top-pan balance.
The balance had a zero error.
Explain how the zero error may be corrected after readings had been taken from the balance.
The width of the cube was 14.50 mm. The density of the copper cube was 8.9 × 103 kg/m3.
Calculate the mass of the cube. Give your answer to 3 significant figures.
22 exam-style questions on AQA GCSE Physics 3.1 Changes of state and the particle model, covering 3.1.1 Density of materials and 3.1.2 Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.