A technician measured the width of a solid zinc cube using a digital micrometer.
The resolution of the micrometer is 0.01 mm.
The technician could have used a standard vernier caliper with a resolution of 0.1 mm to measure the width of the cube.
Explain how using the vernier caliper would have affected the accuracy of the technician's measurement of the width.
The mass of the zinc cube was measured using an electronic laboratory balance.
The balance had a zero error.
Explain how this zero error may be corrected after the measurements have been recorded.
The width of the zinc cube was 16.80 mm. The density of the zinc was 7.14 × 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.