Materials: Density

Q2. Jess measured the width of a solid metal cube using a digital micrometer.

The diagram shows the micrometer. The resolution of the micrometer is 0.01 mm

(a) Jess could have used a metre rule to measure the width of the cube.

Explain how using a metre rule would have affected the accuracy of the her measurement of the width.

[2 marks]

(b) The mass of the metal cube was measured using a 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.

[2 marks]

The density of the cube was 8.0 × 10³ kg/m³

Calculate the mass of the cube.

[5 marks]

[Total: 9 marks]