CAPE Physics Unit 1 · 2010 · Paper 1 · Question Q2
In determining the density of a cube a student records the following measurements:
Length of side, l = 3.0 \pm 0.1\text{ cm}
Mass of cube, m = 12.5 \pm 0.5\text{ g}
The student then uses the equation \rho = \frac{m}{l^3} to determine the density of the cube. The percentage error in the calculated value of \rho is
- (A)0.6%
- (B)7%
- (C)14%
- (D)40%
The answer is shown once you've answered.
Practise this question