(a)[1]
Explain what the accuracy of a measured value means.
(b)
Two solid cubes, A and B, are measured so that the density of the materials they are made from can be determined. Table 1.1 gives the measurements for cube A.
(b(i))[2]
Show that the density calculated for the material of cube A is $8.7 \times 10^3\,\text{kg m}^{-3}$.
(b(ii))[2]
Calculate the percentage uncertainty in the density of the material of cube A.
(b(iii))[2]
The density of the material of cube B is given as $9.2 \times 10^3\,\text{kg m}^{-3} \pm 6\%$. State and explain whether cube A and cube B could be made from the same material.