A uniform wire has a mass of 53.4 g, a length of 2.00 m and a density of 8900 kg/m3. The volume of the wire is its cross-sectional area multiplied by its length. What is its cross-sectional area?
6.00×10−6 m26.00\times10^{-6}\ \mathrm{m^2}6.00×10−6 m2
3.00×10−3 m23.00\times10^{-3}\ \mathrm{m^2}3.00×10−3 m2
3.00×10−6 m23.00\times10^{-6}\ \mathrm{m^2}3.00×10−6 m2
1.20×10−5 m21.20\times10^{-5}\ \mathrm{m^2}1.20×10−5 m2
87 exam-style questions on Edexcel GCSE Physics 14.1 Density and states of matter, covering 14.1.1 Kinetic theory and states of matter, 14.1.2 Density, and 14.1.3 Density and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.