State the equation linking the density of a substance with its mass and volume.
When a storage tank at an industrial facility leaks, it forms a thin layer of oil on the surface of a nearby containment pond.
One such oil slick covers an approximately rectangular area measuring 3.5×104 m3.5 \times 10^4\text{ m}3.5×104 m by 2.0×103 m2.0 \times 10^3\text{ m}2.0×103 m.
The oil slick is 5.0×10−6 m5.0 \times 10^{-6}\text{ m}5.0×10−6 m (0.0000050 m0.0000050\text{ m}0.0000050 m) thick.
Calculate the volume of the oil slick.
The density of the oil is 850 kg/m3850\text{ kg/m}^3850 kg/m3.
Calculate the mass of oil in the slick.
169 exam-style questions on CIE IGCSE Physics Density, covering Density. Each one has a worked solution and a mark scheme showing where the marks go.