A student is using a pack of rectangular brass plaques to design a mosaic. The dimensions of each plaque are 15.0 cm×8.0 cm×0.25 cm15.0\text{ cm} \times 8.0\text{ cm} \times 0.25\text{ cm}15.0 cm×8.0 cm×0.25 cm.
State the name of a suitable instrument for measuring the length and width of a plaque.
Describe how the student can determine an accurate average thickness of one plaque using only a standard millimetre ruler.
The mass of one brass plaque is 255 g.
Calculate the volume of one plaque in cm3\text{cm}^3cm3.
Calculate the density of the plaque. Include the unit in your answer.
Calculate the weight of one plaque. (Take the acceleration of free fall g=9.8 m/s2g = 9.8\text{ m/s}^2g=9.8 m/s2 or 10 m/s2)
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.