A student has 400 identical, rectangular plastic sheets. The mass of 1.0 m2 of the plastic is 0.120 kg.
Using a metre rule, she measures the length of one sheet of plastic and its width. The length is 0.250 m and the width is 0.160 m.
Calculate the mass of one sheet of plastic.
The student makes a single pile of the 400 sheets of plastic.
With a metre rule, she measures the height of the pile. The height of the pile is 0.032 m.
Calculate the density of the plastic.
A second student has only 4 sheets of the same type of plastic.
Suggest how this student determines the density of the plastic to a similar accuracy. Additional apparatus may be used.
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.