A packet contains 500 identical sheets of paper.
A student wants to find the thickness of one sheet of paper. The only measuring instrument the student has is a 30 cm ruler with millimetre divisions.
Explain how the student should use the ruler to find the thickness of one sheet of paper.
Your answer should give the thickness in metres, in standard form, to an appropriate number of significant figures.
39 exam-style questions on Edexcel GCSE Physics 1.1 Units and quantities, covering 1.1.1 SI units for physical quantities and 1.1.2 Unit prefixes, conversions, significant figures and standard form. Each one has a worked solution and a mark scheme showing where the marks go.