A student wants to find the mass of a small brass key. She has a measuring cylinder containing water and an electronic balance. She has no other apparatus and does not know the density of brass.
Which of these could she use to find the mass of the key?
either the measuring cylinder containing water or the electronic balance
the measuring cylinder containing water only
the electronic balance only
neither the measuring cylinder nor the electronic balance
164 exam-style questions on CIE IGCSE Physics Physical quantities and measurement techniques, covering Physical quantities and measurement techniques. Each one has a worked solution and a mark scheme showing where the marks go.