An industrial bronze alloy in its liquid state has a density of 9000 kg m-3.
A casting mold is filled with 5.0 × 10-3 m3 of this liquid alloy. After cooling and completely solidifying, the volume of the bronze casting is measured to be 4.5 × 10-3 m3 due to thermal contraction.
What is the density of the solid bronze casting?
8100 kg m−38100\text{ kg m}^{-3}8100 kg m−3
9500 kg m−39500\text{ kg m}^{-3}9500 kg m−3
10000 kg m−310000\text{ kg m}^{-3}10000 kg m−3
90000 kg m−390000\text{ kg m}^{-3}90000 kg m−3
29 exam-style questions on OCR GCSE Physics The particle model. Each one has a worked solution and a mark scheme showing where the marks go.