A chef uses a sharp knife to cut vegetables.
Explain why a sharp knife cuts food more easily than a blunt knife. Use ideas about pressure in your answer.
The edge of the blade has a contact area of 0.15 cm2. The chef presses with a force of 30 N normal to the blade. Calculate the pressure the blade exerts on the food. Give your answer in Pa.
41 exam-style questions on AQA GCSE Physics 5.5 Pressure and pressure differences in fluids, covering 5.5.1 Pressure in a fluid and 5.5.2 Atmospheric pressure. Each one has a worked solution and a mark scheme showing where the marks go.