A technician calibrates a pressure sensor using a vertical tube filled with oil. The top of the oil column and the opposite side of the sensor are both exposed to atmospheric pressure.
The pressure difference produced by the oil column acts normally on the sensor surface.
| Quantity | Value |
|---|---|
| Required force on the sensor | 18 N |
| Area of the sensor surface | 40 cm2 |
| Density of the oil | 850 kg/m3 |
| Gravitational field strength | 9.8 N/kg |
Calculate the vertical height of the oil column needed to produce the required force on the sensor.
108 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.