A technician checks two stationary liquids, X and Y, in separate sealed pipe systems. Each system has an upper pressure gauge and a lower pressure gauge. The gauges are separated by the same vertical distance.
| Liquid | Vertical distance between gauges in m\text{m}m | Pressure at upper gauge in kPa\text{kPa}kPa | Pressure at lower gauge in kPa\text{kPa}kPa |
|---|---|---|---|
| X | 1.5 | 230.0 | 242.9 |
| Y | 1.5 | 175.0 | 192.6 |
Deduce whether liquid X or liquid Y has the greater density.
Justify your answer with calculations based on the pressure readings.
132 exam-style questions on Edexcel GCSE Physics 15.2 Pressure in fluids, covering 15.2.1 Atmospheric pressure and height, 15.2.2 Pressure in fluids, 15.2.3 Pressure, force and area, 15.2.4 Pressure and depth, 15.2.5 Pressure in liquids: depth and density, 15.2.6 Upthrust, and 15.2.7 Floating and sinking. Each one has a worked solution and a mark scheme showing where the marks go.