The table shows total pressure readings in a liquid of constant density.
| Depth in m\mathrm{m}m | Total pressure in kPa\mathrm{kPa}kPa |
|---|---|
| 0.20 | 102.2 |
| 0.70 | 107.7 |
Take g=10 N/kgg=10\ \mathrm{N/kg}g=10 N/kg. Use p=hρgp=h\rho gp=hρg. What is the liquid density?
550 kg/m3550\ \mathrm{kg/m^3}550 kg/m3
15400 kg/m315400\ \mathrm{kg/m^3}15400 kg/m3
1100 kg/m31100\ \mathrm{kg/m^3}1100 kg/m3
51100 kg/m351100\ \mathrm{kg/m^3}51100 kg/m3
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.