An underwater monitoring instrument is lowered from a ship into the sea. The surface of the sea is exposed to the atmosphere. The instrument can operate only while the total pressure acting on it does not exceed its pressure limit.
| Quantity | Value |
|---|---|
| Pressure limit of instrument | 510000 Pa |
| Atmospheric pressure | 100000 Pa |
| Density of seawater | 1025 kg m−31025\ \mathrm{kg\,m^{-3}}1025 kgm−3 |
| Gravitational field strength | 10 N kg−110\ \mathrm{N\,kg^{-1}}10 Nkg−1 |
Calculate the maximum depth at which the instrument can operate.
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.