A robotic submarine is exploring a deep freshwater lake. The total pressure on the robotic submarine is due to both the water above it and the Earth's atmosphere.
The pressure of the air on the surface of the water is 1 atmosphere1\text{ atmosphere}1 atmosphere. An additional depth of 10 m of water is equivalent to 1 atmosphere1\text{ atmosphere}1 atmosphere.
Identify the total pressure, in atmospheres, acting on the robotic submarine at a depth of 30 m.
111
333
444
555
54 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.