On a particular day, the atmospheric pressure is 1.0×105 Pa1.0 \times 10^{5}\text{ Pa}1.0×105 Pa. A bubble of gas forms at a point 6.0 m6.0\text{ m}6.0 m below the surface of a deep pool of fresh water. The density of the water is 1000 kg/m31000\text{ kg/m}^{3}1000 kg/m3 and the acceleration of free fall ggg is to be taken as 10 m/s210\text{ m/s}^{2}10 m/s2.
Determine:
(i) the total pressure at a depth of 6.0 m6.0\text{ m}6.0 m in the water,
pressure = .........................................................
(ii) the pressure of the gas in the bubble.
pressure = .........................................................
As the bubble rises to the surface, the mass of gas in the bubble stays constant. The temperature of the water is constant throughout. Explain why the bubble rises to the surface and why its volume increases as it rises.
188 exam-style questions on CIE IGCSE Physics Pressure, covering Pressure. Each one has a worked solution and a mark scheme showing where the marks go.