In a simple model, the atmosphere is a layer of air with a uniform density of 1.2 kg/m3.
Atmospheric pressure at sea level is 1.0 × 105 Pa.
What is the height of the atmosphere in this model?
Use the Equation Sheet.
Use g=10 N/kgg = 10\ \text{N/kg}g=10 N/kg
0.083 km0.083\ \text{km}0.083 km
0.83 km0.83\ \text{km}0.83 km
8.3 km8.3\ \text{km}8.3 km
83 km83\ \text{km}83 km
50 exam-style questions on OCR GCSE Physics 1.3 Pressure, covering 1.3.1 Molecular motion, temperature and gas pressure, 1.3.2 Gas pressure at constant volume, 1.3.3 Compressing and expanding gases, 1.3.4 Gas volume and pressure at constant temperature, 1.3.5 Doing work on a gas, 1.3.6 The Earth's atmosphere and atmospheric pressure, 1.3.7 Atmospheric pressure and height, 1.3.8 Floating and sinking, 1.3.9 Pressure in liquids and upthrust, and 1.3.10 Pressure differences with depth. Each one has a worked solution and a mark scheme showing where the marks go.