A weather balloon contains 5.0 m3 of helium at a pressure of 100 kPa.
The balloon rises to a height where the pressure of the helium is 25 000 Pa25\,000\ \text{Pa}25000 Pa. Assume the temperature of the helium stays the same.
Use the equation: pressure×volume=constant\text{pressure} \times \text{volume} = \text{constant}pressure×volume=constant
What is the volume of the balloon at this height?
0.020 m30.020\ \text{m}^30.020 m3
1.25 m31.25\ \text{m}^31.25 m3
5.0 m35.0\ \text{m}^35.0 m3
20 m320\ \text{m}^320 m3
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.