A robotics engineer is testing a micro-pneumatic actuator containing a fixed mass of gas trapped inside a cylindrical chamber.
Initially, in State 1, the volume of the gas inside the chamber is 45 cm3 and the internal pressure is 104 kPa.
State one physical quantity, other than the mass of gas, that must be kept constant to maintain a predictable relationship between the volume and pressure of the gas.
The piston is pushed in to compress the gas, reducing its volume to 15 cm3 in State 2. Calculate the new pressure of the gas, assuming its temperature remains constant.
Explain, in terms of gas particles, why the pressure on the internal walls of the cylinder increases when the volume of the gas is decreased.
Particle model and pressure Questions
Practise AQA GCSE Physics Particle model and pressure with exam-style questions for Foundation and Higher tier. 12 questions covering Particle motion in gases, Pressure in gases (physics only), and Increasing the pressure of a gas (physics only) (HT only), matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.