Explain, in terms of the behaviour of molecules, how a gas exerts a pressure on the walls of its container. (4)
This question is 4 marks so you need to make at least 4 points.
These types of questions just require memorising the 4 points:
Lots of molecules collide with the walls.
The molecules change momentum as they collide with the walls.
Force is the rate of change of momentum.
Pressure = force/area.
Remember these 4 points and you'll get full marks for the question.
JF
Related Physics A Level answers
All answers ▸What velocity should your boat have if you want to cross a 72m wide river in 6s by the shortest distance, with a 5 m/s downstream current?
A man weighing 600N steps on a scale that contains a spring. The spring is compressed 1cm under their weight. Find the force constant of the spring and total work done on its compression.
A car is travelling at 20 m/s. The accelerator is applied, causing an acceleration of 2m/s^s. How fast is the car travelling after 10 seconds of acceleration?
Whats the effective resistance in a parallel and series circuit with a cell and two 12 ohms resistors ?