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 ▸A 1kg spring has an unloaded length 10cm and has an elastic constant of 100N/m. It is compressed to 6cm then placed facing upwards on the floor. When released it travels vertically upwards. How high does it jump? You may assume no energy is lost to heat o
Why are neutrinos hard to detect?
Using Newton's law of universal gravitation, show that T^2 is proportional to r^3 (where T is the orbital period of a planet around a star, and r is the distance between them).
What is resistivity in S.I. units?