All of A Level Thermal Physics in 25 minutes!

Here I go through all of thermal physics in A Level Physics. This is all the detail you need to know for your exams.

The biggest ideas in the topic are:
Internal energy is the sum of the randomly distributed potential and kinetic energies of the molecules.
The change in internal energy is equal to the word done on it and the heating applied to it. (These are the two ways to increase the internal energy of something.)
Heating is proportional to the mass, specific heat capacity and the temperature change.
Energy needed for a change in phase is equal to the product of the mass and the specific latent heat.
Absolute temperature (T) is proportional to the average kinetic energy of the molecules.

I go through temperature:
Thermal Equilibrium – objects at the same temperature have no net transfer of energy.
The Zeroth Law of Thermodynamics – if body two objects are in thermal equilibrium with a third object then they must also be in thermal equilibrium with each other.
Absolute Temperature - is proportional to average kinetic energy of the molecules. Absolute temperature does not depend on what substance it is!

I cover solids liquids and gases:
Kinetic model – substances are made of particles with varying kinetic energies and electrostatic forces of attraction.
Internal energy - the sum of the randomly distributed potential and kinetic energies of the molecules of a substance.
Brownian motion – the random motion of particles as a result of collisions with molecules of a surrounding medium.
Brownian motion can be observed using a smoke cell and a microscope in the laboratory.

Thermal properties of materials:
Specific Heat Capacity – energy required to raise the temperature of 1kg of a substance by 1°C
Specific latent heat of fusion – energy required per kg for a change of phase between solid and liquid.
Specific latent heat of vaporisation – energy required per kg for a change of phase between liquid and a gas.

And ideal gases, so that's Boyle's Law, Charle's law and the Gay-Lussac Law (pressure law) and how they are all combined into the ideal gas law.

Other channels cover the content but GorillaPhysics will help you get the grade 9 or that A* at A Level.

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Видео All of A Level Thermal Physics in 25 minutes! канала GorillaPhysics