Conditions for Simple Harmonic Motion Simple harmonic motion (SHM) is a specific type of oscillation SHM is defined as: A type of oscillation in which the acceleration of a body is proportional to ...
Describing Oscillations An oscillation is defined as: Repeated back and forth movements on either side of any equilibrium position When the object stops oscillating, it returns to its equilibrium p...
The First Law of Thermodynamics The first law of thermodynamics is based on the principle of conservation of energy When energy is put into a gas by heating it or doing work on it, its internal ene...
Work Done by a Gas When a gas expands, it does work on its surroundings by exerting pressure on the walls of the container it's in This is important, for example, in a steam engine where expanding ...
Defining Internal Energy Energy can generally be classified into two forms: kinetic or potential energy The molecules of all substances contain both kinetic and potential energies The amount of kin...
Average Kinetic Energy of a Molecule An important property of molecules in a gas is their average kinetic energy This can be deduced from the ideal gas equations relating pressure, volume, temperat...
Derivation of the Kinetic Theory of Gases Equation When molecules rebound from a wall in a container, the change in momentum gives rise to a force exerted by the particle on the wall Many molecules...
Assumptions of the Kinetic Theory of Gases Gases consist of atoms or molecules randomly moving around at high speeds The kinetic theory of gases models the thermodynamic behaviour of gases by linki...
Ideal Gas Equation The equation of state for an ideal gas (or the ideal gas equation) can be expressed as: pV = nRT The ideal gas equation can also be written in the form: pV = NkT An ideal gas is ...
Ideal Gases An ideal gas is one which obeys the relation: pV ∝ T Where: p = pressure of the gas (Pa) V = volume of the gas (m3) T = thermodynamic temperature (K) The molecules in a gas move around ...
对于留学生来说，大学专业的选择几乎就决定了未来的发展方向，因此，收入前景好的专业总是备受青睐，比如每年都有无数学子为了毕业后令人羡艳的起薪，大家都愿意去学CS专业，然而对于有些专业来说，即使你付出了...
Amount of Substance In thermodynamics, the amount of substance is measured in the SI unit ‘mole’ This has the symbol mol The mole is a unit of substance, not a unit of mass The mole is defined as: ...
