CIE A Level Physics復習筆記16.1.1 Internal energy
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...
CIE A Level Physics復習筆記15.2.3 Average Kinetic Energy of a Molecule
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...
CIE A Level Physics復習筆記15.2.2 Derivation of the Kinetic Theory of Gases Equation
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...
CIE A Level Physics復習筆記15.2.1 Kinetic Theory of Gases
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...
CIE A Level Physics復習筆記15.1.3 Ideal Gas Equation
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 ...
CIE A Level Physics復習筆記15.1.2 Ideal Gases
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 ...
美國留學哪些專業就業前景好？
對于留學生來說，大學專業的選擇幾乎就決定了未來的發展方向，因此，收入前景好的專業總是備受青睞，比如每年都有無數學子為了畢業后令人羨艷的起薪，大家都愿意去學CS專業，然而對于有些專業來說，即使你付出了...
CIE A Level Physics復習筆記15.1.1 The Mole
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: ...
CIE A Level Physics復習筆記14.2.2 Specific Latent Heat Capacity
Defining Latent Heat Capacity Energy is required to change the?state?of substance Examples of changes of state are: Melting = solid to liquid Evaporation/vaporisation/boiling = liquid to gas Sublim...
CIE A Level Physics復習筆記14.2.1 Specific Heat Capacity
Defining Specific Heat Capacity The specific heat capacity of a substance is defined as: The amount of thermal energy required to raise the temperature of 1 kg of a substance by 1 °C This quantity ...
CIE A Level Physics復習筆記14.1.4 The Kelvin Scale
Scale of Thermodynamic Temperature As an everyday scale of temperature, Celsius (oC) is the most familiar This scale is based on the properties of water - the freezing point of water was taken as t...
CIE A Level Physics復習筆記14.1.3 Measurement of Temperature
Measurement of Temperature A thermometer is any device that is used to measure temperature Each type of thermometer uses a physical property of a material that varies with temperature - examples of...
