A-Level如何选课？6种堪称完美的A-Level选课组合！
A-Level ( Advanced Level)，英国高中课程，超过70多门学科供学生选择，一般学生选择3-4门课程进行学习，热门课程包括数学、物理、生物、化学、心理学、经济学等学科。A-Level课程的最大的优点是打破了文理科限制...
AQA A Level Physics复习笔记6.5.1 The Kelvin Scale & Absolute Zero
The Kelvin Scale & Absolute Zero On the thermodynamic (Kelvin) temperature scale, absolute zero is defined as: The lowest temperature possible. Equal to 0 K or -273.15 °C It is not possi...
AQA A Level Physics复习笔记6.4.4 Latent Heat Capacity
Latent Heat Capacity Energy is required to change the state of a substance Examples of changes of state are: Melting = solid to liquid Evaporation / vaporisation / boiling = liquid to gas Su...
AQA A Level Physics复习笔记6.4.3 Specific Heat Capacity
Specific Heat Capacity When a substance is heated, its temperature rises causing the particles within it to gain kinetic energy The amount of energy required to raise the temperature of a su...
AQA A Level Physics复习笔记6.4.2 The First Law of Thermodynamics
The First Law of Thermodynamics The First Law of Thermodynamics, which is based on the principle of conservation of energy, states: The internal energy of a system is increased when energy i...
AQA A Level Physics复习笔记6.4.1 Internal Energy
Internal Energy Energy can be classified into two forms: kinetic or potential energy The molecules of all substances contain both kinetic and potential energies Kinetic energy is due to the ...
AQA A Level Physics复习笔记6.3.3 Resonance
Resonance The frequency of forced oscillations is referred to as the driving frequency (f) or the frequency of the applied force All oscillating systems have a natural frequency (f0), this i...
AQA A Level Physics复习笔记6.3.2 Free & Forced Oscillations
Free & Forced Oscillations Free Oscillations Free oscillations occur when there is no transfer of energy to or from the surroundings This happens when an oscillating system is displaced ...
AQA A Level Physics复习笔记6.3.1 Damping
Damping In practice, all oscillators eventually stop oscillating Their amplitudes decrease rapidly, or gradually This happens due to resistive forces, such as friction or air resistan...
