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...
AQA A Level Physics复习笔记6.2.8 Required Practical: Investigating SHM
Required Practical: Investigating SHM Equipment List Resolution of measuring equipment: Stopwatch = 0.01 s Metre Ruler = 1 mm SHM in a Mass-Spring System The overall aim of this exper...
AQA A Level Physics复习笔记6.2.7 Energy in SHM
Energy in SHM During simple harmonic motion, energy is constantly exchanged between two forms: kinetic and potential The potential energy could be in the form of: Gravitational potential ene...
2023年A-Level考试将迎重大改革！
A-Level考试改革已经传了很久，这一次动真格了！英国学生办公室(OfS)已经制定了一项新的入学制度，该制度可能取消A-Level预估分（predicted result）的使用。取消预估分意味着，学生需要先拿到A-Level实考成绩以...
