CAIE ALEVEL A2物理考试知识点增加
这一次加的考试内容理解起来不会太难，大家不用太有负担——
Gravitational field
1. Gravitational field lines
2. Geostationary satellite (from communication)
Thermal physic
1.W=pΔV (from AS)
SHM
1. total energy of oscillation
2. Graph of different types of damping
Electric field
1. Uniform electric field (from AS)
Capacitor
1.Discharging of a capacitor
Magnetic field
1. Origin of Hall voltage and use of Hall probe
Quantum physics
1. Momentum of photon p=E/c
Medical physics
1.Minimum wavelength of X-ray
2.PET
Astrophsics
Totally new
