2022-2023秋季高质量国际竞赛时间表出炉，报名即将截止！
读海外名校是不少学生的梦想，与高考后的大学录取不同，海外大学在录取学生时还会额外对学生的学习能力进行了解，各种学术学术活动就是这部分最重要的加分项。2022-2023秋季高质量国际学术活动时间表已出炉，汇总...
Edexcel A Level Physics:复习笔记6.6 Energy-Momentum Relation
Deriving the Energy-Momentum Relation The equation for calculating the kinetic energy Ek of a particle m moving at velocity v is given by: The formula for the momentum p of the same particle is: Co...
Edexcel A Level Physics:复习笔记6.5 Elastic & Inelastic Collisions
Elastic & Inelastic Collisions In both collisions and explosions, momentum is always conserved However, kinetic energy might not always be A collision (or explosion) is either: Elastic – if the...
Edexcel A Level Physics:复习笔记6.4 Core Practical 10: Investigating Collisions using ICT
Core Practical 10: Investigating Collisions using ICT Aims of the Experiment To investigate conservation of momentum in two directions Considering if collisions are elastic Constructing a diagram o...
Edexcel A Level Physics:复习笔记6.3 Applying Conservation of Linear Momentum
Applying Conservation of Linear Momentum The principle of conservation of linear momentum states: The total momentum before a collision = the total momentum after a collision provided no external f...
Edexcel A Level Physics:复习笔记6.2 Core Practical 9: Investigating Impulse
Core Practical 9: Investigating Impulse Aims of the Experiment To determine the change in momentum of a trolley due to a force acting on it This is known as the impulse Variables Independent variab...
Edexcel A Level Physics:复习笔记6.1 Impulse
Impulse Force is defined as the rate of change of momentum on a body The change in momentum is defined as the final momentum minus the initial momentum These can be expressed as follows: Def...
2022年10-12月高含金量计算机竞赛汇总
申请美国大学越来越内卷，尤其是名校申请。复盘近三年被TOP20录取的大陆学生，或多或少都有学术活动经历，甚至有家长总结“学术活动是申请TOP20的标配”。虽然不是很准确，但已经足以说明“内卷”程度。 2022年已过大...
Edexcel A Level Physics:复习笔记5.38 Atomic Line Spectra
Atomic Line Spectra An emission line spectrum is produced when: An excited electron in an atom moves from a higher to a lower energy level and emits a photon with an energy corresponding to the dif...
Edexcel A Level Physics:复习笔记5.37 The Particle Nature of EM Radiation
The Particle Nature of EM Radiation The Particle Nature of Light In classical wave theory, electromagnetic (EM) radiation is assumed to behave as a wave This is demonstrated by the fact EM radiatio...
Edexcel A Level Physics:复习笔记5.36 The Electronvolt
The Electronvolt The electronvolt is a unit which is commonly used to express very small energies This is because quantum energies tend to be much smaller than 1 Joule The electronvolt is derived f...
Edexcel A Level Physics:复习笔记5.35 The Photoelectric Equation
The Photoelectric Equation Since energy is always conserved, the energy of an incident photon is equal to: The work function + the maximum kinetic energy of the photoelectron The energy within a ph...
