A Level考試取得三個A*有多難？
學習A Level的同學都知道大部分英國院校發放的本科offer是基于三門A Level成績，而每一門A Level的最高等級就是A*，在每年的Alevel考試中，取得三個A*的成績都是很多同學的目標。那么A Level考試取得三個A*有多難...
Edexcel A Level Physics:復習筆記6.7 Radians & Angular Displacement
Radians A?radian?(rad) is defined as: The angle subtended at the centre of a circle by an arc equal in length to the radius of the circle Radians are used whenever describing the angular displaceme...
Edexcel A Level Physics:復習筆記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:復習筆記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:復習筆記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:復習筆記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:復習筆記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:復習筆記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...
Edexcel A Level Physics:復習筆記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...
