Edexcel A Level Physics:复习笔记6.8 Angular Velocity
Angular Velocity The angular velocity ω of a body in circular motion is defined as: The rate of change of angular displacement In other words, angular velocity is the angle swept out by an object i...
Edexcel A Level Physics:复习笔记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: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...
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...
