Edexcel IGCSE Physics 复习笔记 2.1.3 Resistance
Edexcel IGCSE Physics 复习笔记 2.1.3 Resistance Calculating Current, Resistance & Potential Difference Resistance is defined as the opposition to current: The higher the resistance of a ...
Edexcel IGCSE Physics 复习笔记 2.1.2 Voltage & Energy
Edexcel IGCSE Physics 复习笔记 2.1.2 Voltage & Energy Voltage The terminals of a cell make one end of the circuit positive and the other negative This sets up a potential difference acro...
Edexcel IGCSE Physics 复习笔记 2.1.1 Charge & Current
Edexcel IGCSE Physics 复习笔记 2.1.1 Charge & Current Current Electric current is defined as the rate of flow charge In other words, the size of an electric current is the amount of char...
Edexcel IGCSE Physics 复习笔记 1.4.3 Centre of Gravity
Edexcel IGCSE Physics 复习笔记 1.4.3 Centre of Gravity Centre of Gravity The centre of gravity of an object (sometimes called the centre of mass) is defined as: The point through which the weight o...
Edexcel IGCSE Physics 复习笔记 1.4.2 The Principle of Moments
Edexcel IGCSE Physics 复习笔记 1.4.2 The Principle of Moments The Principle of Moments The principle of moments states that: If an object is balanced, the total clockwise moment about...
Edexcel IGCSE Physics 复习笔记 1.4.1 Moments
Edexcel IGCSE Physics 复习笔记 1.4.1 Moments The Moment of a Force As well as causing objects to speed up, slow down, change direction and deform, forces can also cause objects to rotate An ...
Edexcel IGCSE Physics 复习笔记 1.3.4 Momentum & Safety Features
Edexcel IGCSE Physics 复习笔记 1.3.4 Momentum & Safety Features Momentum & Safety Features Since force is equal to the rate of change in momentum, the force of an impact in a vehicle...
Edexcel IGCSE Physics 复习笔记 1.3.3 Newton's Third Law
Edexcel IGCSE Physics 复习笔记 1.3.3 Newton's Third Law Newton's Third Law Newton's third law of motion states: Whenever two bodies interact, the forces they exert on each other are e...
Edexcel IGCSE Physics 复习笔记 1.3.2 Forces & Momentum
Edexcel IGCSE Physics 复习笔记 1.3.2 Forces & Momentum Forces & Momentum When a force acts on an object that is moving, or able to move, the object will accelerate (or decelerate) Th...
