Edexcel IGCSE Physics: Double Science 复习笔记：5.2.1 Kinetic Theory Kinetic Theory of Gases Molecules in a gas are in constant random motion at high speeds Random motion means that the mole...
Edexcel IGCSE Physics: Double Science 复习笔记：5.1.4 Pressure in Liquids Pressure in Liquids A fluid is either a liquid or a gas When an object is immersed in a fluid, the fluid will exert ...
Edexcel IGCSE Physics: Double Science 复习笔记：5.1.3 Pressure Pressure Pressure is defined as The concentration of a force or the force per unit area For example, when a drawi...
2023泰晤士世界大学学科排名已正式揭晓！泰晤士高等教育世界大学排名通过对 1550 万份研究出版物和 1.21 亿次出版物引用，以及对年度学术声誉调查的 40,000 多份回复和数以万计的额外数据点的分析，提供了对大学...
Solving & Interpreting Differential Equations How do I solve a differential equation? Solving differential equations uses integration! The precise integration method will depend on the type of ...
Edexcel IGCSE Physics: Double Science 复习笔记：5.1.2 Core Practical: Determining Density Core Practical 9: Determining Density Equipment List Resolution of measuring equipment: 30 cm ruler ...
Modelling with Differential Equations What can be modelled with differential equations? Derivative terms like are “rates of change” There are many situations that involve “change” Temperature R...
Edexcel IGCSE Physics: Double Science 复习笔记：5.1.1 Density Density Density is defined as: The mass per unit volume of a material Objects made from low density materials typi...
Separation of Variables What does separation of variables mean? Many differential equations used in modelling either … … have two variables involved (ie x and y), or, ... involve a function of the ...
Particular Solutions What is a particular solution? Ensure you are familiar with General Solutions first With extra information, the constant of integration, c, can be found This means the particul...
General Solutions What is a differential equation? Any equation, involving a derivative term, is a differential equation Equations involving only first derivative terms are called first order diffe...
Decision Making What is meant by integration and decision making? The hardest part of integration is deciding which technique to use There are lots of them! How do I know which integration method t...
