Edexcel IGCSE Physics 复习笔记 5.2.1 Solids, Liquids & Gases
Edexcel IGCSE Physics 复习笔记 5.2.1 Solids, Liquids & Gases Solids, Liquids & Gases Matter can exist in one of three different states: solid, liquid, or gas Solids In a solid...
IB DP Maths: AI HL复习笔记1.1.3 GDC: Solving Equations
Systems of Linear Equations What are systems of linear equations? A linear equation is an equation of the first order (degree 1) It is usually written in the form ax + by + c = 0 where a, b, and c ...
BMO英国数学奥赛对中国学生开放，可直接报名！
重大好消息！ 中国学生可以直接参加BMO了！ 在此之前，BMO是让我们“望眼欲穿”的赛事。想要参加BMO，必须先参加SMC（Senior Maths Challenge）并取得优异成绩，而SMC不接受个人报名，必须由英国教育体制的学校统一...
Edexcel IGCSE Physics 复习笔记 5.1.4 Pressure in Liquids
Edexcel IGCSE Physics 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 pressure, squeezi...
IB DP Maths: AI HL复习笔记1.1.2 Approximation & Estimation
Approximating Values How do I know what to round my answer to? Unless otherwise told, always round your answers to 3 significant figures (3 s.f.) The first non-zero digit is the first significant d...
Edexcel IGCSE Physics 复习笔记 5.1.3 Pressure
Edexcel IGCSE Physics 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 drawing pin is pushed ...
Edexcel IGCSE Physics 复习笔记 5.1.2 Core Practical: Determining Density
Edexcel IGCSE Physics 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 = 1 mm Vernier ca...
IB DP Maths: AI HL复习笔记1.1.1 Standard Form
Standard Form Standard form (sometimes called scientific notation or standard index form) gives us a way of writing very big and very small numbers using powers of 10. Why use standard form? Some n...
Edexcel IGCSE Physics 复习笔记 5.1.1 Density
Edexcel IGCSE Physics 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 typically have a low ...
