Edexcel A Level Physics:复习笔记4.8 Stress-Strain Graphs
Stress-Strain Graphs Stress-strain curves give an indication of the properties of materials such as Up to what stress and strain they obey Hooke's Law Whether they exhibit elastic and/or pla...
Edexcel A Level Physics:复习笔记4.7 Force-Extension Graphs
Force-Extension Graphs The way a material responds to a tensile or compressive force can be shown on a force-extension, or a force-compression graph Although compression can be put into?equa...
Edexcel A Level Physics:复习笔记4.6 Stress, Strain & The Young Modulus
Stress & Strain Stress Stress is the?applied force per unit cross sectional area?of a material Forces can be; Tensile forces, which pull on an object and extend it Compressive forces, which pus...
Edexcel A Level Physics:复习笔记4.5 Hooke's Law
Hooke's Law When a force?F?is added to the bottom of a vertical metal wire of length?L, the wire?stretches A material obeys Hooke’s Law if: The extension of the material is directly proportional to...
AP化学考试真题解析，AP化学考试的重难点是什么？
AP化学其实说难也不难，说简单也不简单，因为化学知识点又多又杂，太烦啦！而且AP化学5分率低，导致有不少同学不太敢选化学……但是对于打算申请生物化学、物理、环境科学相关专业，或者想提升课程难度、证明个人能...
2023年AP化学考试改革，AP考试如何报名？
在许多AP科目中，化学的五分率一直不高，AP化学5分容错率为25%左右，作为大部分理、工科学生必修的一门课程，是很多同学报考的科目。AP化学考试内容有哪些？2023年AP课程考试报名开启！尤其是社会考生！ AP化学课...
Edexcel A Level Physics:复习笔记4.4 Core Practical 4: Investigating Viscosity
Core Practical 4: Investigating Viscosity of a Liquid Aim of the Experiment By allowing small spherical objects of known weight to fall through a fluid until they reach terminal velocity, the?visco...
Edexcel A Level Physics:复习笔记4.3 Viscous Drag
Stoke's Law Viscous Drag Viscous drag is defined as the frictional force between an object and a?fluid?which opposes the the motion between the object and the fluid Viscous drag is calculated using...
Edexcel A Level Physics:复习笔记4.2 Upthrust
Upthrust Archimedes' Principle Archimedes’ principle states: An object submerged in a fluid at rest has an upward buoyancy force (upthrust) equal to the weight of the fluid displaced by the object ...
