Edexcel A Level Physics:复习笔记5.1 Properties of Waves
Properties of Waves Waves are generated by oscillating sources These oscillations travel away from the source Oscillations can propagate through a medium (e.g. air, water) or in a vac...
Edexcel A Level Physics:复习笔记4.10 Elastic Strain Energy
Area Under a Force-Extension Graph For a material which obeys Hooke's law, the elastic strain energy, Eel can be determined by finding the area under the force-extension graph Since this are...
Edexcel A Level Physics:复习笔记4.9 Core Practical 5: Investigating Young Modulus
Core Practical 5: Investigating Young Modulus of a Material To measure the Young Modulus of a metal in the form of a wire requires a clamped horizontal wire over a pulley (or vertical wire a...
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...
2022加拿大初级化学奥赛JCCO报名开启，入门化学竞赛的首选！
在申请过程中，成绩往往是一个门槛，拥有丰富的背景才能提升自己的核心竞争力，而背景提升里，各种国际学术活动奖项便是一把利刃。 化学学术活动则是为一些化学学习的优秀人才提供表现和学习的平台，通过知识的碰...
2022BMO英国数学奥赛重大调整，中国学生可以直接报名参加BMO！
好消息！2022年中国学生终于可以直接参加BMO了，不需要再参加SMC了。 在2022年以前，想要参加BMO英国数学奥赛，就必须参加SMC(Senior Maths Challenge)并且取得优异成绩，但是SMC不接受个人报名，只能通过注册为U...
FBLA商赛2022报名启动，报名组队的同学看过来！
FBLA（Future Business Leaders of America）始于1942年，迄今为止已有超过70年历史，由哥伦比亚大学的教授发起，是全球最大的学生职业发展组织和商业素养教育组织之一，也是美国高中影响力最大的商科赛事，堪称...
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...
2022-23STS再生元科学天才奖报名已开启，还有一个月截止报名！
Regeneron Science Talent Search再生元科学天才奖(简称：Regeneron STS)是美国最负盛名的科学学术活动，为高中生提供了与专业科学家、国家级评审团交流自己原创性研究的机会。 该学术活动每年有来自全国各地的超...
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...
