Edexcel IGCSE Physics 复习笔记 4.1.1 Energy Stores & Transfers
Edexcel IGCSE Physics 复习笔记 4.1.1 Energy Stores & Transfers Energy Stores & Transfers Energy can be stored in different ways, and there are changes in the way it is stored when a ...
Edexcel IGCSE Physics 复习笔记 4.1.1 Energy Stores & Transfers Energy Stores & Transfers Energy can be stored in different ways, and there are changes in the way it is stored when a ...
Edexcel IGCSE Physics 复习笔记 3.3.4 Pitch & Loudness Pitch The pitch of a sound is related to the frequency of the vibrating source of sound waves If the frequency of vibration is high,...
Edexcel IGCSE Physics 复习笔记 3.3.3 Core Practical: Using an Oscilloscope Core Practical 7: Using an Oscilloscope Aim of the Experiment The aim of this experiment is to investigate the freq...
Edexcel IGCSE Physics 复习笔记 3.3.2 Sound & Oscilloscopes Sound & Oscilloscopes An oscilloscope is a device that can be used to study a rapidly changing signal, such as: A sound wav...
Edexcel IGCSE Physics 复习笔记 3.3.1 Core Practical: Investigating the Speed of Sound Core Practical 6: Investigating the Speed of Sound Equipment List Resolution of measuring equipment: Tru...
Edexcel IGCSE Physics 复习笔记 3.2.6 Total Internal Reflection Total Internal Reflection Sometimes, when light is moving from a denser medium towards a less dense one, instead of being refracted, a...
今年的AP考试可谓是一波三折,大陆地区一些城市由于疫情AP考试取消。尽管如此,全球AP考试依然进行,AP成绩也在最近公布分数,我们为大家汇总了今年38门考试中,20余门热门AP科目5分率与去年的对比变化。 1AP生物...
Two-Sample Tests What is a t-test? A t-test is used to compare the means of two normally distributed populations In the exam the population variance will always be unknown What assumptions are need...
Chi-Squared GOF: Uniform What is a chi-squared goodness of fit test for a given distribution? What are the steps for a chi-squared goodness of fit test for a given distribution? Worked Example Chi-...
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