Edexcel IGCSE Chemistry 复习笔记 1.9.2 Electrolysis Experiments
Edexcel IGCSE Chemistry 复习笔记 1.9.2 Electrolysis Experiments Electrolysis of Molten Compounds Lead(II) bromide is a binary ionic compound meaning that it is a compound consisting of just ...
AQA A Level Physics复习笔记8.3.6 Nuclear Radius Equation
Nuclear Radius Values The radius of some nuclei are shown in the table below: In general, nuclear radii are of the order 10–15 m or 1 fm The nuclear radius, R, varies with nucleon number, A ...
AQA A Level Physics复习笔记8.3.5 Closest Approach Estimate
Closest Approach Estimate The Coulomb equation can be used to give an estimate for the radius of a nucleus When the alpha particle reaches its closest approach (to the nucleus), all of its k...
美国网申系统的分类和申请批次的内容！
2022年秋季申请季已经全面拉开帷幕，美国作为留学生热门选择的求学地之一，与往年不同的是，考虑到疫情等原因，一直以来鲜有变化的申请截止日期、申请要求等，今年都发生了重大变化。今天一起来了解美国网申系统...
AQA A Level Physics复习笔记8.3.4 Nuclear Radius
Estimating Nuclear Radius Closest Approach Method In the Rutherford scattering experiment, alpha particles are fired at a thin gold foil Some of the alpha particles are found to come straigh...
AQA A Level Physics复习笔记8.3.3 Nuclear Excited States
Nuclear Excited States In the same way that electrons can exist in excited states, nuclei can also exist in excited states After an unstable nucleus emits an alpha particle, beta particle or...
AQA A Level Physics复习笔记8.3.2 Decay Equations
Changes in N and Z by Radioactive Decay There are four reasons why a nucleus might become unstable, and these determine which decay mode will occur Too many neutrons Decays through beta-minu...
IB DP Maths: AA HL复习笔记4.6.3 Standardisation of Normal Variables
Standard Normal Distribution What is the standard normal distribution? The standard normal distribution is a normal distribution where the mean is 0 and the standard deviation is 1Why is the standa...
不参与U.S.News排名，但实力强劲的美国大学有哪些？
在美国有相当一部分院校是不参与U.S.News排名的，原因各不相同，而作为申请者，如果在选校时忽略了这些“无名”但实力强劲的学校，很有可能会与自己真正的梦校擦肩而过。今天小编来聊聊那些长期被忽视，但学术实力...
