U.S. News排名权威吗？到底还值不值得参考？
每次申请留学之前，选校都是最重要的环节。美国有很多学校，哪所更适合我们？每年选校的时候，大家都会参考世界权威排名。下面就来聊一聊U.S. News排名权威吗？到底还值不值得参考？ U.S .News排名是什么？ U.S.N...
IB DP Physics: SL复习笔记1.2.2 Calculating Uncertainties
Uncertainties Precision Precise measurements are ones in which there is very little spread about the mean value, in other words, how close the measured values are to each other If a measurement is ...
IB DP Physics: SL复习笔记1.2.1 Random & Systematic Errors
Random & Systematic Errors Measurements of quantities are made with the aim of finding the true value of that quantity In reality, it is impossible to obtain the true value of any quantity as t...
IB DP Physics: SL复习笔记1.1.3 Estimating Physical Quantities
Orders of Magnitude When a number is expressed in an order of 10, this is an order of magnitude. Example: If a number is described as 3 × 108 then that number is actually 3 × 100 000 000 The order ...
IB DP Physics: SL复习笔记1.1.2 Using Scientific Notation
Scientific Notation & Metric Multipliers Scientific Notation In physics, measured quantities cover a large range from the very large to the very small Scientific notation is a form that is base...
IB DP Physics: SL复习笔记1.1.1 SI Units
SI Base Quantities International System (S.I.) Units There is a seemingly endless number of units in Physics These can all be reduced to seven base units from which every other unit can be derived ...
IB DP Chemistry: SL复习笔记11.2.6 Analysing Graphs
Analysing Graphs The gradient of a graph can be found by: In the case of a straight line graph: using a triangle and the equation for a straight line In the case of a curve: drawing a tangent to th...
IB DP Chemistry: SL复习笔记11.2.5 Drawing Graphs
Drawing Graphs General guidance on drawing graphs Graphs need to have: Clear title Labelled axes Units on the axes Appropriate linear scales without any jumps This means the plotted graph must occu...
IB DP Chemistry: SL复习笔记11.2.4 Percentage Error
Percentage Error Percentage error is used to express the difference between a final calculated answer and an accepted or literature value It is calculated using the following formula You should be ...
IB DP Chemistry: SL复习笔记11.2.3 Reducing the Impact of Errors
Reducing Errors Random errors can be reduced by repeated trials and measurements Multiple measurements when averaged will reduce the impact of a random error on the average The more readings you ha...
IB DP Chemistry: SL复习笔记11.2.2 Processing Errors
Types of Errors An error is the difference between a value or quantity obtained in an experiment and an accepted or literature value for an experiment There are two types of errors in experiments, ...
哈佛录取率逐年降低，2022年最新录取哈佛优秀文书展示
近日，很多大学都陆续公布了2022年的新生录取数据，哈佛大学也不例外。与往年数据一对比，简直不敢相信自己的眼睛。一起来看看吧~ 申请人数再度攀升，录取率逐年降低 哈佛大学2026届申请数据 申请批次 申请数量 ...
