IB DP Physics: SL复习笔记2.1.1 Distance & Displacement
Distance & Displacement Distance is a measure of how far an object travels It is a scalar quantity - in other words, the direction is not important The athletes run a total distance of 300 m Co...
IB DP Physics: SL复习笔记1.3.3 Solving Vector Problems
Solving Vector Problems In physics, vectors appear in many different topic areas Specifically, vectors are often combined and resolved to solve problems when considering motion, forces, and momentu...
IB DP Physics: SL复习笔记1.3.2 Combining & Resolving Vectors
Combining & Resolving Vectors Vectors are represented by an arrow The arrowhead indicates the direction of the vector The length of the arrow represents the magnitude Combining Vectors Vectors ...
IB DP Physics: SL复习笔记1.3.1 Vector & Scalar Quantities
Vector & Scalar Quantities A scalar is a quantity which only has a magnitude (size) A vector is a quantity which has both a magnitude and a direction For example, if a person goes on a hike in ...
IB DP Physics: SL复习笔记1.2.3 Determining Uncertainties from Graphs
Error Bars The uncertainty in a measurement can be shown on a graph as an error bar This bar is drawn above and below the point (or from side to side) and shows the uncertainty in that measurement ...
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...
