IB DP Physics: SL复习笔记2.1.3 Acceleration
Acceleration Acceleration is defined as the rate of change of velocity In other words, it describes how much an object's velocity changes every second The equation below is used to calculate the av...
IB DP Physics: SL复习笔记2.1.2 Speed & Velocity
Speed & Velocity Speed The speed of an object is the distance it travels every second Speed is a scalar quantity This is because it only contains a magnitude (without a direction) The average s...
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 ...
