CIE A Level Physics復習筆記2.1.2 Motion Graphs
Motion Graphs Three types of graph that can represent motion are?displacement-time?graphs,?velocity-time?graphs and?acceleration-time?graphs On a?displacement-time graph… slope?equals?velocity the?...
CIE A Level Physics復習筆記2.1.1 Displacement, Velocity & Acceleration
Defining Displacement, Velocity & Acceleration Scalar quantities Remember scalar quantities only have a magnitude (size) Distance:?the total length between two points Speed:?the total distance ...
CIE A Level Physics復習筆記1.2.3 Measurement Techniques
Measurement Techniques Common instruments used in Physics are: Metre rules - to measure distance and length Balances - to measure mass Protractors - to measure angles Stopwatches - to measure time ...
CIE A Level Physics復習筆記1.2.2 Calculating Uncertainties
Calculating Uncertainty There is always a degree of uncertainty when measurements are taken; the uncertainty can be thought of as the difference between the?actual?reading taken (caused by the equi...
2022軟科世界大學學術排名最新發布！
近日，“2022軟科世界大學學術排名”最新發布，排名展示了全球領先的1000所研究型大學。 中國內地共有163所大學上榜，其中8所位列世界百強，比去年增加1所。清華大學表現最佳，排名全球第26，較去年上升2名；北京大...
CIE A Level Physics復習筆記1.2.1 Errors & Uncertainties
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, the...
CIE A Level Physics復習筆記1.1.4 Scalars & Vectors
What are Scalar & Vector 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 ...
CIE A Level Physics復習筆記1.1.3 Homogeneity of Physical Equations & Powers of Ten
Homogeneity of Physical Equations An important skill is to be able to check the?homogeneity?of physical equations using the SI base units The units on either side of the equation should be the same...
CIE A Level Physics復習筆記1.1.2 SI Units
SI Base Quantities There is a seemingly endless number of units in Physics These can all be reduced to six base units from which every other unit can be derived These seven units are referred to as...
CIE A Level Physics復習筆記1.1.1 Physical Quantities
What is a Physical Quantity? Speed and velocity are examples of physical quantities; both can be measured All physical quantities consist of a numerical magnitude and a unit In physics, every lette...
CIE A Level Chemistry復習筆記8.1.7 Deuterated Solvents in Proton NMR
Deuterated Solvents in Proton NMR When samples are analysed through NMR spectroscopy, they must be dissolved in a solvent Tetramethylsilane (TMS) is a commonly used solvent in NMR Despite TMS showi...
CIE A Level Chemistry復習筆記8.1.6 Use of Tetramethylsilane (TMS)
Use of Tetramethylsilane (TMS) In NMR spectroscopy, Tetrametylsilane (TMS) is used as a reference compound The organic compound is dissolved in TMS before being introduced to the magnetic field of ...
