高含金量生物競賽BBO和USABO難度如何？哪個比賽更適合你？
近年來，醫學、生物醫學、生物科學、生物化學等作為熱門專業，備受不少家長和同學歡迎。 不論藤校還是G5，對于生物學相關的理工科專業，參加國際生物學術活動都能為申請增色不少。 然而與生物相關的國際學術活動...
CIE A Level Maths: Mechanics復習筆記2.2.1 Using Calculus in 1D
Using Calculus in 1D How is calculus used in kinematics? s,?v?and?a?are all functions of time Velocity,?v, is the rate of change of displacement,?s, with respect to time Acceleration,?a, is the rat...
CIE A Level Maths: Mechanics復習筆記2.1.3 Drawing Travel Graphs
Drawing Travel Graphs How do I draw a displacement-time graph or a velocity-time graph? You may be asked to draw a?displacement-time?graph or a?velocity-time?graph You will be given information abo...
CIE A Level Maths: Mechanics復習筆記2.1.2 Velocity-Time Graphs
Velocity-Time Graphs What is a velocity-time graph? Velocity- time?graphs show the?velocity?of an object as it moves in a?straight line They show?velocity?(on the vertical axis) against?time?(on th...
CIE A Level Maths: Mechanics復習筆記2.1.1 Displacement-Time Graphs
Displacement-Time Graphs What is a displacement-time graph? Displacement-time?graphs show the?displacement?of an object from a?fixed origin?as it moves in a?straight line They show?displacement?(on...
CIE A Level Maths: Mechanics復習筆記1.1.5 Modelling Assumptions
Modelling Assumptions What is modelling in Mechanics? Mechanics uses?modelling?to solve problems in real life situations We use?assumptions?to simplify real life problems in order to turn them into...
CIE A Level Maths: Mechanics復習筆記1.1.4 Types of Force
Types of Force What is a force? A force is a?vector?quantity, it has both?magnitude?and?direction A force is a push or a pull on an object A force is measured in?Newtons In A level mathematical mod...
CIE A Level Maths: Mechanics復習筆記1.1.3 Derived Units
Derived Units What are derived units? Derived units for quantities such as velocity, acceleration and force etc. are combinations of S.I. units Speed?or?Velocity?= distance ÷ time?=?m/s or m s-1?(V...
CIE A Level Maths: Mechanics復習筆記1.1.2 Fundamental Units
Fundamental Units What are fundamental units? Fundamental units?or?S.I. units?are the international standardised units used around the world The three main units you will be using are: Length?measu...
CIE A Level Maths: Mechanics復習筆記1.1.1 Scalars & Vectors
Scalars & Vectors Mechanics uses a variety of different scalar and vector quantities. What are scalars? Scalars?are quantities without direction, they only have a?size (magnitude) e.g. a?speed?...
CIE A Level Physics復習筆記25.2.3 Hubble's Law & the Big Bang Theory
Hubble's Law & the Big Bang Theory Edwin Hubble investigated the light spectra emitted from a large number of galaxies He used?redshift?data to determine the recession velocities of these galax...
CIE A Level Physics復習筆記25.2.2 Doppler Redshift
Redshift of EM Radiation Recall the Doppler effect is defined as: The apparent change in wavelength or frequency of the radiation from a source due to its relative motion away from or toward the ob...
