IB DP Maths: AA HL复习笔记3.9.4 The Scalar Product
The Scalar ('Dot') Product What is the scalar product? The scalar product (also known as the dot product) is one form in which two vectors can be combined together The result of taking the scalar p...
IB DP Maths: AA HL复习笔记3.9.3 Magnitude of a Vector
Magnitude of a Vector How do you find the magnitude of a vector? The magnitude of a vector tells us its size or length For a displacement vector it tells us the distance between the two points For ...
GCSE考试很难吗？2021年最难的5道数学真题解析！
GCSE考试很难吗？本期我们来看看英国TS网站提到的2021年最难的5道GCSE数学真题解析！TS表示虽然他们已经尽量在学生中调查最难的GCSE数学题了，但是每个人在GCSE数学上的优点和缺点的都不同，所以不存在真正意义上...
AQA A Level Physics复习笔记7.6.1 Capacitance
Capacitance Capacitors are electrical devices used to store energy in electronic circuits, commonly for a backup release of energy if the power fails They are in the form of two conductive m...
IB DP Maths: AA HL复习笔记3.9.2 Position & Displacement Vectors
Adding & Subtracting Vectors How are vectors added and subtracted numerically? To add or subtract vectors numerically simply add or subtract each of the corresponding components In column vecto...
AQA A Level Physics复习笔记7.5.3 Work Done on a Charge
Work Done on a Charge When a mass with charge moves through an electric field, work is done The work done in moving a charge q is given by: ∆W = q∆V Where: ∆W = change in work done (J) q = c...
AQA A Level Physics复习笔记7.5.2 Graphical Representation of Electric Potential
Graphical Representation of Electric Potential Electric field strength, E and the electric potential, V can be graphically represented against the distance from the centre of a charge, r E, ...
AQA A Level Physics复习笔记7.5.1 Electric Potential
Electric Potential In order to move a positive charge closer to another positive charge, work must be done to overcome the force of repulsion between them Similarly, to move a positive charg...
IB DP Maths: AA HL复习笔记3.9.1 Introduction to Vectors
Scalars & Vectors What are scalars? Scalars are quantities without direction They have only a size (magnitude) For example: speed, distance, time, mass Most scalar quantities can never be negat...
