AQA A Level Physics復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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...
AQA A Level Physics復習筆記7.4.7 Comparing Gravitational & Electrostatic Forces
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...
Edexcel IGCSE Chemistry 復習筆記 1.5.2 Calculate Relative Mass
Edexcel IGCSE Chemistry 復習筆記 1.5.2 Calculate Relative Mass Relative Formula Mass & Relative Molecular Mass We have seen previously that the symbol for the relative atomic mass is?Ar ...
Edexcel IGCSE Chemistry 復習筆記 1.5.1 Word & Chemical Equations
Edexcel IGCSE Chemistry 復習筆記 1.5.1 Word & Chemical Equations Writing Equations Nothing created - nothing destroyed However, the same atoms are always present before and after reaction They ...
Edexcel IGCSE Chemistry 復習筆記 1.4.4 Electronic Configuration & Reactivity
Edexcel IGCSE Chemistry 復習筆記1.4.4 Electronic Configuration & Reactivity Similar Chemical Properties Chemical properties of elements in the same group Elements in the same group in th...
AQA A Level Physics復習筆記7.4.7 Comparing Gravitational & Electrostatic Forces
Gravitational v Electrostatic Forces The similarities and differences between gravitational and electrostatic forces are listed in the table below: Table Comparing G and E Fields The ...
AQA A Level Physics復習筆記7.4.6 Radial Electric Field
Electric Field of a Point Charge The?electric field strength?describes how strong or weak an electric field is at that point A?point charge?produces a?radial?field A charge sphere also acts ...
