Edexcel IGCSE Maths 復習筆記 1.15.1 Best Buy
Edexcel IGCSE Maths 復習筆記 1.15.1 Best Buy How do you tackle “Best Buy” problems? You may need a range of skills… Decide on a suitable comparison?– eg total cost, cost/year, cost/m2 etc) Be consi...
AQA A Level Physics復習筆記2.5.1 Collisions of Electrons with Atoms
Ionisation & Excitation Ionisation?of an atom is: The removal, or addition, of an electron from, or to, an atom when given sufficient energy Excitation?of electrons is: When an electron ...
AQA A Level Physics復習筆記2.4.1 The Electronvolt
The Electronvolt The electronvolt is a unit which is commonly used to express very small energies This is because quantum energies tend to be much smaller than 1 Joule The electronvolt is de...
AQA A Level Physics復習筆記2.3.1 The Four Fundamental Interactions
The Four Fundamental Interactions There are four fundamental interactions, or fundamental forces, that exist. These are: Gravity Electromagnetism Strong Nuclear (or Strong Interaction) Weak ...
Edexcel IGCSE Maths復習筆記 1.14.1 Exchange Rates
Edexcel IGCSE Maths復習筆記 1.14.1 Exchange Rates Simplifying exchange rate questions Use ratios! Put exchange rates in?ratio?form (use more than one line if necessary) Add lines for prices/costs U...
AQA A Level Physics復習筆記2.2.1 Hadrons
Baryons & Mesons Hadrons Hadrons?are the group of subatomic particles that are made up of quarks Therefore, hadrons can feel the?strong nuclear force There are two classes of hadrons: Ba...
AQA A Level Physics復習筆記2.1.1 Atomic Structure
Atomic Structure The atoms of all elements are made up of three types of particles: protons, neutrons and electrons. Protons and neutrons are found in the nucleus of an atom while electrons ...
AQA A Level Physics復習筆記1.1.1 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 referre...
AQA A Level Physics復習筆記1.2.1 Sources of Uncertainty
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 quanti...
