AQA A Level Physics复习笔记5.3.1 Resistors in Series & Parallel
Resistors in Series & Parallel Resistors in Series When two or more components are connected in series: The combined resistance of the components is equal to the sum of individual resist...
AQA A Level Physics复习笔记5.2.4 Required Practical: Investigating Resistivity
Required Practical: Investigating Resistivity Aims of the Experiment The aim of the experiment is to determine the resistivity of a 2 metre constantan wire Variables: Independent variable = ...
AQA A Level Physics复习笔记5.2.3 Superconductivity
Superconductivity All materials have some resistivity - even good electrical conductors such as copper and silver Resistance means that when electricity flows through a material, it heats up...
IB DP Maths: AA HL复习笔记1.4.1 Proof
What is proof? Proof is a series of logical steps which show a result is true for all specified numbers ‘Seeing’ that a result works for a few numbers is not enough to show that it will work for al...
IB DP Maths: AA HL复习笔记1.3.5 Compound Interest & Depreciation
What is compound interest? Interest is a small percentage paid by a bank or company that is added on to an initial investment Interest can also refer to an amount paid on a loan or debt, however IB...
IB DP Maths: AA HL复习笔记1.3.4 Applications of Sequences & Series
Many real-life situations can be modelled using sequences and series, including but not limited to: patterns made when tiling floors; seating people around a table; the rate of change of a populati...
IB DP Maths: AA HL复习笔记1.3.3 Geometric Sequences & Series
What is a geometric sequence? In a geometric sequence, there is a common ratio, r, between consecutive terms in the sequence For example, 2, 6, 18, 54, 162, … is a sequence with the rule ‘start at ...
IB DP Maths: AA HL复习笔记1.3.2 Arithmetic Sequences & Series
What is an arithmetic sequence? In an arithmetic sequence, the difference between consecutive terms in the sequence is constant This constant difference is known as the common difference, d, of th...
IB DP Maths: AA HL复习笔记1.3.1 Language of Sequences & Series
What is a sequence? A sequence is an ordered set of numbers with a rule for finding all of the numbers in the sequence For example 1, 3, 5, 7, 9, … is a sequence with the rule ‘start at one and add...
