AQA A Level Physics復習筆記6.1.4 Centripetal Acceleration
Calculating Centripetal Acceleration Centripetal acceleration is defined as: The acceleration of an object towards the centre of a circle when an object is in motion (rotating) around a circ...
AQA A Level Physics復習筆記6.1.3 Angular Speed
Angular Speed Any object travelling in a uniform circular motion at the same speed travels with a?constantly changing velocity This is because it is?constantly changing direction, and is the...
IB DP Maths: AA HL復習筆記1.7.1 Counting Principles
What is meant by counting principles? The fundamental counting principle states that if there are?m?ways to do one thing and?n?ways to do another there are?m?×?n?ways to do?both?things Applying cou...
AQA A Level Physics復習筆記6.1.2 Radians
Radians In circular motion, it is more convenient to measure angular displacement in units of?radians?rather than units of degrees The?angular displacement?(θ) of a body in circular motion i...
AQA A Level Physics復習筆記6.1.1 Circular Motion
Circular Motion Velocity?and?acceleration?are both?vector?quantities An object in?uniform circular motion?has a constant?linear?speed However, it is?continuously changing direction.?Since ve...
IB DP Maths: AA HL復習筆記1.6.2 Extension of The Binomial Theorem
How do I use the binomial theorem for fractional and negative indices? How do we use the binomial theorem to estimate a value? The binomial expansion can be used to form an approximation for a valu...
AQA A Level Physics復習筆記5.4.2 Required Practical: Investigating EMF & Internal Resistance
Required Practical: Investigating EMF & Internal Resistance Aims of the Experiment The overall aim of the experiment is to investigate the relationship between e.m.f and internal resista...
AQA A Level Physics復習筆記5.4.1 Electromotive Force & Internal Resistance
Electromotive Force When charge passes through a power supply such as a battery, it?gains?electrical energy The?electromotive force (e.m.f)?is defined as: The amount of chemical energy conve...
AQA A Level Physics復習筆記5.3.4 Potential Divider Circuits
Potential Divider Circuit When two resistors are connected in series, through Kirchhoff’s Second Law, the potential difference across the power source is divided between them Potential divid...
