ncreasing & Decreasing Functions What are increasing and decreasing functions? A function, f(x), is?increasing?if?f'(x)?>?0 This means the value of the function (‘output’) increases as x inc...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 4.1.3 Efficiency Efficiency The efficiency of a system is a measure of how well energy is transferred in a system Efficiency is defined as: The ratio of...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 4.1.2 Conservation of Energy Conservation of Energy The principle of conservation of energy states that: Energy cannot be created or destroyed, it can o...
Introduction to Derivatives Before introducing a?derivative, an understanding of a?limit?is helpful What is a limit? What might I be asked about limits? You may be asked to use your GDC to plot the...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 4.1.1 Energy Stores & Transfers Energy Stores & Transfers Energy can be stored in different ways, and there are changes in the way it is stored when a ...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 3.3.4 Pitch & Loudness Pitch The?pitch?of a sound is related to the?frequency?of the vibrating source of sound waves If the?frequency?of vibration is?high,...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 3.3.3 Core Practical: Using an Oscilloscope Core Practical 7: Using an Oscilloscope Aim of the Experiment The aim of this experiment is to investigate the freq...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 3.3.2 Sound & Oscilloscopes Sound & Oscilloscopes An?oscilloscope?is a device that can be used to study a rapidly?changing?signal, such as: A?sound?wav...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 3.3.1 Core Practical: Investigating the Speed of Sound Core Practical 6: Investigating the Speed of Sound Equipment List Resolution?of measuring equipment: Tru...
