Edexcel IGCSE Physics 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 3.2.6 Total Internal Reflection Total Internal Reflection Sometimes, when light is moving from a denser medium towards a less dense one, instead of being refracted, a...
Two-Sample Tests What is a?t-test? A?t-test is used to?compare the means?of?two normally distributed?populations In the exam the?population variance will always be unknown What assumptions are need...
Chi-Squared GOF: Uniform What is a chi-squared goodness of fit test for a given distribution? What are the steps for a chi-squared goodness of fit test for a given distribution? Worked Example Chi-...