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First teaching 2023

First exams 2025

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Using Dimensional Analysis (HL IB Physics)

Revision Note

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Ann H

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Ann H

Expertise

Physics

Using Dimensional Analysis

  • An important skill is to be able to check the homogeneity of physical equations using the SI base units
    • This is also known as dimensional analysis
  • The units on either side of the equation should be the same
  • To check the homogeneity of physical equations:
    • Check the units on both sides of an equation
    • Determine if they are equal
    • If they do not match, the equation will need to be adjusted

Worked example

Homogeneity of Physical Equations, downloadable AS & A Level Physics revision notes

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Ann H

Author: Ann H

Ann obtained her Maths and Physics degree from the University of Bath before completing her PGCE in Science and Maths teaching. She spent ten years teaching Maths and Physics to wonderful students from all around the world whilst living in China, Ethiopia and Nepal. Now based in beautiful Devon she is thrilled to be creating awesome Physics resources to make Physics more accessible and understandable for all students no matter their schooling or background.