1.4 Dimensional analysis

• describe the meaning of dimensional analysis as used in physics
• verify the correctness of formulae using basic units in physics
• appreciate the need of dimensional analysis in formulae and units

“Why should dimensional analysis be conducted before using formulae?”

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1. What dimensional analysis is
   40 min · 1 practice tasks · quiz
   Explain the meaning of dimensional analysis.
2. Base quantities and units
   40 min · 1 practice tasks · quiz
   List the base quantities, units and symbols.
3. Dimensions of common quantities
   40 min · 1 practice tasks · quiz
   Write the dimensions of derived quantities.
4. Dimensions of more quantities
   40 min · 1 practice tasks · quiz
   Write dimensions of further quantities.
5. Verifying a formula
   40 min · 1 practice tasks · quiz
   Verify a formula using dimensions.
6. Worked verifications
   40 min · 1 practice tasks · quiz
   Verify more formulae using dimensions.
7. Uses and limitations
   40 min · 1 practice tasks · quiz
   Describe the uses and limitations of dimensional analysis.
8. Why do it before using formulae
   40 min · 1 practice tasks · quiz
   Review dimensional analysis and answer the key question.