Chapter 1: Physical Quantities, Units and Measurements

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General PhyLseiccsture Physical Quantities & Units ga AS level Me Marline Kurishingal

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Mega Lecture

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For Live Classes, Recorded Lectures, Notes & Past Papers visit:

Mega Lecture

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Physical Quantities

Quantitative versus qualitative

re ? Most observation in physics are quantitative tu ? Descriptive observations (or qualitative) are usually imprecise

Qualitative Observations

c How do you measure Mega Le artistic beauty?

Quantitative Observations What can be measured with the

instruments on an aeroplane?

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Physical Quantities

re ? A physical quantity is one that can be measured

tu and consists of a magnitude and unit.

ec 70 L km/h

4.5 m

Measuring length

ga SI units are

used in

e Scientific M works

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