Physical Quantities, Units and Measurment (chapter 1)

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5 Terms

1
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Physical quantity definition

A physical quantity is a quantity that can be measured. It consists of a numerical magnitude and a unit

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Measurement of length tools

  • metre rule and measuring tape (0.1cm or 1mm)

  • Digital Calipers (0.001cm or 0.01mm)

  • Digital micrometer ands screw gauge (0.0001cm or 0.001mm)

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Pendulum

  • Each complete to-and-fro motion is one oscillation

  • The period of a simple pendulum is the time taken for one complete oscillation

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Scalar quantities definition

Scalar quantities are physical quantities that have only magnitude

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Vector quantities

Vector quantities are physical quantities that have both magnitude an direction