Physical Quantities and Measurements
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Physical Quantities and Measurements

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Questions and Answers

How can the numerical value expressed in an arbitrary unit be obtained?

  • ${ Z } = Z / [ Z ]$ (correct)
  • ${ Z } = Z \times [ Z ]$
  • ${ Z } = Z - [ Z ]$
  • ${ Z } = Z + [ Z ]$

    • What is the expression for the value of a physical quantity Z?

  • $Z = \{ Z \} - [ Z ]$
  • $Z = \{ Z \} + [ Z ]$
  • $Z = \{ Z \} / [ Z ]$
  • $Z = \{ Z \} \times [ Z ]$ (correct)

    • In formulas, how is the unit [Z] treated?

  • As a constant value
  • As an exponent of the numerical value
  • As a specific magnitude of a kind of physical dimension (correct)
  • As a variable to be solved

    • What is the convention used to express quantities referred to as?

    <p>Quantity calculus</p> Signup and view all the answers

    What does ISO 80000-1 specify about expressing the magnitude of a physical quantity?

    <p>It should be expressed as a comparison to a unit of that quantity</p> Signup and view all the answers

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