Base Units of Measurement Quiz
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Questions and Answers

Which of the following is considered a base unit in the SI system?

  • Meter (correct)
  • Newton
  • Joule
  • Coulomb

    • What is a unit multiple?

  • A unit that can be expressed in terms of others
  • A submultiple of a given unit
  • A unit prefix
  • An integer multiple of a given unit (correct)

    • What is a base quantity in the context of measurement?

  • A physical quantity that can be expressed in terms of others
  • An explicitly designated unit
  • One of a conventionally chosen subset of physical quantities (correct)
  • A derived quantity involving different units

    • What does a coherent derived unit involve?

    <p>No conversion factors</p> Signup and view all the answers

    Which one of the following is a derived unit?

    <p>Newton</p> Signup and view all the answers

    What are unit prefixes commonly based on?

    <p>Base-10 or base-2 powers</p> Signup and view all the answers

    Which of the following is NOT one of the International System of Units (SI) base units?

    <p>Coulomb</p> Signup and view all the answers

    In the International System of Units (SI), momentum can be expressed in terms of which combination of base units?

    <p>Kilogram and metre per second</p> Signup and view all the answers

    What are the traditional base dimensions of quantity in the International System of Units (SI)?

    <p>Mass, length, time, charge, temperature</p> Signup and view all the answers

    Which fundamental constant relates energy to frequency?

    <p>Planck constant</p> Signup and view all the answers

    According to the text, what is dimensional analysis primarily concerned with?

    <p>Exploring relationships between physical quantities</p> Signup and view all the answers

    Which term refers to a minimal set of units such that every physical quantity can be expressed in terms of this set?

    <p>Base dimensions of quantity</p> Signup and view all the answers

    What is the purpose of retaining fundamental constants as quantities with dimensions?

    <p>To reduce the number of explicit base quantities by one</p> Signup and view all the answers

    Which quantity can be used instead of length as a base dimension of quantity?

    <p>Electric current</p> Signup and view all the answers

    What does Duff argue about dimensional values?

    <p>Only dimensionless values have physical meaning</p> Signup and view all the answers

    What is the ontological issue related to fundamental constants?

    <p>Whether fundamental constants really exist as dimensional or dimensionless quantities</p> Signup and view all the answers

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