Physical Quantities and Measurement Systems
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Physical Quantities and Measurement Systems

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@WealthyPoplar

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Questions and Answers

What is the fundamental unit of length in the given conversion of miles per hour to meters per second?

  • Meter (m) (correct)
  • Mile (mi)
  • Foot (ft)
  • Kilometer (km)

    • What is the dimensional analysis of the equation d = vt^2, where d is distance, v is velocity, and t is time?

  • [L] = [LT^2]
  • [L] = [LT^-1][T^2] (correct)
  • [L] = [LT][T]
  • [L] = [L^2T^-2]

    • Which of the following conversions is an example of dimensional analysis?

  • Converting miles per hour to meters per second (correct)
  • Converting kilograms to grams
  • Converting Celsius to Fahrenheit
  • Converting liters to milliliters

    • What is the unit of time in the given conversion of miles per hour to meters per second?

    <p>Seconds (s)</p> Signup and view all the answers

    What is the importance of dimensional analysis in equations?

    <p>To ensure the dimensions on the left side are equal to the right side</p> Signup and view all the answers

    What is the result of the conversion of 1 mile per hour to meters per second using dimensional analysis?

    <p>0.477 m/s</p> Signup and view all the answers

    What is the dimensional analysis of the equation v = d/t, where v is velocity, d is distance, and t is time?

    <p>[LT^-1] = [L][T^-1]</p> Signup and view all the answers

    What is the purpose of cross-multiplication in dimensional analysis?

    <p>To cancel out units</p> Signup and view all the answers

    Which of the following equations is dimensionally incorrect?

    <p>d = vt^2</p> Signup and view all the answers

    What is the benefit of using dimensional analysis in problem-solving?

    <p>It helps to ensure the correctness of the equation</p> Signup and view all the answers

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