Reading Questions: Chap 2 Quantities

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Reading Question 2. 1 The text distinguishes between a “unit” and a “dimension.” Explain in your own words how a dimension differs from a unit. Why is it possible to have multiple different units that all correspond to the single dimension of “Length”?

Reading Question 2. 2 The chapter states that “per” is shorthand for a specific mathematical operation. What is that operation?

Reading Question 2. 3 The text notes that there is no equivalent English word for the operation of multiplication in units. How are units formed by multiplication typically written or spoken compared to those formed using “per”?

Reading Question 2. 4 For each of the following four dimensions, list at least three different unit names that correspond to that dimension:

  1. Length (e.g., meter…)
  2. Time
  3. Volume
  4. Mass

Reading Question 2. 5 The text refers to a conversion factor, such as (60 seconds) / (1 minute), as a “flavor of one.” Explain the reasoning behind calling this fraction “one,” even though the numbers 1 and 60 are clearly different.