Dimensional Analysis
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Transcript

  • 1. Dimensional Analysis Aka Factor-Label Method
  • 2. Dimensional Analysis Aka Factor-Label Method Aka Unit Factor Method
  • 3. Ms. L abbreviates it ...
    • Dimensional analysis = dim. Anal.
    • (go ahead, this is your only chance to laugh)‏
  • 4. Guarantee
    • I guarantee ...
    • If you end up with the right units, then you will also end up with the right number* to go with it.
    • Guaranteed!
    • * unless of course you type the wrong numbers in to your calculator.
  • 5. Two Important Things
    • 1. the units on the number
  • 6. Two Important Things
    • 1. the units on the number
    • 2. any conversion factors Example: 1 inch = 2.54 cm
  • 7. Conversion Factor = Fraction = Ratio
    • 1 inch = 2.54 cm can be written as a fraction
  • 8. Conversion Factor = Fraction = Ratio
    • 1 inch = 2.54 cm can be written as a fraction
    • Either side can go on top
  • 9. Conversion Factor = Fraction = Ratio
    • 1 inch = 2.54 cm can be written as a fraction
    • Either side can go on top
    • 1 in/2.54 cm
  • 10. Conversion Factor = Fraction = Ratio
    • 1 inch = 2.54 cm can be written as a fraction
    • Either side can go on top
    • 1 in/2.54 cm
    • 2.54 cm / 1 in
  • 11. Example
    • How many inches are in 6.00 cm?
  • 12. Example 2
    • How many seconds are in 2.0 years?