Download presentation
Presentation is loading. Please wait.
1
Conversion Factor 1 ft = 12 in 1 hr = 60 min
A conversion factor is a ratio derived from the equality between two different units that can be used to convert from one unit to the other. Examples: 1 ft = 12 in 1 hr = 60 min
2
I. English-to-English conversion factors
Dimensional Analysis I. English-to-English conversion factors volume mass length 1 cup = 8 fl oz 1 ft = 12 in 1 lb = 16 oz 1 pt = 2 cups 1 yd = 3 ft 1 ton = 2,000 lbs 1 qt = 2 pts 1 mi = 5,280 ft 1 gal = 4 qts
3
I. English-to-English conversion factors (cont’d)
Dimensional Analysis I. English-to-English conversion factors (cont’d) Example 1: How many yards are in 2.65 miles? 4,664 applying sig fig rules : 4,660 yd
4
II. Metric-to-Metric conversion factors
Dimensional Analysis II. Metric-to-Metric conversion factors Metric conversions can be made by moving the decimal –OR– they can be converted using factor-label method. Example 2: How many centimeters are in 7.65 kilometers? 765,000 answer: 765,000 cm
5
III. English-to-Metric / Metric-to-English conversion factors
Dimensional Analysis III. English-to-Metric / Metric-to-English conversion factors There are NUMEROUS conversion factors for English-Metric conversions, but the simplest method is to know ONE conversion for each standard unit. mass length volume 1 lb = 454 g 1 in = 2.54 cm 1 qt = 946 mL
6
III. English-to-Metric / Metric-to-English conversion factors
Dimensional Analysis III. English-to-Metric / Metric-to-English conversion factors Example 3: How many feet are in 5.0 kilometers? 16, answer: 16,000 ft
7
III. English-to-Metric / Metric-to-English conversion factors
Dimensional Analysis III. English-to-Metric / Metric-to-English conversion factors Example 4: I weigh 175 pounds; convert this to kilograms. 79.45 answer: 79.5 kg
8
IV. Simultaneous conversions (rate conversions)
Dimensional Analysis IV. Simultaneous conversions (rate conversions) Example 5: I can run 9.10 mi/hr; convert this to ft/sec. (hint: convert one unit at a time…) answer: 13.3 ft/sec
9
IV. Squared (cubed) dimension conversions
Dimensional Analysis IV. Squared (cubed) dimension conversions Example 6: A table has a surface area of 1.25 m2; what is the table’s surface area in in2. answer: 1,940 in2
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.