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Dimensional Analysis. What is dimensional analysis?. Also called factor label or unit conversions. Taking the units you are given (grams, feet, meters, etc.) and translating to other units. Example: How many feet are in 30 meters ?. What is dimensional analysis?. Basic math
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What is dimensional analysis? • Also called factor label or unit conversions. • Taking the units you are given (grams, feet, meters, etc.) and translating to other units. • Example: • How many feet are in 30 meters?
What is dimensional analysis? • Basic math • Multiplication • Division • Setting up an equation using what you know to get the desired units as an answer.
Example 1 • How many seconds are in one day?
Example 1 • How many seconds are in one day? • 60 seconds in 1 minute • 60 minutes in 1 hour • 24 hours in 1 day
Example 2 • How many hours are in a year?
How about going for hours per year, using the fact there are 365 days in a year?
How about going for hours per year, using the fact there are 365 days in a year?
Example 3 • How many inches are in 6 feet?
Example 3 • How many inches are in 6 feet? 6 feet
Example 3 • How many inches are in 6 feet? 6 feet 72 in
Example 4 • How many meters are in 66 feet? • 1 meter = 3.3 feet
Example 4 • How many meters are in 66 feet? • 1 meter = 3.3 feet
Example 4 • How many meters are in 66 feet? • 1 meter = 3.3 feet 20 m
Example 1 • How much does a 30mg pill weigh in decigrams?
Example 1 • How much does a 30mg pill weigh in decigrams? 0.3 dg
Example 2 • How many kilometers did I run if I ran 400 meters?
Example 2 • How many kilometers did I run if I ran 400 meters? 0.4 km
Example 3 • Your cross country skis are 2100 mm long. What is their length hm?
Example 3 • Your cross country skis are 2100 mm long. What is their length hm? 0.21 hm