1. Dimensional Analysis 2.6

2. Dimensional Analysis This is a skill essential to your success in this class!!! Numerous problems can be solved by dimensional analysis. Questions to consider: 1.What do we want to know? 2.What do we know so far? 3.How do we get from what we know to what we want to know? 4.Does it make sense?

3. Unit 1  conversion factor = Unit 2 Conversion factors are built from an equivalence statement which shows the same quantity in two different units. –2.54 cm = 1 in. Conversion factors are ratios of the two parts of the equivalence statement that relate the two units. 2.54 cm 1 in. 1 in. 2.54 cm or

4. Steps to D.A. (SHOW ALL WORK!!!) 1.Find the equivalence statement relating the two units 2.Write a conversion factor from the equivalence statements so that the unwanted unit cancels 3.Multiply 4.Round for sigfigs 5.Does your answer make sense?

5. Convert 36.4 yd into m.

6. 2.5 mi into cm

7. 7.8 lbs = ________ kg 3.5 0.0

8. 88.4 cm = _________in 34.8 0.0

9. 26.2 mi = _________km 42.1 0.0