Yesterday, we learned about dimensional analysis, and this was basically a review of what I have learned in math classes. Dimensional analysis is basically a way to convert one quantity to another quantity with a different unit of measurement. Some fun facts are that significant figures are infinite when the number is an exact quantity (1 in = 2.54 cm). The way to end up with the correct desired unit and have the starting unit cancelled out is to put the starting unit measurement in the denominator so it cancels and put desired unit in numerator so the ending calculation contains this. It may take a series of multiplication steps, but the same rule will be followed.
Here is a couple links to help with dimensional analysis:
http://www.chem.tamu.edu/class/fyp/mathrev/mr-da.html
http://www.alysion.org/dimensional/fun.htm
This blog was helpful since I missed the day we took notes on this so it helped me understand what we did. The websites were also helpful about understanding it better. I would have liked to see more examples so people have a visual on what you are talking about.
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