Today we went into a number of different scenarios on when numbers are significant (the certain digits and one uncertain digit of a measurement) and when zeroes are not significant (only placeholders). If you understand the intent of the author of the measured value, you can determine what is significant to the measurement and what is needed only for the magnitude of the number. There are a bunch of rules in Chapter 2 of the book on how to determine significant figures and you are free to use them for significant figure determination, but in my opinion, if you understand the intent on how a measured value was written, you will have an eaier time of significant figure dtermination. Significant figure determination is extremely important once we start using measured values in calculations. This will be covered tomorrow (Tuesday, 8/24) and Wednesday, 8/25.
You should finish through significant figure determination, #15 for tonight. We will go over the solutions first thing tomorrow. Please see me if you have any questions on the material.
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