S13Phys2BaLec21A

# We will start using the clickers at the start of our

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We will start using the clickers at the start of our second week.

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Administrativa Your grade will be determined by using the following tentative scale: Between 85% and 100% => A Between 70% and 85% => B Between 55% and 70% => C Between 40% and 55% => D Grade below 40% => F Your grade will be calculated by: 60% Quizzes + 40% Final + 5% EC (clickers).
Academic Integrity I take academic integrity very seriously. Research into the field shows that violating academic integrity guidelines only postpones the inevitable. This applies to exams, clickers, and HW (in theory). Your first reading assignment is to read the following online document (first page) by Monday: Appendix2.pdf Also, along those same lines I expect you to be respectful of others during lecture. If you can’t, then you will be asked to leave lecture.

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Standards/Units We will be mostly using SI units in this class. The obvious advantage of using the SI units is that different units increase by power of tens. It is much easier to remember that there are 1,000 mL in 1 L instead of 4 gills in 1 pint. Become familiar with common prefixes, such as: femto => 10 -15 nano => 10 -9 micro => 10 -6 milli => 10 -3 centi => 10 -2 kilo => 10 3 Mega => 10 6 giga => 10 9 tera => 10 12 exa => 10 18
Unit Conversions Sometimes you will need to switch between units. Conversion factors with unit value allow you to change the units of a quantity without changing its physical value. For example, changing 4.50 g/cm 3 to ?? kg/m 3

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Unit Conversions How important are unit conversions? In 1999, \$125 millon Mars Climate Orbiter was approaching Mars. Contact was lost as it reached Mars. The Orbiter passed 57 km above the Mars surface, instead of the intended 147 km.
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• Spring '08
• schuller
• Physics, International System of Units, Conversion of units, Mayer Hall

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