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lecture 2 - Archimedes' principle

lecture 2 - Archimedes' principle - Announcements Prayer...

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Announcements 1/7/11 Prayer Two signup sheets going around (again).  a. Check your info / Add your info If you weren’t here on Monday: a. Read the syllabus, talk to students who were here last  time b. Look at website:  http://www.physics.byu.edu/faculty/colton/courses/phy123- winter11/ (especially the “How to get started” section, and lecture  notes from Wednesday’s class) Lab 1 starts tomorrow The first homework assignment is due tonight! Remember: my office hours are right after class, MWF, in  the underground lab under the skylight; TA’s office hours are  4 – 5:30 pm, MWF, same place
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Thought question (ungraded): For a longer canyon behind the dam  (red arrow length), the dam…  a. can be weaker b. must be stronger c. can be the same
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Reading quiz (graded): Ralph measures the pressure in his flat tire  with a standard automotive pressure gauge.  The gauge reads zero. Is the pressure  inside the tire 0 atm?  a. yes b. no
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Demo Bed of nails Reverse tug of war
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Barometer How to read?
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