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Unformatted text preview: , . .. ..J . Nmne ______________________ Physics Department Duquesne University . PH211-01 GAP I , " , " '. Exam 3 'December 9, 2008 SHOW YOUR WORK ON ALL PROBLEMS, INCLUDING MULTIPLE CHOICE. TIris test covers Chapters 8 - 10. There are 5 multiple-choice questions worth 5 points-each, and 5 , long-answer questions worth 15 points each. There are 100 points possible. Partial credit will be given, but only if you. S~ow your work and yourreasomng is clear!!! i Moments of inertia - 1. solid disk (about an axis through its center and perpendicular to the plane ofthe disk): 1 = Y, MR' 2, rod (about an axis through its 'center and perpendicular to it) 1=1/12 MR' , 1. Two particles interact by conservative forces and-no other forces act. They complete round . ~ trips, endinS,at the points -where they started, OV ,e, this trip: C<n~y",,*,v. ---->,Ie" ~o' : 6U::'O ~ ,,-"'t>-,-,;. $~ Ai<-=-" , -- I - ~ ~~~ ) A) the total kinetic energy might have a different value at the beginning and end - B) the total potential energy might have a differnt value at the beginning and end I C) the total mechtmical energy might bave a diff~~eDt value at the beginning and end t D the total linear momenturi:l might have different ' values at the beginning and end i r E) none ofthe above . At! = 0 ~") ~~ ~~~t- ~ 0 ~ sus:~ t .' ' I ,- 2. As a particle moves aloilg the x axis it)s acted 00 by a conservative force. Tb,e potential . i , energy is shown below as a function of the coordinate x of the particle. Rank the labeled tegions accon;iuw to.,t.he tI}agnitude ofthe force,least to ~est. ,:, I f , If \ ~ 5 1o f>t- 2>( = 0 [J(.) f--'"\...
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This note was uploaded on 09/06/2010 for the course PHYS 211 taught by Professor Cohen during the Fall '10 term at Duquesne.
- Fall '10