PHYS 2114 Exam 2 Spring 20091

PHYS 2114 Exam 2 Spring 20091 - ~s Physics 2114 Spring 2009...

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Unformatted text preview: ~s Physics 2114 Spring 2009 Midterm Exam 2 Dr. Bandy Page 2 Directions: There are three problems with multiple parts. Show all work on the exam paper. Do not write on the back of the paper. Be sure to label all vectors and graphs. The value of each problem is labeled. Show the coordinate system when useful. Use brief explanations, show aU ofvour wo~J~, answers must have units where appropriate. v::. (L it 'fo-5 C ) f.(o.,; F Figure 1 Si { z-Gj/(/ I/--~-7 .~ .. ..--;;_ omr;;=.' ,.,..,_ '''"''''''==""..= """,,"00"~a ~ '_ M ~ . ,m ~_ "~. h __---::-:-~f 'Proolem 1 (See Fig. I,Jor a, b, c, d and e) (34 points) a. Calculate the effective capacitance and the II "'li/ _u___ current across the battery after the capacitors J /~ ; 1 arelflychl!!ed. ( I I- 1 ) - ( = L t ( p E: = 9 V . . CZF( <.< f !-::.,) ::: . '-I--f: ~ ; c r C l~ j jiF ]& 4 jiF c 7 T I I (/(23) -::L I /-(2 ) ::= (5" f.2. 0/tp ;rz;;;;;;c;-, C,&6;ff c;; f(fr c.lic"P"lfd"} '" ~-~----------l J; /< . C/"'ycd C:...Qj L.-o b'C<-VSC. 'f'"'K ( '5 " '& ;Ct;7I M f.'4 d,t, rC I7 CL r :- - f- - - .; f ." iv ~ b. The charge on capacitors that are i series paralleO is e same. rete One c. The voltage across capacitors that are in [series,~~ is the same, C ircle e d. Calculate the char!!eand the potential difference across capacitor C 2 ,. . L _ _ (IF - J .L f,4 F 2.tI, F) ~6 /.{ '(0 . .5' < ::.1 L ~ %- 7 ( ) . ~ vc-7 ';P 0....
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PHYS 2114 Exam 2 Spring 20091 - ~s Physics 2114 Spring 2009...

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