PHYS153_Midterm2_05W_term1

PHYS153_Midterm2_05W_term1 - First Letter of Last Name: l:l...

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Unformatted text preview: First Letter of Last Name: l:l The Universiti-r of British Columbia l'rliclterni 2e - November 16—17. Eflfl'fi Physics 153 Elements of Physics TIME: 5H minutes CANDIDATES NAME: Last Name First Name or Initials STUDENT NUMBER: —_ THIS EXAMINATION CONSISTS OF 4 PAGES. CHECK TO ENSURE THAT THIS PAPER IS COMPLETE. iNSTRUCTOR‘S NANIE: — _ .. _ _ _ SECTION NUMBER: (a) lint-1i annihilate Hllflllltl be prepared to proilnre. upon retniest, hisflier liln'tijI’AIK-lS tJE'Ll'Ll. {11] Read and observe the following additional rules: No candidate shall be permitted to enter the examination room after the expiration of oneallalf hour, or leave during the first hall—hour of tlie examination. Candidates are not permitted to ask questions of the inrigilators, except in east-rs of supposed errors or ambiguities in examination questions. CAUTION: Candidates guilt}; of any of the following, or similar. dishonest prantiees shall be innnetliately dismissed from the examination and shall be liable to disciplinary notion. {a} Make use of an}.r books, IIIElllfll‘aHLl'd: ealeulators. audio or visual cassette players or other iiit‘rIntir},r Ellt'l. devices, other than aiitlnn'inecl lift the examiners. {1:} Speaking or [communicating a-‘itli other candidates. Useful constants It — oiil-lfilifinol Ff em .— 2].tJtIIJ,-"'ki§ ti" comm-J- : illEIILlJfkg If Lftce'rrlrrl : 334 X mfiJ-fll‘g "flirt-steam] _ 2256 X UJSL‘WkE flaunter _ l-Uflflflrlmfi Each Question is it] points: — 3 _ if} lil ill Total Mark out of 3L1. Total: 3?] Name: 1. A i'efrigcm’rm using a monoatmnii: ideal gas underguea a cyclic process a —> b —r a 4’ :1 as. shuwn in the figure beluw. The process. r': —.- a is adiabatic. H; = 4 x lflfiPu and P1, = P” = 1 x 1951:“. V}; = 1%,: 3 x iii-Em} and Tn = 201351. a. Find the COP far this refrigerator. b. What. is the change in entrnpy for the path h —+ c. h_. N arm: 2. A damped hémnonic oscillator involves a hlacl-z {11121.91 kg}, a Spring (kzlflfi N111 "1}, and a damping force F = nla'i'. Initially the black aacillataa with an amplitude af 26.2 am. The a1r1plitude falls to thraa— fnurtha of its initial value after =1 amnplata cycles. {a} What ia the value of b'! [b] Haw much energy has been diaaipatad during the 4 cycles-f (a) 1ll-Eha’r ia tlm quality factor Q of the. vanillamr? N nine: 3. A [HESS of 25.ng is attached tn n spring and undergoes simple harninnic: inntinn with winnity given by the graph helnw. Find the nquatinn which rknnrilwn the {impingement as a function of time. What is the spring nnnstnnt? ...
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PHYS153_Midterm2_05W_term1 - First Letter of Last Name: l:l...

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