mt2soln_08

mt2soln_08 - Midterm 2 solutions, 11/21/08 Page 1 of 2 Phy...

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Unformatted text preview: Midterm 2 solutions, 11/21/08 Page 1 of 2 Phy 9B UC Davis Heatflow a b r A A cos A T A A A A A A A cos Heatflow a b r A A cos A T A A A A A A A cos Physics 9B-C Midterm 2 Solutions Cole [1] a)remainthesameb)Truec)massd)decreasee)alloftheabovef)whiteg)0 h)Falsei)risej)decrease. [2] a)(10pts)Fromthediagram A T = A + 2 A cos so I A T 2 = A 2 1 + 2cos ( ) 2 where I 3 A ( ) 2 = 9 A 2 .Thus, I I = A 2 1 + 2cos ( ) 2 9 A 2 I = I 1 + 2cos ( ) 2 9 b)(5pts)Thefirstsecondarymaximumoccursmidwaybetweentheminimawhichareat = 2 3 and 4 3 .Thefirstsecondarymaxoccursat=.Thephasordiagramis: c)(5pts)leavingatotalamplitudeof A. I I = A 2 9 A 2 I = 1 9 I . [3] Thewaterstartsoutwithgravitationalpotentialenergywhichgetsconvertedintoheat. Takingasmallarbitrarymass m ofthewater. mgh=Q Usethespecificheatofwatertofind...
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mt2soln_08 - Midterm 2 solutions, 11/21/08 Page 1 of 2 Phy...

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