21608-1302.500FinalS08sol

# 21608-1302.500FinalS08sol - Final S08 1302.500 S08 1302.500...

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Final S08, 1302.500 S08 / 1302.500 Final Exam Instructions Write your name and student ID clearly on all sheets and fill your name and student ID on the bubble sheet. Solve all multiple choice questions. No penalty is given for wrong answers. Solve each Problem on a different sheet of paper. Turn in all sheets of the exam including the MC questions. Solutions to the problems should begin from basic physical principles, unless otherwise noted. Show all steps in the derivation of the answers. Make sure you write neatly and orderly. It is YOUR RESPONSIBILITY to make sure that the grader understands your solution. The graders can not give partial or full credit if they can not follow the solution, even if the final answer is correct. You can use a calculator (as long as it has no electronic communication capabilities) and an 8.5X11 crib sheet. Point distribution: 5 points for each multiple choice question 20 points for each text problem Good Luck ==================================================== Potentially useful information: 71 9 3 2 2 8 1 1 1 3 1 0 0 19 31 2 1 4 10 9.0 10 3.0 10 6.7 10 4 1.6 10 9.1 10 9.8 −− = ee TmA k 2 gms C c ms G mkg s qC mk g g m s μπ πε 1

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Final S08, 1302.500 Multiple Choice Questions 1. The electric permittivity of paper is 3.7 times larger than the electric permittivity of vacuum. What is the capacitance of a parallel plate capacitor with plates of dimensions 2.0 cm by 3.0 cm, separated by a sheet of paper 1.0 mm in thickness. (d) 20 pF 2. A defibrillator uses an RC circuit to store energy and then discharges this energy through a patient to restore normal heart rhythm. A certain model of defibrillator uses a 32.0 μF capacitor and a 47.0 kilo-ohm resistor, resulting in an RC time constant of 1.50 s. If the voltage charging the capacitor is 5000 V, what is the maximum energy stored in the capacitor? (e) 400 J 3. Which of the following statements about Kirchoff’s Laws are true?
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21608-1302.500FinalS08sol - Final S08 1302.500 S08 1302.500...

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