Thermal Equilibrium - Physics for Scientist and Engineers - Past Paper, Exams of Engineering Physics

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University of California at Berkeley Department of Physics Physics 7B, Spring 1998 Final examination, section 2: Prof. Jacobsen May 19, 8AM to 11AM You will be given three hours to work this exam. No books are permitted, but you may use a handwritten sheet of notes no larger than one standard sheet of paper. Your description of the physics involved in a problem is worth significanuy more than any numerical answer. Show all work, and take particular care to explain what you are doing. Write your answers directly on the exam, and if you have to use the back of a sheet, make sure to put a note on the front. Do not use a blue book or scratch paper. The multiple choice questions are worth one point each for a total of forty points. The individual parts of the four main questions are labeled with their point values, which total one hundred points. The exam total is one hundred sixty points. £9 = 8.85 10-12 Fim = ily = 1.26 106 H/m sin 45° = 0.707, cos 45° = 0.707, sin 30° = 0.500, cos 30° = 0.866 Properties of water: density = 1000 kg / m3 heat of fusion = 333 kI/kg Cp =4190 J/kg *K heat of vaporization = 2260 kJ/kg NAME: SID NUMBER: DISCUSSION SECTION NUMBER: DISCUSSION SECTION DAY/TIME: ‘Your signature here says you want Your grade posted by SED number Read the problems carefully. Try to do all the problems. If you get stuck, go on the the next problem. DONT GIVE UP! Try to remain relaxed and work steadily.