practicefinalmg

practicefinalmg - Name: StudentID: Physics 6B Spring 2008...

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Unformatted text preview: Name: StudentID: Physics 6B Spring 2008 Lecture 1 and 2 Practice Final Exam Please write your name on every sheet of the exam. Closed book, one 5x8 index card in your own writing is allowed. Non pro- grammable calculators are allowed. If a problem is ambiguous, notify the instructor. Clarifications will be written on the blackboard. Check the board occasionally. Time for exam: 3 hours. There are five questions, check that your exam has all 12 sheets. When applicable draw diagrams and show your work. Partial credit will be given for significant progress towards the solution. Partial credit will not be given for random, unitless numbers left for the TA to decipher and interpret. In all problems neglect air resistance unless instructed otherwise. The per- mittivity of free space is given by = 8 . 854 10- 12 C 2 / (N m 2 ) and the permeability of free space is given by = 4 10- 7 T m / A. You might also find k = 1 / (4 ) = 8 . 988 10 9 N m 2 / C 2 helpful. The problems as well as their a)-d)/e) parts are ordered in increasing difficulty (deviations from this policy are clearly marked). You might find it advantageous to work your way into each problem and attack the d)-e) parts at a later stage. Remember that partial credit will be given for the right idea or reasoning. If you cannot figure out part a) or b) the result of which you need in a later part, you are provided an alternate value (if you cannot figure out, assume ...). State clearly if you decide to take the alternate value to be able to receive full credit for that later part. Stop your work when the time is up - an announcement will be made. If you continue your work after the announcement is made 10 points will be taken off the exam immediately. Hand in your exam with the TA assigned to your last name (alphabetically) who will tick your name off a list using your BruinID as identification. Your final only counts if it was properly registered using this procedure. Good Luck, and have an enjoyable Summer break !! Please do not write in this box Problem Points of Total 1 29 2 15 3 22 4 20 5 20 Total 106 1 Kirchhoffs Junction Rule i.e. Current conservation: I i = 0 Take entering currents as positive, leaving currents as negative. Current di- rection does not matter as long as current is conserved (i.e. all currents leaving arection does not matter as long as current is conserved (i....
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practicefinalmg - Name: StudentID: Physics 6B Spring 2008...

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