exam1solutions(1)

exam1solutions(1) - PHYSICS-2101 Spring Semester 2011...

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Unformatted text preview: PHYSICS-2101 Spring Semester 2011 Instructor and section (circle yours) Examination 1 1 February 2011 Chastain (1) Chastain (6) Rupnik (3) Rupnik (4) Rupnik (5) Giammanco (2) J i n ( 7 ) P l u m m e r ( 9 ) Name (print)_____ ANSWER KEY ___________________ LSU ID _________________________ Signature _______________________________________ TURN OFF AND PUT AWAY ALL CELL PHONES, PAGERS, iPods, MP3s, OR ANY OTHER COMMUNICATIONS, AUDIO, OR VIDEO DEVICES Have your LSU ID ready when you turn in your paper. You may not use cell phone or smart phone application as your calculator. You may use an ordinary scientific or even graphing type calculator, as long as it is not of the "full keyboard" sort. Examine your paper to be sure it is complete and legible. There should be 3 problems and 3 questions, totaling 100 points. Examine your formula sheet as well. It should include only 1 page, stapled to the back of this test paper. For the three multiple choice questions , clearly indicate your selected answer(s) for each of the part(s) of the question. For some questions there may be more than one correct response. If so, be sure mark each one. There is room on the paper for scratch work or calculations, but that work will not be checked or graded. There is no partial credit awarded for multiple choice questions. For the three problems, show your work in the space provided. Even a correct answer, without supporting work, will receive little or no credit. Partial credit may be awarded for problems if warranted. Be sure that numerical answers appear with appropriate SI units . Points will be deducted for missing, incorrect, or "silly" units. If the final answer is, in fact, a dimensionless quantity, please write the numerical result followed by the word dimensionless . If you need more room for your problem solution you may write on the back of the page, but be sure to add a note to look on the back. Otherwise anything on the back of the paper will be regarded as scratch work and will not be checked or graded. You will have approximately 60 minutes to complete this examination. Solutions will be posted to the course web page within a few days. Problem 1 (22 total points) While surveying wildlife in Canada's Northwest Territories, a researcher leaves her base camp with her team of assistants and drives by snowmobile 15 km in a direction due north (you may take this a being along the conventional y-axis). After a brief food stop she and her team then proceed in a direction 30 degrees north of east (take this as 30 degrees counterclockwise from the conventional x-axis) for a distance of 25 km, where they camp for the night. The following morning the team drives due west (the negative they camp for the night....
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exam1solutions(1) - PHYSICS-2101 Spring Semester 2011...

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