Elements of Physics 161
Fall 2009
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SECOND EXAM has been graded. The average is 72%. Grades are in the gradebook.
exam1 solution
exam2 solution
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Due date for HW10 is Nov 16
Due date for HW11 is Nov 23
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Students enrolled in this course are required to regularly check this
750:161 course home page.
Important
announcements
about WebAssign, homework, laboratory/workshop, exams, etc. are
posted at the bottom of this webpage.
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Contents:
lecture notes (1-9 power point, 10-beyond pdf format) and homework solutions (pdf format)
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REMARKS ABOUT HOMEWORK WEBASSIGN:
Give your answers with 3 significant figures in the units indicated. This avoids difficulties with webassign's 1% precision rule.
Powers of 10 should be in E format with no spaces.
HW1, #9, 2P37,
Draw the x-t and v-t diagrams for the train's motion and see if they reflect
the reality.
HW6, #5, 9P43,
Use density of iron from Table 9.3 on page 276 of text book
HW8, # 5, 11P6,
1 Cal equals 1000 cal = 1 kcal. In some #5 versions the number of kcal is wrong.
HW10, # 4, 14P4,
Velocity of sound in seawater is given in Table 14.1 at 25 C. It does not change with temperature as rapidly as the velocity in air.
HW11, # 7, 15P8,
Notation of answer may contain factors like ke and q^2 and (1-sqrt2).
HW11, # 8, 15P17,
Answer is in units of N/C.
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REMARKS ABOUT EXAM AND EXAM REVIEW
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REMARKS ABOUT EXAM WEEK
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FOR ALL RESULTS IN THE LAB:
Give your answers with 3 significant figures in the units indicated.
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Free tutoring available: Professor William DeBuvitz, Friday 10:00am-12:00noon, ARC 332 at the MSLC
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Occasionally,
announcements about the physics 161 course will be send out by
e-mail. I have down-loaded the "official" e-mail addresses
from the University roster. Be sure to check your "official"
e-mail address for new messages.If your e-mail address has changed
or is not listed with the University roster,
let me know.