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Announcements 8/29/11 Prayer Introductions This section: Physics majors
and minors only!a. For others, section 1 is in
445 MARB, right now Signup sheet to be passed
arounda. Willing to offer prayers in
class b. Willing to have phone
number and/or email on a class directory
Close to Home:
Syllabus
Objectives. Five units:a. Fluidsb. Thermodynamicsc. Waves/soundd. Opticse. Relativity
Syllabus, cont. Schedule
a. Reading assignments, lecture topics b. HW/Lab/Term project due datesc. Exams
Syllabus, cont. Grading
a. Guaranteed levels:
b. Categories
Syllabus, cont. Clicker quizzes
a. Two types of questions– Reading quizzes, 2 points if right, 1
point if attempted– Thought questions, 1 point if attempted
b. All questions from a day = 1 quizc. 4 free quizzes, no make-up quizzesd. Register your clicker via class website
ASAP!– Quizzes start next class period
Syllabus, cont. Exams, final, term project
a. More details later Labs
a. Assignments at back of packetb. First lab begins this Saturdayc. Typically 1 week to complete labsd. Don’t count on being able to do it the
last Saturday! Extra credit
a. In syllabus, read about on your own
Syllabus, cont. Class website
a. www.physics.byu.edu → Courses → Class Web Pages → Physics 123 (Colton J)
b. http://www.physics.byu.edu/faculty/colton/courses/phy123-fall11/
On website:a. Study aids
– Lecture notes– Demo videos– Old exams– Exam solutions
b. Obtain class ID number (“CID”)c. Register clickerd. HW submissione. Check grade
f. Labs 3, 6 detailsg. Term project detailsh. Math review handouti. Mathematica handoutj. Etc.
Syllabus, cont. Where to get help on homework
a. Other studentsb. Dr. Colton’s office hours
– MWF 2-3 pm (for now), Underground Lab study area under the skylight
– If you don’t know where that is, there are directions in the syllabus
c. Chris Mackprang’s office hours– MW 5:30-7 pm, F 3:30-5 pm; same
location as mined. The Tutorial Lab, 3rd floor of ESC (info
on class webpage)
Syllabus, cont. Homework: paper-only vs computer-
graded The computer-graded HW systemSyllabus packet contains problems:
Get your missing numbers (“data”) from class website → Put in the [xx]______ spaces before you work the problem
set 1. [01] 3.43 [02] 8.20 [03] 22.2 [04] 30.2 [05] 39.8 [06] 4.0 etc.
Syllabus, cont. Computer-graded HW system, cont.
Answer range in packet, at end of list of problems:
Indicates units, range and decimal places of answer
Type into website form: 63.8
Submit all answers at once
Partial credit, aka “retries”
Points for each successive try: 5, 5, 3, 0 If you miss, correct answer is given to you Use new data each time No retries on multiple choice problems
Syllabus, cont. Final general HW comments:
a. Late HW– 4 free late ones, chosen to give you most pts– All other late HW is 50%
b. All work must be turned in, even for computer-graded problems
– TA has 5 pts for each assignment at his discretion, for legibility/completeness/etc
c. Where to turn in work– Slot labeled “Phys 123, section 2” in boxes near
room N375 ESC– Don’t put name on work, just your CID
d. First HW due Wednesday night!e. My HW solutions – posted in hallway by CSR
office
And now, for the Physics… Serway chapters 1-13, 15: Newtonian
Mechanicsa. Covered in Physics 121
Serway chapter 14: Fluids (static & moving)
a. Starting right now! Then Thermodynamics (chapters 19-22) Then other stuff
Pressure
1 Pascal = ??
1 atm = ??a. 1.013105 Pab. 14.70 psi
ForceP
Area
Demos
Pressure vs. force Collapsing can Magdeburg hemispheres
a. von Guericke and the first vacuum pump, 1654 demo for Ferdinand III
Density
Units?
Density of water: a. 1000 kg/m3
= 1 g/cm3
“Specific gravity”
massdensity
volume
Air, standard conds 0.0013
Wood (oak) 0.6 – 0.9
Liquid nitrogen 0.81
Ice 0.92
Water 1.00
Bricks 1.84
Aluminum 2.70
Steel 7.80
Silver 10.50
Lead 11.30
Gold 19.30
Platinum 21.40
Pressure vs. Depth
Weight of water above area A? (depth h)
Pressure at h: (include weight of air)
Fluid pushes in all directions
Summary
“How to get started”
http://www.physics.byu.edu/faculty/colton/courses/phy123-fall11/
Work hard!!
(More Strange Quark comics at Dr. Durfee’s website, http://sqcomic.com )