Physics 105 - Fall 2014
Welcome to Physics 105 - Fall 2014!
- Instructor: John S. Colton
- Email: Directory Page
- Office hours: M 1:30-3 pm, W 2:30-4 pm, in the Tutorial Lab N304 ESC
- Office: N335 ESC, available by appointment
T.A./grader: Jerika McKeon
- TA's email address: firstname.lastname@example.org
- TA's office hours: M 3-5 pm, W 5-6 pm, in the Tutorial Lab N304 ESC
- TA weekly review: F 1-3 pm**, in 108 MARB **changed to F 12-3 pm on 18 Nov 2014
- Exam reviews for exam 1: Wed Oct 1, 7 - 8:30 pm and Thurs Oct 2, 6 - 7:30 pm, both in room C295 ESC
- Exam reviews for exam 2: Wed Oct 29, 7 - 8:30 pm and Thurs Oct 30, 5:30 - 7 pm, both in room C295 ESC
- Exam reviews for exam 3: Sat Nov 22, 10 - 11:30 am and Mon Dec 1, 5:30 - 7 pm, both in room C295 ESC
- Exam reviews for final exam: Thurs Dec 11, 5:30 - 7 pm and Fri Dec 12, 6 - 7:30 pm, both in room C295 ESC
The following links are explained more below.
- Syllabus: syllabus - physics 105 colton - fall 2014.pdf
- Homework, warmups, grades, and more: //max.byu.edu
- Discussion forum: //colton.comuf.com
The textbook for the class is College Physics, by Serway & Faughn (6th, 7th editions) or by Serway & Vuille (8th, 9th, 10th editions). Only volume 1 is needed for Physics 105; but volume 2 is used in Physics 106, so if you’re planning to take that course too it may be cheaper to get a book with both volumes combined. Feel free to obtain an inexpensive used copy.
Syllabus and Course Packet
You can download the syllabus here: syllabus - physics 105 colton - fall 2014.pdf. It will also be available in the bookstore for purchase (for about $2).
Max: Homework, Warm-Up Exercises, Clicker Registration, CID number, and Grades
- Link to Max: //max.byu.edu. Homework, warm-up exercises, clicker registration, finding your student "Class ID" number (CID), and grade checking are all handled through the Max website.
- Clickers should be registered at the start of the semester.
- Warmups must be completed by 15 minutes before class.
- Homework must be completed prior to 11:59 pm on the due-date.
- Use your CID instead of your name on all work that you turn in via the homework boxes (e.g. free body diagrams).
- Grades can be checked at any time throughout the semester. If you detect any errors in your grade, please let me know.
- If you want to calculate your grades for various scenarios, you can download this excel spreadsheet: grade calculation worksheet. Just change the numbers in yellow according to what you think you'll get in the various categories and it will calculate your final grade.
- Please sign up on this google doc if you are interested/willing to offer a prayer in class: link removed
Reading Assignments/Warmup Quizzes
- Warmup quizzes are done on Max: //max.byu.edu.
- The reading assigment for a given lecture is listed at the top of the warmup quiz for that lecture.
- In case it's helpful, here's a list of all the reading assignments for the entire semester: reading assignments - fall 2014.pdf
Class Discussion Forum
- See here for the class discussion forum: //colton.comuf.com. Use it to get help on the homework, offer help to others, look for people with whom to form study groups, etc.
- Blank lecture notes, posted before each class: (Note: I sometimes make changes after posting them here, so these may not be 100% identical to my actual class notes... but they should be quite close)
- lecture 1 - position and velocity.pdf
- lecture 2 - acceleration.pdf
- lecture 3 - vectors.pdf
- lecture 4 - relative velocity and 2D projectiles.pdf
- lecture 5 - Newton's laws of motion.pdf
- lecture 6 - using Newton's laws.pdf
- lecture 7 - friction and more Newton's laws.pdf
- lecture 8 - centripetal acceleration and gravity.pdf
- lecture 9 - work and energy.pdf
- lecture 10 - energy cont.pdf
- lecture 11 - power and momentum.pdf
- lecture 12 - momentum part 2.pdf
- lecture 13 - angular kinematics.pdf
- lecture 14 - torque & equilibrium.pdf
- lecture 15 - torque and rotations.pdf
- lecture 16 - angular momentum.pdf
- lecture 17 - pressure and buoyancy.pdf
- lecture 18 - fluid motion.pdf
- lecture 19 - fluid motion cont and thermal expansion.pdf
- lecture 20 - heat, calorimetry, conduction.pdf
- lecture 21 - convection, radiation, ideal gas law, kinetic theory.pdf
- lecture 22 - work, first law, thermal processes.pdf
- lecture 23 - thermal processes cont., engines and second law.pdf
- lecture 24 - vibrations and waves.pdf
- lecture 25 - wave properties, sound.pdf
- lecture 26 - doppler, interference, standing waves.pdf
- lecture 27 - standing waves in air, beats, resonance, music.pdf
- lecture 28 - final exam review.pdf
- Filled-out lecture notes, posted after each class:
- lecture 1 - position and velocity - filled out.pdf
- lecture 2 - acceleration - filled out.pdf
- lecture 3 - vectors - filled out.pdf
- lecture 4 - relative velocity and 2D projectiles - filled out.pdf
- lecture 5 - Newton's laws of motion - filled out.pdf
- lecture 6 - using Newton's laws - filled out.pdf
- lecture 7 - friction and more Newton's laws - filled out.pdf
- lecture 8 - centripetal acceleration and gravity - filled out.pdf
- lecture 9 - work and energy - filled out.pdf
- lecture 10 - energy cont - filled out.pdf
- lecture 11 - power and momentum - filled out.pdf
- lecture 12 - momentum part 2 - filled out.pdf
- lecture 13 - angular kinematics - filled out.pdf
- lecture 14 - torque & equilibrium - filled out.pdf
- lecture 15 - torque and rotations - filled out.pdf
- lecture 16 - angular momentum - filled out.pdf
- lecture 17 - pressure and buoyancy - filled out.pdf
- lecture 18 - fluid motion - filled out.pdf
- lecture 19 - fluid motion cont and thermal expansion - filled out.pdf
- lecture 20 - heat, calorimetry, conduction - filled out.pdf
- lecture 21 - convection, radiation, ideal gas law, kinetic theory - filled out.pdf
- lecture 22 - work, first law, thermal processes - filled out.pdf
- lecture 23 - thermal processes cont., engines and second law - filled out.pdf
- lecture 24 - vibrations and waves - filled out.pdf
- lecture 25 - wave properties, sound - filled out.pdf
- lecture 26 - doppler, interference, standing waves - filled out.pdf
- lecture 27 - standing waves in air, beats, resonance, music - filled out.pdf
- lecture 28 - not posted because we just worked problems from old exams (which are posted below)
Here are videos of nearly all the demos I will do/have done in Physics 105. Most if not all were recorded in previous years.
- lecture 1 - no demos
- lecture 2 - penny and feather
- lecture 3 - milk drop acceleration of gravity
- lecture 4 - vertical cannon cart | shooter and dropper | monkey hunter
- lecture 5 - pushing on two balls | ping pong ball cannon | still shot of ball emerging from end of cannon
- lecture 6 - Newton's Third Law | tablecloth jerk | pen and hoop | ball on string | pulleys redirect tension | simple pulley constant velocity | block and tackle
- lecture 7 - static vs kinetic friction | measuring mu (note: to finish the calculation, tan(26°) = 0.49, so μs = 0.49)
- lecture 8 - ant living on ball (note that when I said the ant thinks there's a "downward force", I meant "outward force")
- lecture 9 - pushing cart vs lifting cart (sorry, no video)
- lecture 10 - two track race | pendulum narrowly missing instructor | predicting speed (not done this year)| Hooke's law | measuring k via N2 | measuring k of shooter cart
- lecture 11 - human horsepower (sorry, no video) | Collision1 - small hits small - velcro | Collision2 - small hits big - velcro
- lecture 12 - Balls knocking over block | Collision4 - small hits big - elastic | Newton's cradle with duckpin balls | velocity amplifier | Collision3 - 'explosion'
- lecture 13 - thrown foam object | rotating bicycle wheel
- lecture 14 - t-handle torque | balanced objects
- lecture 15 - Preclass video to watch: cart and ball race
- lecture 15 - spinning rod | two "identical" rods (sorry, no video) | Moment of inertia races: hoop vs sphere, hoop vs disk, big disk vs little disk, big hoop vs little hoop, big sphere vs little sphere
- lecture 16 - Hoberman sphere | spinning chair and weights | gyroscope | train on rotating track (sorry, no video)
- lecture 17, exam 2 material - strange briefcase | bicycle wheel precession | rotating person - single wheel | rotating person - double wheel
- lecture 17, exam 3 material - force vs pressure | bed of nails | collapsing can | Magdeburg hemispheres | reverse tug of war
- lecture 18 - Coke vs Diet Coke | aluminum foil sink or float | Pascal's barrel (not done this year) | Bernoulli red fluid | blowing on paper | floating ball | chimney effect | cards and wooden block | ball in funnel (not done this year) | link to Elder Nelson's 1997 general conference talk
- lecture 19 - ping pong curve balls (sorry, no video) | liquid bulb thermometer | pressure gauge thermometer | bimetallic strip | ring and ball | rubber nail | lead bell
- lecture 20 - boiling water at 300K
- lecture 21 - helium vs air balloon | LN volume expansion | LN balloon pop (not done this year)
- lecture 22 - lighter molecules go faster | fast molecules cause pressure
- lecture 23 - adiabatic cotton burner | freeze spray | Stirling engine
- lecture 24 - spring vs circular motion | mass on spring - period depends on mass | pendulum - period depends on length | pendulum - period sometimes depends on amplitude | Slinky - longitudinal and transverse waves
- lecture 25 - tubing - wavespeed depends on tension | violin - pitch depends on tension | Shive wave machine - amplitudes add or subtract | 6 still shots of the amplitudes adding/subtracting: still1, still2, still3, (notice in the next one that the two waves essentially cancel each other out for a brief instant in time) still4, still5, still6 | no sound in a vacuum | hearing test | how a speaker works | tuning forks | singing rod | Joy to the World
- lecture 26 - Doppler effect | two speaker interference
- lecture 27 - standing waves on a rubber tube | lady's belt and jigsaw | trumpet harmonics (note in the recording I said "even without using notes" where I meant "without using valves") | open vs closed end | flame standing waves | beats | beating tubes | spectrum analyzer on computer (sorry, no video)
- lecture 28 - no demos
Videos of Homework Solutions
I've decided to post HW solutions to their own website. Videos will generally be posted the day after the HW was due.
Tutorial Lab Info
- Main tutorial lab site (includes a map)
- Tutorial lab schedule (note this is just the current schedule; it's not set in stone)
- Feedback form
- Find tutors you can hire, at this physics tutoring Google group
I strongly recommend working through the old exams entirely on your own before looking at the solutions. Pre-curve averages (medians) are listed for the multiple choice parts of the exams. No guarantees as to whether this year's exams will be the same difficulty, easier, or harder than past exams. Also note that on some past exams I allowed students to bring a note card whereas on others I supplied a formula sheet.
WARNING: In past years I gave 4 midterms. This year I'm giving 3 midterms. Plus, the order I'm presenting some of the topics has changed. Here's how this years' exams compare to the posted exams from previous years:
Exam 1 this year = previous years' Exam 1 + first half of Exam 2 (Newton's Second Law) + centripetal acceleration from Exam 3
Exam 2 this year = previous years' second half of Exam 2 + Exam 3 (minus centripetal acceleration)
Exam 3 this year = previous years' Exam 4
- Exam 1 - Fall 2007 (82.9%) | Fall 2008 (79.3%) | Fall 2009 (78.5%) | Fall 2013(72.7%)
- Exam 2 - Fall 2007 (64.9%) | Fall 2008 (73.4%) | Fall 2009 (76%) | Fall 2013(73.3%)
- Exam 3 - Fall 2007 (66.0%) | Fall 2008 (69.3%) | Fall 2009 (73%) | Fall 2013(63.3%)
- Exam 4 - Fall 2007 (63.4%) | Fall 2008 (70.2%)* | Fall 2009 (76%) | Fall 2013(71.0%)
- Final Exam - Fall 2007 (70.9%) | Fall 2008 (63.6%) | Fall 2009 (72.4%) | Fall 2013(69.0%)
* There was an error in the latent heat of water on this exam, which would affect the answer to problem 23
Notes from Jerika's exam reviews
Here are some notes from Jerika's exam reviews (in pdf and pptx formats).
- Exam 1: Exam 1 Review.pdf, Exam 1 Review.pptx
- Exam 2: Exam 2 Review.pptx
- Exam 3: Exam 3 Review.pdf, Exam 3 Review.pptx
- post Exam 3 material: Unit 4 (Sound) Review.pptx
- Final exam: Final Review.pptx
This year's exams
Here is the first page of exams for this semester: first page of exams - Fall 2014.pdf
Here's where I will post my solutions to this year's exams:
How to get started
You need to do the following things as soon as the semester begins. (If you have added the class late, it's even more important to do them ASAP.)
- Find your "class ID number" via the Max website. You will use the CID as your personal identifier for all your turned-in assignments.
- Read the syllabus, available either as a downloadable pdf file or from the bookstore.
- Get a copy of the textbook (see textbook info, elsewhere on this web page). If you can't get one soon, you can use one of the copies available in the Tutorial Lab (see Tutorial Lab info elsewhere on this web page).
- Do the reading assignments for each upcoming lecture as given on the Warm-up assignments on Max; if joining late, do the past reading assignments.
- For each upcoming lecture, answer the Warm-up quiz for the lecture via Max. Those quizzes are due 15 minutes before lecture.
- Get an "i-clicker" at the bookstore if you don't already have one. Bring your clicker to each class.
- Register your clicker on Max so that you get credit for participating in the in-class clicker quizzes.
- Start working HW problems! They are found on Max. The first assignment is due Thurs, Sept 5. You can get credit for late assignments, so work the HW sets you miss/have missed, in addition to the ones coming up.
- Submit your HW answers via Max. Learn how to get partial credit by re-submitting the problems you get wrong.
- Visit the class discussion forum, //colton.comuf.com, for help finding a study group, help with HW problems, etc. (not set up yet)
- This year's photo contest results: //physics.byu.edu/faculty/colton/phy105-fall14-photocontest
- Last year's photo contest results: //physics.byu.edu/faculty/colton/phy105-fall13-photocontest
- download Spectrum Lab, the free program I used to show sound waves in lecture 28
- Two interfering speaker animations: left, right, combined, combined2, from lecture 27
- Stokes' website that has the "driving past bell tower", "Doppler effect" and "Sonic boom" web-demos, from lecture 27
- Wave on a string simulation, from lecture 26
- Song about the first and second laws of thermodynamics, from lecture 23 (by Flanders & Swann, see also here: //www.nyanko.pwp.blueyonder.co.uk/fas/index.html)
- NASA's satellite tracking website from lecture 13
- Stokes' baseball velocity components animation from lecture 4
- The "projectile motion" applet (with air resistance) from lecture 4
- "Scorched Earth" computer game from lecture 4
- The "moving man" applet from lecture 3
- The "vector web demo" from lecture 3
- Worked physics problems available from U of Oregon
- Study tips, by Dan Styer of Oberlin College
- How to solve physics problems, by Dan Styer of Oberlin College
- Dr Colton's MCAT formula review sheet (includes Physics 105 and 106 material)