# Wright State University Lake Campus/2017-9/Phy1050/log

Wright State University Lake Campus/2017-9/Phy1050/Studyguide .. Wright State University Lake Campus/2017-9/Phy1050/Syllabus .. wright.miraheze.org

## Contents

- 1 M 28 August 2017 (UTC)
- 2 T 29 August 2017 (UTC)
- 3 T 5 September 2017 Syllabus
- 4 W 6 Spitball motion lab
- 5 R 7 Sep ?
- 6 F 8 Sep ?
- 7 M 16:49, 11 September 2017 (UTC)
- 8 transclusion deactivated by a nowiki tag
- 9 R 7 Spitball motion lab Data analysis
- 10 M 9 Sep
- 11 M 11 Sep: Miraheze wikifarms
- 12 T 12 Sep
- 13 Wed 13 Sep
- 14 Friday 15 September 2017 Miraheze wikilabs
- 15 Monday 18 September Optics (for Test on Wednesday)
- 16 Tues 19 September Sound(for Test on Wednesday)
- 17 Monday 2 October Newton's Dark Secrets
- 18 Wed oct 4 newton's cannon
- 19 Thur oct 5 curve fit newton's cannon
- 20 Mon 9 Oct
- 21 Tuesday 17 October: Guy's Wikipedia Lecture on Nuclear Power
- 22 19 October 2017 Thursday: Slide Whistle Music
- 23 Breaking Broomstick16:48, 24 October 2017 (UTC)
- 24 tues 10/24 Start climate change: Where to start?
- 25 Upcoming lectures
- 26 Fun stuff (lecture mostly not on exams)
- 27 Exponential decay lab
- 28 Ecliptic and Saros cycle
- 29 Footnotes and References

Everything before global warming | ||
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## M 28 August 2017 (UTC)[edit]Showed card game. Introduced Studyguide. Did first quiz on motion. Don't sweat these calculations if you can't do them. You have other ways to succeed in this class. ## T 29 August 2017 (UTC)[edit]Attendance policy: Allowed to miss 15 days without penalty.
and D is the days that you attend, OR 55 if you attend more than 55 days.
## T 5 September 2017 Syllabus[edit]Test prep: Questions 1-14 of second quiz Special:Permalink/1415990 has been discussed. (quiz called "velocity and acceleration"
## W 6 Spitball motion lab[edit]- Why constant tapping of the ball is equivalent to a constant force: w:Special:Permalink/798712661#Kinetic_theory_of_gases
- Physics_and_Astronomy_Labs/Uniform_acceleration_tapping_basketball_with_spitwads
- Data is here
## R 7 Sep ?[edit]## F 8 Sep ?[edit]## M 16:49, 11 September 2017 (UTC)[edit]## transclusion deactivated by a nowiki tag[edit]{{cot|[[Physics and Astronomy Labs/Uniform acceleration tapping basketball with spitwads#How_Things_Work_Lake_Campus_Fall_17|Hidden transclusion <sup>--click to visit</sup> ]] .. click bar to see or hide}} {{#lst:Physics and Astronomy Labs/Uniform acceleration tapping basketball with spitwads}} {{cob}} ## R 7 Spitball motion lab Data analysis[edit]https://www.youtube.com/watch?v=6ukMId5fIi0 ## M 9 Sep[edit]Did you get email on test postponement? What did we do Thursday and Friday? ## M 11 Sep: Miraheze wikifarms[edit]Want more? ## T 12 Sep[edit]- Today Test prep: Waves.
- https://www.youtube.com/watch?v=IQ1q8XvOW6g beats
**But this is better:**https://www.youtube.com/watch?v=pRpN9uLiouI**Even better: https://www.youtube.com/watch?v=vNuDxc9tZMk (stop at 3:06)**
- Octave and fifth: Start at 1:27 https://www.youtube.com/watch?v=_Rg54Ie9zMQ
- Go to Studyguide: 7/16 from 1409885 to b_waves_PC. Also: NOT ON THIS TEST: What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight (low density) region of the rope to a heavy (high density) rope? Question 14 on studyguide.
## Wed 13 Sep[edit]
**natural 5/3 = 1.6667...**http://www.wright.edu/~guy.vandegrift/Talks/cello.mp3**scientific 2**http://www.wright.edu/~guy.vandegrift/Talks/piano.mp3^{9/12}= 1.681793...
## Next day review[edit]## Friday 15 September 2017 Miraheze wikilabs[edit]## Monday 18 September Optics (for Test on Wednesday)[edit]- https://phet.colorado.edu/en/simulations/category/physics/light-and-radiation
- https://phet.colorado.edu/en/simulation/bending-light
- https://phet.colorado.edu/en/simulation/geometric-optics
- also before the next test
## Tues 19 September Sound(for Test on Wednesday)[edit]- I like this one
- https://academo.org/demos/wave-interference-beat-frequency/
## Monday 2 October Newton's Dark Secrets[edit]- $1.50 is not too much to charge, but awkward to pay:
**https://www.teacherspayteachers.com/Product/Isaac-Newton-PBS-Dark-Secrets-Guided-Viewing-Questions-1703344** - Copyrighted and not right for college, but available at
**https://www-tc.pbs.org/wgbh/nova/education/activities/pdf/3217_newton.pdf**
## Summary of transcript[edit]1 Newtwon wrote in code. Much of of his personal writings were never really understood as late as 1937. 2 3 4 5 An apple speeds up as it falls. At every instant in time it seems to have a certain speed. How do you mathematically describe this "instantaneous" velocity? when the two times are nearly the same. See also File:Tangent as Secant Limit.svg 6 7 8 9 10 11 12 13 14 15 16 ## Wed oct 4 newton's cannon[edit]File:Bisection_method.svg and wikipedia:Bisection method and 4411 <Min <4411.5 ## Thur oct 5 curve fit newton's cannon[edit]- http://www.wright.edu/~guy.vandegrift/wikifiles/NewtonCannon.xlsx
- http://www.xuru.org/rt/pr.asp is better than Excel for curve fitting
- http://www.wright.edu/~guy.vandegrift/wikifiles/NewtonCannon.xlsx
- http://waowen.screaming.net/revision/force&motion/ncananim.htm
- PhET curve-fitting and PhEt least-squares-regression
Procedure: - Measure distance "as crow flies" for v = 1000 and 4000 m/s.
- Predict distance for v=2000. Make a sketch showing how a graph and similar triangles would permit you to find a formula. You can also get the formula by something called Regression_analysis
- Measure and calculate Big/Small and also percent error. The latter is (Measured−True)/True. You can report Big/Small as off by a factor of .... For small errors (less than about 10% or so, they essentially give the same information).
- Fit your three points to a parabola. It's best not to use Excel curve fit. There is an Excel extension, but it is more convenient to search the internet for "regression" fitting.
- Now use your parabola to predict the distance for v=3000. Measure and compare as before.
We collected this data (USING A REDUCED IMAGE ON THE SCREEN): initial speed DISTANCE m/s CM 1000 7.2 4000 36.9 2000 12.4 3000 19.9 ## Mon 9 Oct[edit]- #Newton's_cannon_alarm_clock
- https://www.nde-ed.org/EducationResources/HighSchool/Radiography/hs_rad_index.htm
## duck migration patterns[edit]## Tuesday 17 October: Guy's Wikipedia Lecture on Nuclear Power[edit]See w:User:Guy_vandegrift/Lectures/Nuclear_power ## 19 October 2017 Thursday: Slide Whistle Music[edit]Lifted from special:permalink/1752746: - See also https://www.dctech.com/physics/notes/music/fractionscale2.png
- Between 1 and 2, and going down from the first row I get:
{3/2, 4/3, 5/3, 5/4, 6/5, 7/4, 7/5, 7/6, 8/5, 8/7} V IV VI III iii * ? ? vi ? Here I used capital Romans for major and lower case for minor. The 7/4 is the devil's triad.
## tues 10/24 Start climate change: Where to start?[edit]- http://berkeleyearth.org/team/richard-muller/ and https://www.youtube.com/watch?v=Sme8WQ4Wb5w
- Global_warming_controversy and Hockey stick controversy and List_of_scientists_opposing_the_mainstream_scientific_assessment_of_global_warming and Richard_A._Muller#Climate_change and http://www.wright.edu/~guy.vandegrift/climateblog/
- http://www.wright.edu/~guy.vandegrift/climateblog/ : hide the error and hidden in plain sight
## Test 3 global warming links[edit]- Muller lectures:
## 25 October Lab on finding slopes[edit]This lab is in "Public Domain Format" with individual reports. - Verify and compare these claims:
- nationalgeographi.com (google) Average temperatures have climbed 1.4 degrees Fahrenheit (0.8 degree Celsius) around the world since 1880.
- Summary of findings - Muller (berkeleyearth.org) The analysis shows that the rise in average world land temperature globe is approximately 1.5 degrees C in the past 250 years, and about 0.9 degrees in the past 50 years.
- Wikipedia:Global warming
- Translate this into degrees per mile here in Ohio, or degrees per day here in the spring or fall.
- Groundwater temperature Toledo to Cincinnati about 1C per 20 miles.
- https://www.mapsofworld.com/usa/thematic-maps/maps/usa-temprature-april.jpg december
- seasonal Cleveland seasonal ground (unknown location)
- temperatures are rising in the midwest
## Upcoming lectures[edit]## Resonances in a violin, viola, cello[edit]- http://acousticstoday.org/supplementary-text-violinacoustics-colin-e-gough/ simulation
- https://www.youtube.com/watch?v=3uMZzVvnSiU actual wooden violin plate
- Wolf tone:
- How to fix: https://www.youtube.com/watch?v=_OqrJflI0j8
- See also https://www.youtube.com/watch?v=yFiJXIA70U0 ?
## Advanced curve fitting with Newton's cannon[edit]- Goal: Find the so-called "parabolic" curve File:Kepler_orbits.svg. Or more precisely, be able to predict periods for near-parabolic ellipses by extraplating. Let y=1/t, where t is the time to crash, and do a fit for y=y(v), where v is the initial speed. Data
v t 6100 3m00s 6200 3m32s 6300 6m25s ## Newton's_cannon_alarm_clock[edit]Data taken in classroom: timer ◊ cannon v t 6300 6320 ## Phet photoelectric lab[edit]- https://phet.colorado.edu/en/simulation/legacy/photoelectric
- https://phet.colorado.edu/en/simulation/legacy/photoelectric
## Test 3 global warming links[edit]- Estimates of rise
- nationalgeographi.com (google) Average temperatures have climbed 1.4 degrees Fahrenheit (0.8 degree Celsius) around the world since 1880.
- Summary of findings - Muller (berkeleyearth.org)
- Muller lectures:
## Reviews for Test 3[edit]- Part 1: 11/1/17 (monday) link
## Fun stuff (lecture mostly not on exams)[edit]- Phet global warming: https://phet.colorado.edu/en/simulation/greenhouse
- Should we "do the math" on this coin-on elbow trick? http://publicdomainreview.org/wp-content/uploads/scientificamusements-thumb.jpg
http://publicdomainreview.org/wp-content/uploads/scientificamusements-thumb.jpg ## Exponential decay lab[edit]## Radioactive dating[edit]- http://www.passmyexams.co.uk/GCSE/physics/radiocarbon-dating.html
- Image stored at http://www.passmyexams.co.uk/GCSE/physics/images/carbon-dating.jpg
## Ecliptic and Saros cycle[edit]- Pet lizard problem.
- w:Saros_(astronomy) is a misnomer.
- Eclipse season lasts about a month-typically get 1 or 2 solar and 1 or 2 lunar eclipses.
## Footnotes and References[edit] |