Physics Course Webpage
Exam 1: Tue 18 April
exam 2: Wed 17 May
final exam: Wed June 7 at 1:20pm
Exam 1: Tue 18 April
exam 2: Wed 17 May
final exam: Wed June 7 at 1:20pm
Instructions: Clicking on the section name will show / hide the section.
Veritasium https://www.youtube.com/user/1veritasium
Smarter Every Day https://www.youtube.com/channel/UC6107grRI4m0o2-emgoDnAA
Minute Physics https://www.youtube.com/channel/UCUHW94eEFW7hkUMVaZz4eDg
The King of Random https://www.youtube.com/channel/UC1zZE_kJ8rQHgLTVfobLi_g
PhD TV https://www.youtube.com/user/phdcomics
Acapella Science https://www.youtube.com/channel/UCTev4RNBiu6lqtx8z1e87fQ
This is the penultimate week. It is axiomatic that it will be propitious for you to work assiduously for 7 more days. Concentrate on the cardinal concepts and neglect the nugatory. We will practice problems, and I'll allow no obstreperous or lassitude behavior and apply my puissant pedagogical techniques.
When is a good time on Thurs or Friday to have an open lab for the physics final?
For Tuesday,, you should do the same for chapters 5 and 6, AND do problems 1- 6 from Revision Problems Review deck in FILES
For Wedesday: do the same for chapters 7 and 8 and do RPR 7-11
For Friday: do the same for chapters 9 and 11 and do the "Final Exam Review" handout problems
REVISION WEEK 1: Congratulations! You have mastered mechanics in classical physics. This is a college prep course using a college textbook. In most other schools it would be called Honors Physics.
But you are not done yet. The final exam is waiting.
To study, if you don't have the habit of working harder during revision, then build that habit. If you want to maintain or improve your grade (and who doesn't?), then make sure you devote 2-3 hours each week to study. It is perverse that finals are when great weather happens, but life is not fair.
THE FINAL IS: 152 points, 11 problems, all with multiple parts, 2 of them are reading or drawing graphs.
How to study.
The Kilogramme.
LET'S DIG OUT THE TERM 2 FINAL FOR REVIEW NOW
HW due Monday: Minilab for hanging spring and apple is due.
HW due Tuesday: 11: Q-11, 12 MCQ-5,6,7 P-4, 27, 29, 35
HW due Wednesday: rewrite and show me a list of 5 main concepts and classics for chapters 1-2, with sketches and names, AND do problem 1 from the attached Revision Problems and Review file in FILES.
For Friday, you should do the same for chapters 3 and 4; And do problems 2 and 3 from RPR in FILES. Also do the Wave Question for Final in FILES.
For next Tuesday, you should do the same for chapters 5 and 6, AND do problems 1- 6 from Revision Problems Review deck in FILES
Points:
an oscillator. is it SHM? How do they do this?
and the Foucault Pendulum
and how it works. http://en.wikipedia.org/wiki/Foucault_pendulum#/media/File:Foucault-rotz.gif
HW due Monday: 11: Q-7,8,9,10; P-64; MCQ-1,2,3,4. Turn in the Beam Analysis lab report. See prior week for the assignment.
Exam 2: wednesday--covers chapter 9, and of course the list of classics.
1.Simple table with weight on it
2.Teeter totter balanced with unequal weights
3.Horizontal sign post or cross beam (minilab)
HW due Friday:
HW due next Monday: Minilab for hanging spring and apple is due. See below for the assignment; and 11: Q-11, 12 MCQ-5,6,7 P-4, 27, 29, 35
points:
HW due Monday: do the other classics (4-8) that you didn't do for Wednesday; do chpt 9: p-26 and read sections 11-1 to 11-3; turn in 11: Q-1-5; P-1,3,5;
Tuesday: some of you will take AP Calc this morning, and the rest will meet in class as usual. We will review. Calculate the period expected for the bowling ball and golf ball swinging in the classroom.
HW due Wednesday: 11: Q-6; COQ-1,2; P-2, 7, 9,1
HW due Friday: L^{4} lab is due in class.
HW due next Monday: 11: Q-7,8,9,10; P-64; MCQ-1,2,3,4. Turn in the Beam Analysis lab report. See below for the assignment.
Exam 2: next wednesday--covers chapter 9, and of course the list of classics.
1.Simple table with weight on it
2.Teeter totter balanced with unequal weights
3.Horizontal sign post or cross beam (minilab)
Due next Monday, the Beam Lab
Points
HW due Monday: 9: P-30, 80 (assume a thin shelf),81,22a, physlet http://phet.colorado.edu/en/simulation/ramp-forces-and-motion; open and look at friction tab. Set static friction = 1.0 and ramp at 0^{0}, move crate on the ramp; then increase angle until it slips. Now show by statics calculation that this angle can be predicted exactly (just do the force balance with a = 0). Turn in calculation and a print of the physlet at that angle. (see under physics tools if you don’t know how to make a screenshot)
Tuesday: Some of you are taking AP exams, the rest will meet in class as usual.
HW due Wednesday: Review the list of 8 classic problems in chapter 9 and turn in a solution for numbers 1,2, and 3. PIML: find one real-world application of statics in your home where at least 4 forces are acting on the object that is in static equilibrium. Bring an FBD of the object. Exam 2 is in one week. There is no study guide. Look below for the classics. What other concepts do you need to know, and what definitions do you need to learn?
HW due Friday: We did the minilab on Wednesday. Today show me the FBD and symbolic derivation for T as a function of all other variables (M,X, L, θ).
HW due next Monday: do the other classics (4-8) that you didn't do for Wednesday; do chpt 9: p-26 and read sections 11-1 to 11-3; turn in 11: Q-1-5; P-1,3,5;
Classics for chapter 9
Points: Be able to solve any of the 8 classic problems.
HW due Monday: 9: Q-6, 7, 8, 9; P-7,9,12,13,62 and speaking of gravity, look at this:http://io9.com/watch-what-happens-when-you-wring-out-a-washcloth-in-sp-476159356
Tuesday: none, but I will give a quiz on car-crash physics. review your notes from the video, and watch the video if you didn't see it yet.
HW due Wednesday: 9: Q-15 MCQ-1, 2, 3, 4; P-15,17,18,63 Do ladder problem in class.
HW due Friday: 9:Q-16; MCQ-6, 8, 10; P-19,21,59,78 We will do the L^{4} lab in class.
HW due next Monday: 9: P-30, 80 (assume a thin shelf),81,22a, physlet http://phet.colorado.edu/en/simulation/ramp-forces-and-motion; open and look at friction tab. Set static friction = 1.0 and ramp at 0^{0}, move crate on the ramp; then increase angle until it slips. Now show by statics calculation that this angle can be predicted exactly (just do the force balance with a = 0). Turn in calculation and a print of the physlet at that angle. (see left under physics tools if you don’t know how to make a screenshot)
Next week:beam minilab in class
Points:
SEE THE NEW SEATING CHART
Do you know ISM alum Charlie MacKenzie-Smith? Here is his senior design project at Columbia. http://www.thebeasts.squarespace.com/
HW due Monday: Show me solutions for these classic problems:
a. your car goes from zero to 40 mph in 6.0 seconds. measure r for your car's tire, and then find ω_{f,} Θ, and α. Also calculate how far, x_{f,} the car went.
b. a bowling ball of radius 5.0" and mass 10.0lb is set free on a hill that is 2.5m high and 15m along the slope. There is rolling friction of 45N. How fast is the ball going at the bottom? How long does this trip require?
Also due next Monday: Read all of section 9-1; 9: COQ; Q-1,2,3,4
HW due Tuesday: exam 1 in class There is a study guide posted in FILES
HW due Wednesday:
HW due Friday: 9:P-1,2,3,5, 57 and show me Hw from monday chapter 9
HW due next Monday: 9: Q-6, 7, 8, 9; P-7,9,12,13,62 and speaking of gravity, look at this:http://io9.com/watch-what-happens-when-you-wring-out-a-washcloth-in-sp-476159356
HW next Tuesday: there will be a quiz on car crash physics. .
Demos: “ladder” on wall, wire with weight
Points: (yes, you will have to learn some of this from your reading)
is about the Coriolis Effect and angular momentum 5:58
HW due Monday: 8: q-17; p-83, 84, 88, 91.
Due Tue: minilab on Vernier rotary motion minilab, follow directions on handout (can be found in FILES). We will do a rotational collision in class!
HW due Wednesday: We did a "collision" with the Vernier rotary motion sensor. Calculate the momentum before and after the collision. Calculate the kinetic energy before and after the collision. What % of kinetic energy was lost?
Also due Wednesday: if you got a big red X on your bbbb (bowling ball barbell) assignment, then bring in the calculations for the model of I, torque (by Fxr), and angular acceleration (by kinematics). Show the calculation,and make the writing clear. Put a box around your answers.
Friday: no school
HW due next Monday: Show me solutions for these classic problems:
a. your car goes from zero to 40 mph in 6.0 seconds. measure r for your car's tire, and then find ω_{f,} Θ, and α. Also calculate how far, x_{f,} the car went.
b. a bowling ball of radius 5.0" and mass 10.0lb is set free on a hill that is 2.5m high and 15m along the slope. There is rolling friction of 45N. How fast is the ball going at the bottom? How long does this trip require?
Also due next Monday: Read all of section 9-1; 9: COQ; Q-1,2,3,4 and do 9:P-1,2,3,5, 57
Points: Monday: review the bbbb calculation
Tuesday: do the rotary collision with Vernier
HW due Monday: 8: Q-13; p-49, 80, 51, 52, 55, 50
HW due Tuesday: The minilab: show me your calculations for parts 2 (equation for torque) and 3 (equation for I) of the Vernier rotary motion minilab.
Due Wednesday. 8: P-60, 61, 62
Due Friday: 8: p-63, 67. Turn in your answer for the bowling ball balancing barbell (bbbb): show me the Model of I, calculation of τ (torque), α, and I (based on Newton's second law).
Also due Friday: bring the safety data you found for your car back in week of 3 January. In class we will watch two videos and fill in a worksheet.
make sure to turn on HD quality
HW due next Monday: 8: q-17; p-83, 84, 88, 91
The lab report on Vernier Rotary Motion is due next Tuesday. The report is
Points:
HW due Monday: bike wheel and fan data from class, calculate I, on page handwritten solution, include sketch, show forces
Tuesday: we will take data for the minilab on rotational motion. But first, this is a materials science awesome
HW due Wednesday: 8: MCQ-1- 6; Q-11, 12; P-18, 31, 76, 79, 32
HW Due Friday: Write your calculations for the rolling you did on 17 March in class. Describe your rolling object COMPLETELY, including radius and any necessary details so I can find the exact same object. For each case of motion (constant speed and accelerating from rest) report ω, Θ, and α. Assume constant acceleration. Put your answers into a table with headings and units.
HW due next Monday: 8: Q-13; p-49, 80, 51, 52, 55, 50
Points:
You are invited to join an ISM trip to see the total solar eclipse in August, just before school starts.
Your parents/guardians should get a letter, or look here. http://ismscience.org/moodle/course/index.php?categoryid=3
HW due Monday: 8:Q-7,8; P-13, 15, 17, 19
HW due Tuesday: read sections 8-4, 8-5, and 8-6 . do problems 8:Q-10, P-21, 22, 25, 27, 26; collect data on fan wheel in class
HW due Wednesday: No class....
HW due Friday: no school
HW due next Monday: bike wheel and fan data from class, calculate I, on page handwritten solution, include sketch, show forces
Due next Tuesday: .8: MCQ-6; Q-11, 12; P-18, 31, 76, 79, 32 And write your calculations for the rolling you did on 17 March in class
Points this week:
Welcome Back. One term left till summer!
Due Monday: none
Due Tuesday: read the first 3 sections of chapter 8. complete 8:Q-1 and MCQ-1,3
Due Wednesday: chpt 8: P-1, 2, 3, 5
HW due Friday: 8: Q-2, 3, 4, 5; P-2, 7,11
HW due next Monday: 8:Q-7,8; P-13, 15, 17, 19
goals:
The Final Exam is 160 pts, 12 problems total. 3 are definition/concept, 4 are problems (symbolic), and 5 are problems (numeric). Counting all the sub-parts, there are 25 separate questions so you get about 5 minutes each. I'm trying to encourage you to practice solving problems so you can do these smoothly.
HW due Monday: presidents day.
This is Revision week. YOU need to decide where to best spend your time. Many of you have forgotten how to do energy problems, so that is important for review.
HW due Tuesday: bring your first exam from this term to class. Do this problem: A child and sled of mass M slide down a hill of vertical height H onto a frozen lake. There is no friction on the hill. On the lake, there is a friction coefficient of μ. How far will the child slide before stopping?
HW due Wednesday: Write the lists of classic problems for chapters 6-7. Do these two problems both symolically and with numbers:
1. A spring of constant k=2000N/m is pushed down on the table a distance of 5.0cm. a) How much force is needed to hold it there? b) When released, how high will it go? c) How fast will it be going just before it hits the ground?
2. A 2000kg car is speeding at 44 m/s on a wet road, μ = 0.3. The driver locks the breaks on. a) how far will the car skid before stopping? b) how much heat will be dissipated by the skid? c) If he was instead going the speed limit of 55mph, how far would he skid?
HW due Friday: solve 2 classics from each chapter 7 and 8 and solve them. And do this problem. 1) A cannon ball of mass 12kg ans speed 15 m/s hits and sticks to an ice house of mass 750kg on the lake. a) how fast will they be going after the collision? b) If μ = 0.1, how far will they slide before stopping? c) if instead the ball bounces off elastically from the ice house, how fast will the house be going after the collision?
review the practice problem from Wednesday in class.
1. A mass M on a ramp length L and angle Θ slides halfway without friction. What is speed at 1/2 way point?
Then is slides the rest of the way with F_{f} friction. What is speed at the end of the ramp?
(numbers L=100, Θ = 20^{o}, M = 30kg, F = 3.0N)
Answer: this is a two stage problem, so break it into a simple ramp and friction ramp.
NOTE: I won't expect you to do FBD on this exam, so I changed that part.
Note: it's possible that friction is so high that it will stop on the ramp, so your answer may show that.
goals for this week: be able to write a map of the content for chapters 6-8
Study hint: what is on the study guide or important in class that we haven't been tested on this term?
Points for this week:
HW due Monday: do all 5 "sample exam questions for term 2 exam 2" in FILES Do two problems from this website http://www.physicsclassroom.com/calcpad/momentum/problems
HW due Tuesday: do any 8 additional problems from the "Momentum practice test" in FILES
Wednesday: Exam 2 in class or ITL
HW due Friday: no class
study gravity:
HW due next Tuesday: bring your first exam from this term to class. Do this problem: A child and sled of mass M slide down a hill of vertical height H onto a frozen lake. There is no friction on the hill. On the lake, there is a friction coefficient of μ. How far will the child slide before stopping?
Points:
review, review, review
HW due Monday: 7: P-21, 37, 72 show me solutions to all 9 problems from the Classic Problems in Momentum in FILES. 3 were due last week
HW due Tuesday: Complete all data in the lab table for your objects use the best info or estimate of time of collision that you can obtain. Do 3 problems from the Momentum Practice Test in FILES.
HW due Wednesday: Turn in typed and complete analysis section of momentum lab. See the example foundation report I handed out and that is posted in FILES.
HW due Friday: Lab report on momentum is due today, Feb 10. THE EXAMPLE REPORT IS POSTED IN FILES UNDER THE EXPERIMENT. I wrote this in 45 minutes from scratch, so I hope your writing takes less than 2 hours total. I had to pick a particular case for my example, and I expect you to write your own words for the parts that are specific for your collision. If you use my words, give me credit at the beginning ("Portions of text taken from Dr. Fisher Foundation Report"). Please make sure you have the lab report guidelines in front of you while you write.
HW due next Monday. do all 5 "sample exam questions for term 2 exam 2" in FILES. Do two problems from this website http://www.physicsclassroom.com/calcpad/momentum/problems
Exam 2 is next wednesday. The slides for chapter 7 are posted and the study guide is posted.
Schedule:
Mon: problems, hand out practice problems, review lab analysis, discuss lab report
Thur: momentum and a balloon (volunteer needed), classic problems, review, "turn around" review of chapter 7
Points for this week:
Please sign the sheet if you are on the show choir tour and verify you will not miss the exam on 15 Feb.
HW due Monday: Look at this physet, •http://phet.colorado.edu/en/simulation/collision-lab, and check all the options on the right. then do an elastic collision and a completely inelastic collision. Write the effects on energy, on momentum, and on the speed of the CM. Do the same in the Advanced tab, and explain why the CM changes direction. 7:P-69, 73, classic problems sheet 4-6
Due Tuesday: classic problem 7-9 from handout; 7: Q-15,16, P-10, 29, 75. We will analyze momentum and the egg in class..
HW due Wednesday: Read carefully the assignment so you are well prepared for the momentum lab during class today
HW due Friday: bring x vs. t and y vs. t plots for your momentum lab collisions; the data are posted on the J: drive in our class folder;
NOTE: you are tracking two objects, so use the Set Active Point button to start the points for the second object. See Video Analysis in Loggerpro in Physics Tools for help on this.
HW due next Monday: 7: P-21, 37, 72 show me solutions to all 9 problems from the Classic Problems in Momentum in FILES. 3 were due last week
HW due next Tuesday: Complete all data in the lab table for your objects use the best info or estimate of time of collision that you can obtain.
Schedule:
finish chapter 7
Next week: chapter 8, and the lab is due
Points:
Know how to solve all 8 classic momentum problems
Design an experiment to test water balloon to the head
Show ability to use Loggerpro video analysis for lab
Show ability to solve momentum and kinetic energy problems
HW due Monday: 7: Q-14 P-17, 25, 33, 68, 71, 76
HW due Wednesday: 7: MCQ 1, 2, 5; P-19, 35, 67
HW due Friday: in FILES, Chapter 7 classic problems in momentum 1-3; and from text MCQ 7, 11
HW due next Monday: Look at this physet, •http://phet.colorado.edu/en/simulation/collision-lab, and check all the options on the right. then do an elastic collision and a completely inelastic collision. Write the effects on energy, on momentum, and on the speed of the CM. Do the same in the Advanced tab, and explain why the CM changes direction. 7:P-69, 73, classic problems sheet 4-6
HEY consider this. http://www.mnasm.org/camp/
Momentum Lab: conduct Monday Jan30 in class
Schedule: Mon: completely inelastic 2-d: point out classic problem sheet
Points:
HW due Monday: no school! The study guide is handed out.
HW due Tuesday: 7:Q-4-6; P-2, 4, 11, 15
HW due Wednesday: 7:Q-7,8,11,12,13; (yes, chapter 7 HW is due, but we'll spend the class time in review for the exam)
HW due Friday: exam 1; the study guide is posted in FILES.
HW due next Monday: 7: Q-14 P-17, 25, 33, 68, 71, 76
Demos: air hockey pucks; get the bachristochrone and demonstate, ask question.
Goals for this week:
HW due Monday: 6: P-58, 59, 73
HW due Tuesday: 6: P-75, 77, 79; study chapter 7 sections1-2,
using this physlet http://phet.colorado.edu/en/simulation/the-ramp, tab "more features", and find the minimum work to push the filing cabinet on flat ramp from 0 to 30m (full length) with friction coefficient of 0.3. Can you get less than 4500J for W applied? print and turn in page of minimum answer
HW due Wednesday: .6: MCQ 1-8; and chapter 7:COQ 1,2
HW due Friday: ; 7: Q-1-3; P-1,3, 7 quiz on one of the energy classics (Let's see how you are doing learning this energy stuff) The study guide was handed out.
HW due next Monday: no school!
HW due next Tuesday: 7:Q-4-6; P-2, 4, 11, 15
HW due next Wednesday: 7:Q-7,8,11,12,13; P-17, 25, 68, 71 (quiz on simple momentum similar to P-3)
Demos: air hockey pucks; get the bachristochrone and demonstate
Points:
Welcome back, and happy new year! Amazing things will happen in physics this year, and you will be part of that journey.
HW due Tuesday: PIML (Physics in My Life) presentations by each person: 1 minute where you stand up and describe a situation where energy transformation takes place, and you must estimate the quantity of joules being transformed.
HW due Wednesday: chpt 6: P-8 (hint: think of the work the man does on the board and the work that gravity does on the rock.) And do this problem: A 1.2 kg cat falls off a branch that is 3.0m high. What speed will it hit the ground? (Use energy, not kinematics) You and your friend have put a mattress under the cat, and it compresses elastically by 24cm to stop the cat. What is the spring constant for this mattress?
And do this problem: You, assuming 50.0 kg, are snowboarding down a 30. degree hill at 4.5 m/s and fall on your face and slide 20.0m further before you stop. How much work does friction do? How much energy is turned into heat? What is the coefficient of friction between you and the snow?
HW due Friday: 6: P-21, 26, 37, 51
HW also due Friday: We will do a unit on the physics of car crashes. To start, go to http://www.iihs.org/iihs/ratings and enter the BRAND, MODEL, and YEAR of the vehicle you ride in the most. Print the first page of the report with some safety info (you can print the Full Report but it will be a lot of pages). And then watch the crash videos in the video tab. Describe how effective your vehicle is at protecting the driver during a crash. (for extra credit, do Loggerpro analysis of the crash to find acceleration of the test dummy. The measure tapes are 24 inches long.)
HW due Monday: 6: P-58, 59, 73
Learning points for this week:
NOTE: Loggerpro 3.12 is out, and if you downloaded 3.11, you should update so you can analyze movies. See Physics Tools for instructions.
HW due Monday: 6: Q-12, P-29, 23;
Write the 8 classics for chapter 5 in your notebook. Find them on the powerpoint slides posted above.
(we will do the energy minilab in class. as usual, if you miss the minilab, come see me to get the information.)
HW due Tuesday: 1. Calculate how much work you do to climb the stairs from my lab to the 400 floor (up one level). 2. Using energy methods, find the average force needed to accelerate a 66g rocket from rest straight up so that at 550m elevation it is travelling at 330m/s. Start with Wnc = ΔPE + ΔKE.
HW due Wednesday: 1 page data analyzed for in-class minilab on energy. The Loggerpro data is what you collected in class. The table we built in class has the following columns for each run: object, mass of object, Δh, ΔPE (will be negative), v_{final}, v_{initial}, ΔKE, W_{drag} = ΔPE+ΔKE, W_{drag}/ΔPE, F_{drag}
HW due Friday: No class. Read the info below on the physics of Santa Claus. What is the KE of the fully loaded sleigh travelling at full speed?
HW due after break on Monday 3 January: PIML (Physics in My Life) simple presentations by each person: 1 minute where you stand up and describe a situation that you participated in where an energy transformation takes place, and you must estimate the quantity of joules being transformed.
Points for this week:
THE PHYSICS OF SANTA CLAUS. http://www.snopes.com/holidays/christmas/santa/physics.asp
I. There are approximately two billion children (persons under 18) in the world. However, since Santa is a Christian myth, this reduces the workload for Christmas night to 15% of the total, or 378 million (according to the Population Reference Bureau). At an average of 3.5 children per house hold, that comes to 108 million homes, presuming that there is at least one good child in each. II. Santa has about 31 hours of Christmas to work with, thanks to the different time zones and the rotation of the earth, assuming he travels east to west (which seems logical). This works out to 967.7 visits per second. This is to say that for each household with a good child, Santa has around 1/1000th of a second to park the sleigh, hop out, jump down the chimney, fill the stockings, distribute the remaining presents under the tree, eat whatever snacks have been left for him, get back up the chimney, jump into the sleigh and get on to the next house. Assuming that each of these 108 million stops is evenly distributed around the earth (which, of course, we know to be false, but will accept for the purposes of our calculations), we are now talking about 0.78 miles per household; a total trip of 75.5 million miles, not counting bathroom stops or breaks. This means Santa's sleigh is moving at 650 miles per second -- 3,000 times the speed of sound. For purposes of comparison, the fastest man-made vehicle, the Ulysses space probe, moves at a poky 27.4 miles per second, and a conventional Reindeer can run (at best) 15 miles per hour. III. The payload of the sleigh adds another interesting element. Assuming that each child gets nothing more than a medium sized Lego set (two pounds), the sleigh is carrying over 500 thousand tons, not counting Santa himself. On land, a conventional Reindeer can pull no more than 300 pounds. Even granting that the "flying" Reindeer could pull ten times the normal amount, the job can't be done with eight or even nine of them -- Santa would need 360,000 of them. This increases the payload, not counting the weight of the sleigh, another 54,000 tons, or roughly seven times the weight of the Queen Elizabeth (the ship, not the monarch). IV. 600,000 tons traveling at 650 miles per second crates enormous air resistance -- this would heat up the Reindeer in the same fashion as a spacecraft re-entering the earth's atmosphere. The lead pair of Reindeer would absorb 14.3 quintillion joules of energy per second each. In short, they would burst into flames almost instantaneously, exposing the Reindeer behind them and creating deafening sonic booms in their wake. The entire Reindeer team would be vaporized within 4.26 thousandths of a second, or right about the time Santa reached the fifth house on his trip. Not that it matters, however, since Santa, as a result of accelerating from a dead stop to 650 m.p.s. in .001 seconds, would be subjected to forces of 17,500 g's. A 250 pound Santa (which seems ludicrously slim) would be pinned to the back of the sleigh by 4,315,015 pounds of force, instantly crushing his bones and organs and reducing him to a quivering blob of pink goo. V. Finally, remember that Santa lands on the roof of each house, and there are at least three reasons each house would be destroyed completely. First, the weight of the reindeer and sleigh, as shown, will crush the house. Second, the reindeer and sleigh while flying have a momentum of 6x10^{13} kg*m/s, and must stop in less than 1/10,000 second, giving a Third Law force on the roof of 6x10^{17} N, or over 6 billion tons. Third, the heat of all those exploding reindeer would incinerate the rubble. |
Sunita Lyn "Suni" Williams née Pandya ^{[1]} (born September 19, 1965) is a former American astronaut and a United States Navy officer. She holds the records for longest single space flight by a woman (195 days),^{[2]}total spacewalks by a woman (seven), and most spacewalk time for a woman (50 hours, 40 minutes).^{[3]}^{[4]}
Williams was assigned to the International Space Station as a member of Expedition 14 and Expedition 15. In 2012, she served as a flight engineer on Expedition 32 and then commander of Expedition 33.
This is the YouTube tour we watched.
HW due Monday: 5: MCQ 1, 2, 3, 5, 7, 8; P: 38,43,47;
HW due Tuesday: Ping pong minilab (see in Files or on J: drive)
HW due Wednesday: open Energy Skate Park physlet basics listed below and operate it with and without friction; write by hand a copy of the energy bar graph for the friction case and describe in a few words what the bar graph shows.. ....
chapter 6: Q-1,2,3,4,5,6; P-1, 3, 5, 9 ,17,18
Given what you know of the time for the earth to circle the sun, and the distance to the sun, calculate the mass of the sun;
HW due Friday: 6: MCQ 1, 5, 6, 7, 8; Q-9, 10,15,17; P-20, 21,26, 27, 31
Look at this ISS video before class:
Make sure your table and graph for Daily Measurements is done. Your group will present a report on Daily Measurement next Wednesday.
HW due next Monday: 6: Q-12, P-29, 23;
Write the 8 classics for chapter 5 in your notebook. Find them on the powerpoint slides posted above.
in class we will perform the energy minilab
HW due next Wednesday: 1 page data analyzed for in-class minilab on energy. Show that the measured potential energy equals the measured kinetic energy. Show that the measured work to lift the object equals the PE and KE. And what fraction of the energy is lost to friction.
Demos: spring jumper or dart gun
Friday Mini lab: in class falling objects measured. Do energy balance.
Physlets: Energy skate park: http://phet.colorado.edu/en/simulation/energy-skate-park-basics
Points for this week:
Welcome to Term 2! We have 3 busy weeks before break, so stay focused and you'll be rewarded by Santa.
HW due Monday: none, but be sure to review chapter 5 sections 1-3, and read 5-5 and 5-6. (we will skip section 5-4.)
Tuesday: Calculate for the centrifuge running at 3300 rpm: period, T; frequency, f; speed of the tube; centripital acceleration in the tube; g force developed; the force ("weight") of 3.0 grams of water in the tube. The following problems were due before break, so make sure you have them done: 5: COQ 1,2; Q-1, 2,3,5, 6, P-1, 3, 5
HW due Wednesday: also due before finals: 5: Q-4,6,8,9 5: P-2, 5,7,8,11,15 and new problems 5: Q-11 (draw a sketch to show answer), 12, 13, 14; P-69
HW due Friday: 5: Q-15,17,21; P-12,28,29 and show me your Loggerpro analysis of the ping pong cannon. The video is posted as CIMG3549 in FILES. It was shot at 1000 frames per second. Show both the x vs. t and the v vs. t plots.
HW due next Monday: 5: MCQ 1, 2, 3, 5, 7, 8; P: 33,43,45
HW due next Tuesday: Ping pong minilab (see in Files or on J: drive)
goals for this week:
HW due Monday: none.
HW due Tuesday: bring your periodic exams for term 1. I want to see them.
Final exam is 21 November 1:20pm. in the PAC.
I'VE POSTED THE CLASS PRESENTATIONS FOR ALL OUR CHAPTERS.
Between the class notes, the exams, and the web notes on ISMSCIENCE.ORG, you have every clue I can possibly give you on how to do very well on this final. Please use those resources. If you don't understand something, talk to me, use your book, or ask a classmate.
During finals, I am available in my room most of the time. Feel free to study there if you like.
HW due Monday: none. exam 2 in ITL.
HW due Tuesday: analyze this video: http://serc.carleton.edu/dmvideos/players/starry_night.html?hide_banner=true What is the rate of angular motion of the stars? What is the period of the angular motion? Do you know the star at the center?
HW due Wednesday: 5: Q-4,6,8,9 5: P-2, 5,7,8,11,15
HW due Friday: Show me the ping pong cannon solution: 3.0 m tube, 1 atmosphere = 101,000 N/m^{2}, ball diameter = 40.mm, ball mass = 2.7 g. What is muzzle velocity? If you don't have it neatly in your notes, repeat it on paper. shoot and measure the ping pong cannon
HW due next Monday:
we'll work on in class: write a sketch and the key starting equations for each of the classic problems in chapter 2 and 3; write the top 6 definitions or laws for each chapte; write a sketch and the key starting equations for each of the classic problems in chapters 4 and 5 (up through section 5.3); write the top 6 definitions or laws for each chapter
Final exam is Monday 21 Nov in the PAC. Study guide will be handed out this week and will be in FILES.
This week:
this week– ping pong cannon analysis and firing
HW Due Monday: Do these three problems: 1) In an experiment like your recent lab, you found the steel ball landed 85cm from the launch, and you measure v_{o} using video analysis to be 6.44 m/s. Given this data, what is the height of the table launch point? Derive the equations you need starting from the kinematic equations. 2) I throw a ball up in the air and it lands at my feet. The time of total flight is 2.00 s. a) what initial vertical velocity did I throw the ball? b) How high did I throw the ball? c) if the ball landed 3.5m from me, what was the initial horizontal velocity of the throw?
we will cover the effects of g forces on the human body. (NASA report)
Tuesday: solve these versions of the classic problems 4 and 5. yes, you must draw FBDs.
classic 4: you have mass of 65kg. You take your scale to the elevator and stand on it. what is your weight as the elevator goes up at a=0.22m/s^{2}. what is the weight as the elevator goes down at a=0.33m/s^{2}
classic 5: you, with 65kg, jump from an airplane and freefall with air drag of 150. N. what is your acceleration? then you open the parachute, and slow down to a constant falling speed of 8.0 m/s. What is the drag force of the parachute through the air?
HW due Wednesday:study section 5-1&2. 5: COQ 1,2; Q-1, 2,3,5, 6, P-1, 3, 5
HW due Friday: do these problems: 1) I stand on a ramp that is at 25^{o} angle, and do not slip. What is the minimum coefficient of static friction between my shoes and the ramp? Could μ_{s} be greater than this value? 2) The AP class has measured the upward acceleration of the elevator to be 0.2m/s^{2}. So what % increase of your weight do you expereince when you go up? 3) A get away car uses 120HP (horsepower) to rapidly pull away from a bank robbery. The car has mass (including robbers, guns, and money) of 1600kg. What is the car's acceleration? 4) calculate the tension in the rope that we demonstrated in class.
HW due next Monday: none. exam 2 in in the ITL.
next week– ping pong cannon analysis
goals for week:
In files is a summary of chapters 2 and 3. Please read it.
HW due Monday: 4: Q-14, 15,16, 17, 18; P-11, 12,15, 17, 70; play Robot Moving Company (use tab 4), try for max score. Bring in print of your top score. http://phet.colorado.edu/en/simulation/forces-and-motion
HW due Tue: show me your photo of the lab set up with labels written in. Label the ramp, the path, and the carbon paper.
HW due Wednesday: 4: MCQ 1, 3, 7, 8; P- 20,26,37,39,41
HW due Friday: Lab on projectile motion at beginning of class.
conduct cart lab in class
HW Due next Monday: Do these three problems: 1) In an experiment like your recent lab, you found the steel ball landed 85cm from the launch, and you measure v_{o} using video analysis to be 6.44 m/s. Given this data, what is the height of the table launch point? Derive the equations you need starting from the kinematic equations. 2) I throw a ball up in the air and it lands at my feet. The time of total flight is 2.00 s. a) what initial vertical velocity did I throw the ball? b) How high did I throw the ball? c) if the ball landed 3.5m from me, what was the initial horizontal velocity of the throw?
we will cover the effects of g forces on the human body. (NASA report)
Points/objectives this week
Due Monday: 4: Q- 5, 8; P-1 and two problems that are review of chapter 3.
The website posted last week. We see that he jumps 93 inches, but his center of mass we'll assume goes up to 87 inches. Assume he lands back on the ground. How long would he be in the air? I estimate that his forward travel, the Range, is 72 inches. So what is his v_{x} at takeoff? what is the angle θ of his launch?
Also Monday: http://serc.carleton.edu/dmvideos/players/ball_bounced_ac.html?hide_banner=true is a slow motion video of a bouncing ball. Your assignment is to determine v_{x} and v_{y} of the ball as it bounces up off the floor on the launch. You do not need Loggerpro for this.
Due Tuesday: 4: Q-9, 10, 11,12, 13; P-3, 5, 7 Using this video of a car skidding on ice, find the acceleration during the stop. Note that the car starts slowing at 0m on the scale. http://serc.carleton.edu/dmvideos/players/prius_skids.html?hide_banner=true
Due Wednesday: conferences start, no class. If your parents/guardians didn't sign up, please encourage them to drop by and at least say hello.
HW due next Monday: 4: Q-14, 15,16, 17, 18; P-11, 12,15, 17, 70; play Robot Moving Company (use tab 4), try for max score. Bring in print of your top score. http://phet.colorado.edu/en/simulation/forces-and-motion
goals for this week:
Lab update: the video files are located in the J drive and in FILES.
to continue our journey, this app includes the jouney to the smallest places http://htwins.net/scale2/
HW due Monday: (we will do lab 2 in class; bring your lab assignment.) 3: MCQ 7-12; p- 18, 23 (finish the solution to this problem as we did in class, and do this problem experimentally at home; bring a picture to prove you did), write the list of classic problems for chapter 3 in your notebook.
Due Tuesday: before class, have in your possession all the distance data for each run (steel or glass) of lab 2 in a table with your name on it. Bring that and show me. there will be a quiz on one of the first two classic problems in chapter 3 (cannon on the level or car off a cliff); we'll look at HW from Monday.
Also Due Tuesday: in this video, a car is pushed into the river from 18 stories. I timed the fall at 3.2s. I estimate that the car fell 120 feet horizontally away from the building (the range). Using your physics, calculate the height of the fall and the horizontal velocity as it left the building. Report in SI units and in mph (miles per hour).
Wednesday: look at the PHET cannon launch again, and find two different angles of the launch that give the same Range. Write down both angles and bring that to class. https://phet.colorado.edu/sims/projectile-motion/projectile-motion_en.html .
Due Friday: For HW, show me that you have done the loggerpro analysis for the launch velocity of your steel ball off the ramp. The videos are posted in the J:drive under our class (and also in FILES above, but you'll have to download them from the website before you can import them to Loggerpro). If you plan to do the analysis at home, you will need to transport the data to your home via email or a USB-drive or from the website. You should plan on 30 minutes for this work the first time. Look at Using Loggerpro On Videos under Physics Tools for step by step instructions. Also use Help in Loggerpro. You are in the digital generation, so i'm confident that you can figure it out.
Also due Friday: Read sections 4-1 through 4-4; 4:COQ 1; Q-1,2,3,4; if you scored <35 on the bowling ball lab, please come see me by Monday 4pm.
due Monday 4: Q- 5, 8; P-1 and
is a nice ESPN analysis of high jump. The jumping jumper jumps 93 inches, but his center of mass we'll assume goes up to 87 inches. Assume he lands on the same level (even though he really lands on the tall pad). How long is he in the air? I estimate that his forward travel, the Range, is 72 inches. So what is his v_{x} at takeoff? what is the angle θ of his launch?
Also Monday: http://serc.carleton.edu/dmvideos/players/ball_bounced_ac.html?hide_banner=true is a slow motion video of a bouncing ball. Your assignment is to determine v_{x} and v_{y} of the ball as it bounces up off the floor on the launch. You do not need Loggerpro for this.
points this week.
Be able to write the steps for solving projectile problems.
Know the requirements for completing a lab report
Know Newton's first and second laws of motion
Know that force is a push or a pull
to get perspective..... the scale of physics bigger than us....
HW due Monday: 3: Q-10, 17, 18; P-5, 7, 9,11; show, using this physlet, what angle gives the maximum range for a given velocity of cannon. http://phet.colorado.edu/en/simulation/projectile-motion
HW due Tuesday: Lab 1 due. this will count for ~20-25pts on exam 2. (Note, there is a penalty of 2 pts per day for for being late)
HW due Wednesday: 3: Q-11, 20, P-17, 19, 21.
HW due Friday: quiz on the lab 2 (projectile motion of a ball off a ramp) where you should know the setup and the hypothesis;
P- 20, 23, 39, 55, 59, bring your corrections to the exam--write them on a separate sheet and hand them in. Turn in your exam with the corrections.
HW due next Monday: 3: MCQ 7-12; p- 18, 23 (do this problem experimentally at home; bring a picture to prove you did), write the list of classic problems for chapter 3 in your notebook.(you will conduct lab 2 in class; bring your lab assignment)
Points: this is the week you master projectile motion
HW due Monday: practice exam found in files at top. Also,calculate velocity for the lab and then calculate acceleration on the ramp; (the lab report is now due on Tuesday Oct 4); I will post the data in an Excel file and in FILES. You can also see the original Loggerpro data there if you like.
You should be reading chapter 3 and have the first 4 sections reviewed before class on monday. Turn in chapter 3: Q 5-8, P 2,4 and use this physlet to show addition of vectors; http://phet.colorado.edu/sims/vector-addition/vector-addition_en.html
Also, start to play with the projectile motion PHET, although you don't need to print anything. http://phet.colorado.edu/en/simulation/projectile-motion
due Tuesday: 3: MCQ 1, 2, 3, 4, 5, 6. . write out solution to the classic problem "car breaking to a stop, what is a"
due Wednesday :Here is another practice problem for the exam. It would be worth 20 points.
What is the final velocity of a rock that falls 25m for each case below; for each part, solve first in symbolic form, then plug in the numbers.
HW due Friday: exam 1 in the ITL. Recall that the study guide and the practice exam are posted in FILES
HW due next Monday:. 3: Q-10, 17, 18; P-5, 7, 9,11 show, using this physlet, what angle gives the maximum range for a given firing cannon. http://phet.colorado.edu/en/simulation/projectile-motion
The bowling ball lab is due next Tuesday.
points:
HW due Monday: 2: P- 7, 45, 55, 69, 71, be able to draw the first 2 motion graphs (use Moving Man on PHET for help)
HW due Tuesday: write and draw a diagram for the first 4 of the classics in chapter 2. Be able to draw the next 4 motion graphs Find the classics list above.
HW due Wednesday: a one or two-dot problem (that has not already been assigned) from each section in chapter 2. You choose the problems based on the challenge you want. Also, pick problems that look like our list of classics for chapter 2.
HW due Friday: read 3:1-5, hand in 3: COQ; Q:1-4 P:1,3
We will do the lab in class on Friday, so bring your lab sheet
HW due next Monday: practice exam found in files at left. Also,calculate velocity for the lab and then calculate acceleration on the ramp; (the whole report will be due on Monday Oct 3); I will post the data in an Excel file and in FILES. You can also see the original Loggerpro data there if you like.
You should be reading chapter 3 and have the first 4 sections reviewed before class on monday. Turn in chapter 3: Q 5-8, P 2,4 and use this physlet to show addition of vectors; http://phet.colorado.edu/sims/vector-addition/vector-addition_en.html
Also, start to play with the projectile motion PHET, although you don't need to print anything. http://phet.colorado.edu/en/simulation/projectile-motion
For practice taking my exams, I've attached in FILES a practice exam. You can take that before Monday and we will review it.
points:
VECTORS IN DAILY LIFE.........
Warning: this is a critical period for this course. The new concepts such as graphing and defining a problem that we are starting will be used all year. Do NOT fall behind in chapter 2 or 3. If you are not following the material in class or the problems, please come see me!
I have open hours posted, I'm here after school, and we have Physics Study Group friday 5^{th}. Stop by and see me.
Monday: chapter 2: Q 10, 11, 15; P 23, 25, 27, 61, 62. Also for this physlet, http://phet.colorado.edu/en/simulation/moving-man I want you to try many cases of acceleration. Set up a condition where the man moves with negative velocity but positive acceleration, and print that condition of the physlet.
Tuesday: we start the daily measurement.
HW due Wednesday: 2: Q 12, 13; MCQ 4, 6, 9; P: 6, 11, 26, 27
quiz Friday: it will be on chapter 2, sections 1-5. Also, calculate a for the example in class where I gave you x, t, and v_{o} data.
HW due Friday: 2: P: 31, 39, 40, 41 & , The alpine slide at Spirit Mountain travels 3200' along the track from the top to the bottom, and drops 700' vertical in this distance, and requires 1:54 minutes to do so. In SI, report average speed along the track, and average vertical speed.
HW due next Monday: 2: P- 7, 45, 55, 69, 71,be able to draw the first 2 motion graphs (use Moving Man on PHET for help)
next week: bowling ball lab--kinematics
Points:
remember how we talked about how narrow the human experience is....check this out.
HW Tuesday: chapter 1: Q-3, 4; P-3, 4, 5, 23, 43; measure your bedroom, report volume in SI, sig figs;
Quiz Tuesday: scientific notation, sig figs, and a simple calculation.
in class we will measure the thickness of paper
HW due Wed: chapter 1: COQ (chapter opening questions) 1-2 (see page 1). MCQ (MisConceptual Questions) 1,3,5,6
HW due Friday: 2: COQ; Q 1-9; P 1,2,3,4,5,9,17
NOTE: we are now done with chapter 1 in class, although you need alot of practice with sig figs. The slides from class are posted above under Powerpoint ..... You can use them to study and review.
HW due next Monday: chapter 2: Q 10, 11, 15; P 23, 25, 27, 61, 62. Also for this physlet, http://phet.colorado.edu/en/simulation/moving-man I want you to try many cases of acceleration. Set up a condition where the man moves with negative velocity but positive acceleration, and print that condition of the physlet.
NOTE: if you miss completing some HW, you need to do it for the next class.
HW due Monday: 1, read p xviii, read through 1:1-7: web: do physlet below, print one page showing physlet.
We will use many physlets, which are "physics applets". They are cool. Here's the first one assigned for next monday.
special assignment: one-on-one with Dr. F-- come see me by 5 sept -- I need 5 min to ask a few questions and get to know you
HW due Tuesday: Complete both sides of worksheet Sig Figs Practice. Also, take your launch data from last week and determine the maximum velocity shown on the video.
HW Wednesday: use the inside front cover to calculate: density of moon, density of earth, density of sun; report as kg/m^{3}. Do these 6 calculations and manage sig figs. 1. 544300^{2} 2. π + 3 3. π / 3 4. π / 3.00000
5. 1.8x10^{5 } x 4554000 6. 0.004533 + 0.2799 + 20 + 4500
HW friday: 1: p-1, 2, 13, 17, 21, 45; Also, find the file "website assignment" in FILES and do that for today.
HW new for next Tuesday: chapter 1: Q-3, 4; P-3, 4, 5, 23, 43; measure your bedroom, report volume in SI, sig figs
Points for this week:
If you see these stick people then I'm using comics from xkcd.com. He studied physics and worked at NASA before making the world of science and engineering and math funny for us. I will show you quite a few good ones that are rated PG or G.
This is the first week in the course webpage for Physcis at ISM!
This is a blog format, so each week I'll add new assignments and information. YOU MUST LOOK HERE AT LEAST EACH WEEK.
I UPDATE THIS SITE ON SUNDAY NIGHT, USUALLY.
HW due (If my assignment isn't clear then you have the responsibility to clarify and/or correct. Telling me you didn't understand the assignment when it is due WILL NOT BE AN ACCEPTED EXCUSE.)
We will use many physlets, which are "physics applets". They are cool. Here's the first one assigned for next monday.
special assignment: one-on-one with Dr. F-- come see me by 5 sept -- I need 5 min to ask a few questions and get to know you
Week 1 Points: (this is a rough list of what I expect you to learn in a week.)