Embedded Files
http://www.bozemanscience.com/ap-phys-053-rotational-motion (Intro to..)
https://www.youtube.com/watch?v=cB8GNQuyMPc Dr. Lewin demonstrates Moment of Inertia. (14 minutes)
https://www.youtube.com/watch?v=mfyti74lWBw Clarification of how to think about /calculate the T bar moment of inertia problems.
https://www.youtube.com/watch?v=-pBjgaDymD4 (Solving torque problems)
https://www.youtube.com/watch?v=-pBjgaDymD4 (Solving torque problems)
http://www.bozemanscience.com/ap-phys-069-angular-momentum-torque-time (angular impulse)
https://www.youtube.com/watch?v=hgcudPr73LU (Conservation of angular momentum) - a "big idea"
https://www.youtube.com/watch?v=S-UkIA4jenU (Static equilibrium)
https://www.youtube.com/watch?v=49GuRwto-LE (Static equilibrium)
For a review of Simple Harmonic Motion concepts:
https://www.youtube.com/watch?v=iNDRQnhIMK8
https://www.youtube.com/watch?v=nvc78QWnDH4
https://www.youtube.com/watch?v=TBvKNHl8QTA
Mr. Andersen: These two may be too basic. His AP Physics level lectures are not ready yet. But what the heck, right?
http://www.bozemanscience.com/waves
http://www.bozemanscience.com/sound-waves
You do not need to come Thursday for the Green Day D Block final exam unless you want to do more make up work. I am going to reserve that time for Anatomy and Physiology.
You do not need to come Thursday for the Green Day D Block final exam unless you want to do more make up work. I am going to reserve that time for Anatomy and Physiology.
Reminder for the rest of Q4: There are retake options for Ro Mo, SHM, and electricity. For each effort you make, I will add points to your test score. Keep trying!
Reminder for the rest of Q4: There are retake options for Ro Mo, SHM, and electricity. For each effort you make, I will add points to your test score. Keep trying!
The best thing you can do tonight is eat well and get to bed early!
The best thing you can do tonight is eat well and get to bed early!
EXAM info
EXAM info
Section I: Multiple Choice 50 questions, 90 minutes. You may have the equation sheet and a graphing/scientific calculator. You get a 10 minute break between Parts I and II.
Section I: Multiple Choice 50 questions, 90 minutes. You may have the equation sheet and a graphing/scientific calculator. You get a 10 minute break between Parts I and II.
Section II: Free Response 5 questions, 90 minutes. You may have the equation sheet and a graphing/scientific calculator.
Section II: Free Response 5 questions, 90 minutes. You may have the equation sheet and a graphing/scientific calculator.
At the VERY bottom of this page, I have linked two short documents that describe the expectations for the paragraph-length response and the uncertainty question in the free response section. READ AND HEED! Not surprisingly, they are titled "uncertainty-text.pdf" and "paragraph-length-response.pdf"
April 29: http://www.tandftechnology.com/Physics/APPrograms/AP150.html
A review of the most important concepts on the exam.
Hey! These are easy to go through. Low stress. If you select the Youtube videos, he coaches you how to solve each one. They are each only 1-2 minutes long. Might be a great 'warm up' the night before.
For a review of Simple Harmonic Motion concepts:
https://www.youtube.com/watch?v=iNDRQnhIMK8
https://www.youtube.com/watch?v=nvc78QWnDH4
https://www.youtube.com/watch?v=TBvKNHl8QTA
For a review of Electricity concepts (series and parallel circuits) - goes nicely with the Giancoli free-response questions
https://www.youtube.com/watch?v=CZgqGTxL9cA
FYI: I posted NM's question on the AP teachers discussion page. I'll keep you apprised of any responses I get. And the answer is..
That would typically be well-regarded by the Readers and might earn full credit.
Now, if you look at recent rubrics, you will notice that for questions requiring numeric answers, the following holds. If the numeric answer for Part b depends on a number from Part a, the rubric for Part b will generally not include a point for the correct answer. Rather, the points for Part b will be based on the setup, the substitution, and perhaps the units. This is to keep the Readers from having to grade with a calculator and follow the students' wrong answers along.
I'll explicitly tell my students that if they can't get a number for Part a, come up with something (with a correct unit) or make an answer up. They can still get full credit for Part b. The exception to this technique is if the invented number makes the rest of the problem trivial (v = 0) or the invented number is clearly non-physical (such as v > c)
Monday, April 27: Complete the Electricity Unit multiple choice and free response questions handout from Giancoli. Practice writing the concepts and relevant equations down before you start crunching numbers. For a HW grade or... a test grade if you do it especially well!
ALSO: good practice: take any free response problem you've done this year (hopefully still in your binders) and attack it "fresh" by writing the relevant concepts and equations out, like we did in class today. Do come by for more Giancoli concept summaries: Motion and Force/Gravity; Rotational Motion; Work and Energy/Momentum.
This just in from Mary Martin: Your cost for the AP test is $45. Bring your money to Mary. If you are eligible for free or reduced-cost meals, your test is FREE.
Friday morning, April 17, A Block: 2008 AP Physics B FR Q1 and Q2; Form B FR Q1 and Q2. Answers and explanations. Snacks provided. Can't make it? Pop by later.
Mr. Andersen comes through again! Just posted:
http://www.bozemanscience.com/ap-phys-069-angular-momentum-torque-time (angular impulse)
https://www.youtube.com/watch?v=hgcudPr73LU (Conservation of angular momentum) - a "big idea"
https://www.youtube.com/watch?v=ayv0MoCgtlk (Center of mass)
https://www.youtube.com/watch?v=2E9fY8H6O1g (Conservation of linear momentum) - a "big idea"
http://www.varsitytutors.com/ap_physics_1-diagnostic-tests
Recommended by an AP Physics teacher on our community blog. You do these free "diagnostics" to determine where you are weak so you can focus your review. You can take mixed topic tests or focused topic tests. A great way to study over the break.
The great Boris Korsunsky brings you excerpts from "Trophy Wives Don't Need Advanced (Placement) Physics"
The great Boris Korsunsky brings you excerpts from "Trophy Wives Don't Need Advanced (Placement) Physics"
Semester 2: Assignments are due the next time class meets.
Semester 2: Assignments are due the next time class meets.
Tuesday, April 13: For more MC practice:
http://prettygoodphysics.wikispaces.com/home Click on the topic you want questions on in the grey box to the left. When you get to that page, scroll down to the very bottom. You will see a heading like "Physics 1 (topic) Problem Set." Open that up.
Friday, April 10: Work an "old AP Physics B" exam.
Wednesday, April 8: I will be away at a conference. Sorry about that. You will continue the same practice we did Monday. On your own - talk with your group - open up to the class. I will have the handouts ready. Elect a time-keeper. Your substitute teacher is the key-master. She will feed you the answers at the right time. You may not have a copy of the answers.
HW: Work an "old AP Physics B" exam (looks like it wasn't handed out.)
Monday, April 6: Work Practice Test as far as possible. Review momentum (linear and angular) because they came up a few times today. I will look for "look-alike" problems that you can do in follow up. ALSO: Be thinking about when, how, where, what you want to do for extra review.
NEW Rotational Motion and SHM quizzes are ready for those desiring a retake. Please do ASAP, if interested.
Fri, April 3: Start reviewing your old quizzes and problem sets to identify the areas you need the most reviewing or relearning.
Re-watch (or watch for the first time :)) Doc Schuster assigned last Friday if circuit analysis is still baffling you.
Fri, Mar 27: https://www.youtube.com/watch?v=CZgqGTxL9cA
Doc Schuster solves series and parallel problems. He does good a good job!
https://www.youtube.com/watch?v=TdCuu-4wm44
Doc Schuster solves Kirchhoff's Rules problems.
Wed, Mar 25: http://phet.colorado.edu/en/simulation/circuit-construction-kit-dc-virtual-lab In-class circuit building to study what happens to V, I and R in parallel circuits vs. series circuits.
Mr. Andersen teaches you electricity:
https://www.youtube.com/watch?v=yUPdtFqilXo Coulomb's Law - sorry about the chemistry focus on this one
https://www.youtube.com/watch?v=8RJ6Kdk8KDo Electric Circuits
https://www.youtube.com/watch?v=x2EuYqj_0Uk Series and Parallel Circuits (pHet!)
https://www.youtube.com/watch?v=paDs-Hnmklo Kirchhoff's Loop Rule
https://www.youtube.com/watch?v=Rgl4OAm9tnU Kirchhoff's Junction Rule
Mon, Mar 23:
(1) Complete your lab write-up. (Ohm's Law - the data table, the graph and your conclusions about what slope represents, and the relationship between I, V and R.
(2) Knight problems 26-36 (Ohm's Law). It will help you to know that Volts express Work per unit charge(Q) and Current (I) is the rate of charge (Q) flow.
Thurs Mar 19
Do Physics Classroom Lesson 3: Resistance
http://www.physicsclassroom.com/class/circuits/Lesson-3/Journey-of-a-Typical-Electron
http://www.physicsclassroom.com/class/circuits/Lesson-3/Resistance
http://www.physicsclassroom.com/class/circuits/Lesson-3/Ohm-s-Law
http://www.physicsclassroom.com/class/circuits/Lesson-3/Power-Revisited
Tues, Mar 17-Tues, Mar 31 - Current Electricity Unit
The best, most direct, most time-saving learning resource is physicsclassroom.
Get on line and do these tutorials before you come to class. For tomorrow (Mar 17), I will get you started then you should go through Lesson 2: Electric Current by Thursday's class. Have no fear: this is VERY CONCEPTUAL
http://www.physicsclassroom.com/class/circuits/Lesson-2/What-is-an-Electric-Circuit
http://www.physicsclassroom.com/class/circuits/Lesson-2/Requirements-of-a-Circuit
http://www.physicsclassroom.com/class/circuits/Lesson-2/Electric-Current
http://www.physicsclassroom.com/class/circuits/Lesson-2/Power-Putting-Charges-to-Work
Wed, Mar 12: Introduction to Electrostatics. Do the tutorials provided in http://www.physicsclassroom.com/class/estatics. These are exceptional!! There are four lessons. If you read these and do the problem sets you are ready to go. On Monday I will expect you to be able to apply Coulomb's Law and draw field lines.
Mon, Mar 10: You will need to find time outside of class to complete your quiz.
Fri, Mar 6: Lab books are turned in. You are working on a set of simple harmonic motion problems. You have already worked through the sound problem set Thursday.
***Monday:a quiz on concepts of SHM and Sound, followed by problem solving.
http://www.learnapphysics.com/apphysicsc/rotational_motion.php This is the site that provided the rotational motion problems. The key is there as well. Check your answers.
Monday, March 2: Por favor, classe, do those three AP exam free response questions on sound experiments so I can give you the keys on Thursday and talk about them. (We'll also go over your discoveries with the pHet.) Very realistic of what you will face in May. Thursday is our last day on SHM and waves. I have some old AP SHM for you, too. Following week: SHM/Wave quiz and on to Electricity!
FYI: Thurs March 12 and Fri March 13 I will be in Boston at the AP Institute. You'll have plenty to do on one of those days!
Thurs, Feb 26: http://phet.colorado.edu/en/simulation/wave-on-a-stringExamine boundary behavior with this simulation. You have a one-page worksheet to go with it. You also have a one-pager that helps you practice the basic calculations around strings and pipes. You also also have a set of 3 old AP problems about sound experiments. I urge you to do those - good to practice this kind of question and it will also make you smarter on sound topics, too. You also also also have a larger packet of rotational motion ("ro-mo") problems to use as practice for the retake, whenever that is (before the end of Q3!!)
Thurs, Feb 26: http://phet.colorado.edu/en/simulation/wave-on-a-stringExamine boundary behavior with this simulation. You have a one-page worksheet to go with it. You also have a one-pager that helps you practice the basic calculations around strings and pipes. You also also have a set of 3 old AP problems about sound experiments. I urge you to do those - good to practice this kind of question and it will also make you smarter on sound topics, too. You also also also have a larger packet of rotational motion ("ro-mo") problems to use as practice for the retake, whenever that is (before the end of Q3!!)
Tues, Feb 24: Be sure to document your speed of sound experimentation in your lab books: Purpose, Hypothesis, summary of your Procedure, Data, Analysis (if you can), and Conclusion. Thursday you are finishing data collection and looking at wave boundary behavior, either with hands-on or a pHEt. I also have some nifty sound FR questions from old AP. I think you will like them. You can pick those up before Thurs if you wish! Don't forget that the solutions to all the HW over the break are in the AP Physics Box.
Tues, Feb 24: Be sure to document your speed of sound experimentation in your lab books: Purpose, Hypothesis, summary of your Procedure, Data, Analysis (if you can), and Conclusion. Thursday you are finishing data collection and looking at wave boundary behavior, either with hands-on or a pHEt. I also have some nifty sound FR questions from old AP. I think you will like them. You can pick those up before Thurs if you wish! Don't forget that the solutions to all the HW over the break are in the AP Physics Box.
Fri, Feb 13: Strategies to learn your wave concepts
Fri, Feb 13: Strategies to learn your wave concepts
http://www.physicsclassroom.com/class/waves
http://www.physicsclassroom.com/Physics-Interactives/Waves-and-Sound
If you go through all five Lessons, you will be a rock star on the concepts. Remember that Physics Classroom lessons all start with a review of the prior lesson or section. Don't let that annoy you. Just speed read to the point you find the new info. If you LIKE a "running start", by all means, take it slow and read everything.
Hecht HW problems - handout provided in class.
Giancoli online practice problem sets. This link should take you to the Chapter 11 Vibrations and Waves chapter. Click on Practice Problems box in the left margin. These are reasonable. Read the directions for how to get help while you are working them, and how to get feedback. You can then go on to Chapter 12 Sound.
http://wps.prenhall.com/esm_giancoli_physicsppa_6/17/4354/1114633.cw/index.html
Walter Lewin: Introductory Lecture on Waves and Vibrations
https://www.youtube.com/watchv=KgLYi2acPDI&list=PLUdYlQf0_sSsdOhQ_8jfrAGzbGbJ7MXGe (1:18:00) Many demos on this one!
Lewin: Traveling waves, sound waves, and energy in waves
https://www.youtube.com/watch?v=Tul2JfUEnpA&index=9&list=PLUdYlQf0_sSsdOhQ_8jfrAGzbGbJ7MXGe
Lewin: Musical Instruments- starts out with simple algebra - stuff you need to know; demos are great
https://www.youtube.com/watch?v=HHnSZaPcfdo&index=10&list=PLUdYlQf0_sSsdOhQ_8jfrAGzbGbJ7MXGe
Mr. Andersen: These two may be too basic. His AP Physics level lectures are not ready yet. But what the heck, right?
http://www.bozemanscience.com/waves
http://www.bozemanscience.com/sound-waves
Be sure you look at this entire web page. It completely explains the Ranking Exercises we did Friday. Also, Chladni patterns, while not on the AP exam, are very interesting. Lewin demos these as well.
http://www.animations.physics.unsw.edu.au/jw/SHM.htm
Fri, Feb 6:
http://www.animations.physics.unsw.edu.au/jw/SHM.htm
http://www.bozemanscience.com/ap-phys-044-simple-harmonic-motion
(Mr. Andersen explains it all. " Look, Ma! No calculus!")
He also links you to the two pHets he demos. Try them yourselves!
Do the Sample Short Answer Problem prepared by the College Board.
You should also be able to complete the write up of your pendulum lab for Tuesday.
Wed, Feb 4: You embarked on a new Guided Inquiry Lab, but got away without a homework assignment. We can't have that! How about a vodcast?
https://www.youtube.com/watch?v=7FfKaIgArJ8 Dr. Lewin and a very heavy pendulum. And here is a related 49 minute lecture:
https://www.youtube.com/watch?v=Ug8Oz0u7rZ0
IT IS REALLY WORTH WATCHING THE WHOLE THING because he does several demos, including one that is just as thrilling as the four minute segment above. CLASSIC LEWIN.
Fri, Jan 30:
(1) Take home exam on rotational motion. You may use the sheet provided with equations. You don't use any other "helps." Due back Tuesday.
(2) Read pages 344- middle of 354 in Hecht (Sections 10.5 through 10.7). Do the problems at the end of the chapter #s 65, 67, 69, 73, 76, 80, 117, 118, 119.
Thurs, Jan 29: Watch this and blow your mind. https://www.youtube.com/watch?v=iWSu6U0Ujs8 You're welcome :)
Wed, Jan 28: Solve Knight problems. Finish lab Friday. Test Tuesday. I will provide you a "practice test" by Friday.
https://www.youtube.com/watch?v=mfyti74lWBw Clarification of how to think about /calculate the T bar moment of inertia problems.
Fri, Jan 23: (1) Ranking Exercises (2) Giancoli Review packet (3) Knight Angular Momentum problems (linked at the bottom - "AngularMomentum HW.pdf"). You can substitute Hecht if you wish: read pp 259-265; problems 160-163; 166, 169.
For your angular momentum lab, I=mr2.
I=moment-of-inertia; m=mass of the weights; r= radius; L=length of the rod.
For one rod with weights of mass (m) at both ends, I= m(L/2)2 + m(L/2)2 = mL2/2 (units kg-m2). You would multiply this value for every additional "two-headed rod."
Usually, problems assume a massless rod because it is so much lighter compared with the weights. In our case, that may not be true. Take a look at the problems we've been solving to see how to include the rod in the calculations.
Wed, Jan 21: Read Knight section 12.8 and work through the sample exercises on paper yourself. Do problems 28-31, which are in a handout you already have.
Doc Schuster has two (at least) good vodcasts on solving these kinds of problems:
https://www.youtube.com/watch?v=S-UkIA4jenU
https://www.youtube.com/watch?v=49GuRwto-LE
They are each about 10 minutes in length.
Homework for the long weekend: Jan 16-20: You should have picked up a handout "Rotational Dynamics Lab" with a data table showing three trials each for 5 masses dropped while attached by a string to a pulley. Your task is to analyze these data following steps 1 through 6 described in the Rotational Dynamics handout page 4, section 5.1 Small Pulley. (Just like you did for the last Board Meeting.) Obviously, you need to record your information on separate paper b/c I have your lab books.
Homework for the long weekend: Jan 16-20: You should have picked up a handout "Rotational Dynamics Lab" with a data table showing three trials each for 5 masses dropped while attached by a string to a pulley. Your task is to analyze these data following steps 1 through 6 described in the Rotational Dynamics handout page 4, section 5.1 Small Pulley. (Just like you did for the last Board Meeting.) Obviously, you need to record your information on separate paper b/c I have your lab books.
Jan 13: https://www.youtube.com/watch?v=-pBjgaDymD4 - take notes, plus do the HW from last night if you haven't already
Jan 13: https://www.youtube.com/watch?v=-pBjgaDymD4 - take notes, plus do the HW from last night if you haven't already
Jan 12: Mr. Andersen vodcast on Torque
Jan 12: Mr. Andersen vodcast on Torque
Read Knight section on Torque (handout). Try one or two of the example problems without looking at the solution.
Jan 9: Read Knight section 12.4 (Moment of Inertia - new single page handout) Do problems 13-17, which are part of the handout you already have.
Jan 9: Read Knight section 12.4 (Moment of Inertia - new single page handout) Do problems 13-17, which are part of the handout you already have.
Jan 8: Read Knight sections 12.1-12.4 (the first two sections review what you learned in Chapter 4). Do problems 1-12.
Jan 8: Read Knight sections 12.1-12.4 (the first two sections review what you learned in Chapter 4). Do problems 1-12.
https://www.youtube.com/watch?v=cB8GNQuyMPc Dr. Lewin demonstrates Moment of Inertia. (14 minutes)
Jan 7: Read Knight section 4.7 (nonuniform rotational motion & angular acceleration) and do problems 27-35.
Jan 7: Read Knight section 4.7 (nonuniform rotational motion & angular acceleration) and do problems 27-35.
Jan 6: Read through the Knight sections 4.5 and 4.6. Do problems 19-26. Tomorrow you will do a pHet called Lady Bug Revolution.
Jan 6: Read through the Knight sections 4.5 and 4.6. Do problems 19-26. Tomorrow you will do a pHet called Lady Bug Revolution.
Jan 5: Read Hecht sections 8.1-8.2. Do problems on p271 9, 10, 11, 15, 18, 20
Jan 5: Read Hecht sections 8.1-8.2. Do problems on p271 9, 10, 11, 15, 18, 20
http://www.bozemanscience.com/ap-phys-053-rotational-motion Take notes, of course.
If you need more review/help on momentum, impulse, conservation - watch these:
http://www.bozemanscience.com/ap-phys-049-momentum
http://www.bozemanscience.com/ap-phys-050-impulse
Jan 2: Gradebook is up to date. Good news for all. Are you doing your HW? Get ready to hit the ground running next Monday: We will summarize our conclusions from the collision lab and get our hands on rotating objects.
Jan 2: Gradebook is up to date. Good news for all. Are you doing your HW? Get ready to hit the ground running next Monday: We will summarize our conclusions from the collision lab and get our hands on rotating objects.
Holiday Break information I don't want you to get rusty so I am assigning some strategy reading and practice problems from each chapter we have done so far. If you do 2 or 3 problems each day, starting on 12/26, you will have them all done by Mon, Jan 5!
Holiday Break information I don't want you to get rusty so I am assigning some strategy reading and practice problems from each chapter we have done so far. If you do 2 or 3 problems each day, starting on 12/26, you will have them all done by Mon, Jan 5!
Make sure you are doing "Problems" and NOT Discussion Questions or Multiple-Choice.
Make sure you are doing "Problems" and NOT Discussion Questions or Multiple-Choice.
Hecht Chapter 1 page 17: Read & heed the section entitled "Suggestions on Problem Solving" (I will abbreviate as SOPS from now on). No problem assignment.
Hecht Chapter 1 page 17: Read & heed the section entitled "Suggestions on Problem Solving" (I will abbreviate as SOPS from now on). No problem assignment.
Hecht Chapter 2 pp 46-47: Read & heed SOPS. No problem assignment.
Hecht Chapter 2 pp 46-47: Read & heed SOPS. No problem assignment.
Hecht Chapter 3 pp 78-79: Read & heed SOPS. Problems 124,125.
Hecht Chapter 3 pp 78-79: Read & heed SOPS. Problems 124,125.
Hecht Chapter 4 p 128: Read & heed SOPS. Problems 22; 121,122; 130,135. (The last two apply physics to human anatomy)
Hecht Chapter 4 p 128: Read & heed SOPS. Problems 22; 121,122; 130,135. (The last two apply physics to human anatomy)
Hecht Chapter 5 p 166: Read & heed SOPS. Problems 75, 79.
Hecht Chapter 5 p 166: Read & heed SOPS. Problems 75, 79.
Hecht Chapter 6 p 202: Read & heed SOPS. Problems 27,28,29; 105,106,107. (The last group also applies physics to human anatomy)
Hecht Chapter 6 p 202: Read & heed SOPS. Problems 27,28,29; 105,106,107. (The last group also applies physics to human anatomy)
Hecht Chapter 7 p 229: Read & heed SOPS. Problems 46,47,48; 67,68,69.
Hecht Chapter 7 p 229: Read & heed SOPS. Problems 46,47,48; 67,68,69.
Week 18: You will be reading text sections and solving problems in Hecht this week. Make sure you have the text where you do your Physics HW.
Week 18: You will be reading text sections and solving problems in Hecht this week. Make sure you have the text where you do your Physics HW.
Mon, Dec 22: Complete analysis & conclusions of the collision data. Be ready to have a brief Board Meeting tomorrow.
Fri, Dec 19:
https://www.youtube.com/watch?v=OuA-znVMY3I (Giant Newton's Cradle-Mythbusters)
Ranking Exercise problem
Study the Knight pages (handout) so that you can interpret the pictorial representations of momentum.
Set up your lab book to do the Vernier lab on Monday. Purpose/Question/Brief statement of methods/Data tables.
Thurs, pHet collisions lab http://phet.colorado.edu/en/simulation/collision-lab
(in-class activity) The directions are linked at the bottom of this page (PhET_Collision_Lab.doc).
HW:
(1) Look at the cartoon on my home page. Answer these questions (full sentences, proper English) in your lab book:
(a) If these children were, instead, steel balls, what would you expect to observe (visual, auditory) when the teacher released the one he was holding?
(b) Explain the physics reasoning for your answer.
(c) Now, answer the same two questions for the actual situation: children. How would the result be similar or different?
(2) New question: Why don't we break both of our femurs, tibiae and fibulae ("leg bones") every time we jump up and down?
Wed, Dec 17: Momentum problems in Hecht:
p230 odds 1-13
pp231-232 33,34,35,53,54
Tues, Dec 16: WEP quiz tomorrow. Here is the Energy Skate Park to sharpen your graph interpretation skills: http://phet.colorado.edu/en/simulation/energy-skate-park
Mon, Dec 15: Use your various problem sets - especially Giancoli, the ranking tasks and graph interpretations - to prepare for the WEP quiz on Wednesday. Tomorrow I will give you some additional graph practice. Bring questions. Then we will jump into a collision lab.
Fri, Dec 12: Complete the Work-Energy multiple choice and free response problems worksheet. Complete the concept review activity (word bank - fill in the blank). Both due Monday. (Sorry you don't have your lab books for this.) Monday-Tuesday is for additional demonstrations, finishing up retakes, & reviewing the answers to the homework. Plan for a work-energy quiz Wednesday, at the latest.
Thurs, Dec 11:
Reminder: Lab Books due this Friday. Have the answers to the prompts for Loop and Launch neatly done and well labeled so that I can give you full credit.
Reminder #2: Retake quizzes Friday.
Wed, Dec 10: https://www.youtube.com/watch?v=ZzwuHS9ldbY
Khan Academy: Introduction to Springs and Hooke's Law -Take notes
Mon, Dec 8: https://www.youtube.com/watch?v=C8a8jyihz8s Conservative vs. Nonconservative Forces
Fri, Dec 5: Read Hecht Ch 7 (Momentum and Collisions) pages 209-224. Study the sample problems. Hint: Don't wait until Sunday night to do this!!! Do a little bit every day. Start tonight!
Thurs, Dec 4: No new assignments. (You can start your weekend homework tonight, if you wish.)
Wed, Dec 3: AP1 WEP problems tonight.
Tues, Dec 2: Coaster activity in process. Keep practicing problems involving work and energy. I have attached some AP-like problems at the bottom of this page. (AP 1 WEP.pdf)
Mon, Dec 1: Compare the solutions to your HW problems with your answers. Bring questions about this HW tomorrow. (Roller coaster activity in progress.)
Tues, Nov 25: Happy Thanksgiving!
Read Sections 6.3 and 6.4 in your text.
Answer Discussion Questions 9,10,14.
Answer Problems 51, 52, 53, 55, 56, 57, 58;73, 74, 75, 77, 80.
Due Monday, Dec1.
Mon, Nov 24:
(1) Look over your circular motion quiz. Bring questions tomorrow.
(2) Do the 2nd and 3rd page of the worksheets before tomorrow.
Fri, Nov 21: Worksheets are for class. Don't do them for homework this time.
HW: Hecht pp 200-203, Discussion Questions 2,3,4,5; Multiple Choice 1,2,3,4,5; Problem 5.
Thurs, Nov 20
Energy, Work and Power (Mr. Andersen) (3:41) Take notes.
https://www.youtube.com/watch?v=pDK2p1QbPKQ
Wed, Nov 19: Read Hecht pages 171-183 (Ch 6 Energy). Do problems 1 through 13 odd, 33, 35, 37, 38. You can continue your exam tomorrow in class.
Tues, Nov 18: Quiz tomorrow. Four or five multiple choice questions. One Free Response. MC will come from Ch 5 Hecht or Ch 5 Giancoli MC questions. FR will be an old AP Physics exam question on horizontal circular motion (revolution of an object on a disk. The Ranking Exercise we did today is quite relevant for the FR). Some extra credit questions will appear.
Bonus video: https://www.youtube.com/watch?v=8mjkPf5rucY
Mon, Nov 17: Today we will experiment with a pHet called My Solar System, where you will derive an expression for G and equations for speed and for the period of an object in a circular orbit.
HW: Complete a Giancoli Review packet (concepts and problem solving)
http://www.pbs.org/wgbh/nova/physics/einstein-thought-experiments.html
Tuesday: Review of the key concepts of circular motion (motion on a curve, orbits) and universal gravitation.
Wednesday: Quiz (we gotta keep movin', folks!)
Fri, Nov 14: Watch the Mechanical Universe episode on Kepler's Laws (will be posted) - Didn't find it, never mind.
Hecht; Read Sections 5.5 + 5.6
Problems 62, 63, 66,67,68,75,76
Thurs, Nov 13
Read Hecht Sections 5.3 and 5.4
Do Problems 31, 37,41,45,46,47 on pages 168-169
Answers to last night's HW posted at the bottom of this page. The files are called Solutions_to_Problems_11/10/2014, Solutions_p2, Solutions-p3, and Solutions_p4. They are in .odt format (Open Office) - should be usable by any PC or Mac with word processing software.
Mon, Nov 10: Conceptual Questions (Knight handout) 1-10 and Problems 42, 43, 44, 47.
Answers to the multiple choice questions: 1d, 2d, 3e, 4e, 5a, 6d, 7b, 8d
Fri, Nov 7: This video is called "Wall of Death." Your challenge is to explain - in your lab book - the forces involved and why these people seem to defy gravity, not to mention death. We will watch this in class, also.
https://www.youtube.com/watch?v=31MMw3Eazqw
Oh, and do the Multiple Choice problems 1-8 in Ch 5 Hecht, p 165, in your lab book.
Thurs, Nov 6: https://www.youtube.com/watch?v=tLNa1lHynGM FBDs and circular motion (7:00). Follow his directions. When he asks you to pause the video to work the problem, do it. Copy the problems in your lab book and solve them.
Wed, Nov 5: Hecht pages 166-167 problems 3,4,5,6,7,11,14,17,18, 19. Be prepared to show and justify your answers tomorrow.
Tues, Nov 4: Watch these videos. With each one, imagine what you would feel in that situation. Think about why you would have those sensations.
"Wall ride" - start at minute 3:00. A minute of this is probably enough.
https://www.youtube.com/watch?v=rcjjTcZQ7Yg
"Insane G-Force Airplane Ride." Watch this one with the sound off.
https://www.youtube.com/watch?v=TmQ-Ha-aLEY
Tea cup ride at Astroland Amusement Park (they do cut away to other things....keep watching!)\
https://www.youtube.com/watch?v=n2T67kkNbxg
Centrifuge https://www.youtube.com/watch?v=PsLGX-RbKuQ
DR LEWIN!!!! You are cruising through looking for his demos - lettuce drier, water in a bucket. Demos start about minute 42:00.
Mon, Nov 3: Quiz tomorrow - one inclined plane problem, one pulley problem. At the bottom of this page you will find an upload called Solutions110314 which are the answers to the two problems you did in class today.
This is Week 10, the last week of Quarter 1. Friday is the last day to submit anything for Q1. Anyone who wants to retake the 2-D Kinetics quiz on Friday should let me know ASAP. We will also take a practice test on Dynamics Monday.
This is Week 10, the last week of Quarter 1. Friday is the last day to submit anything for Q1. Anyone who wants to retake the 2-D Kinetics quiz on Friday should let me know ASAP. We will also take a practice test on Dynamics Monday.
Oct 31:Study for a practice Dynamics quiz Monday. Skills you will demonstrate: FBD; determining values of Fg, Fn, Ff, Ft; system with zero acceleration; system with nonzero acceleration.
Thurs, Oct 30: Do your Giancoli HW problem packet. Good practice for the "practice" dynamics test tomorrow. Tomorrow is also the day for anyone who wants to retake the 2-D Kinematics test to do so. The grade you get this time will replace your old grade.
Wed, Oct 29: Static equilibrium problems in your textbook. pp 136-137 #110-120.
Tues, Oct 28: Two vodcasts today: One to present the strategy, the second to practice problem solving - forces on an inclined plane.
https://www.youtube.com/watch?v=TC23wD34C7k: Khan Academy "Inclined Plane Force Components" (9:30)
https://www.youtube.com/watch?v=VoZShcDXLvA Mr.Post Inclined Plane Practice Problems. Oopsy! Did you catch Mr.Post's mistake???
Mon, Oct 27:
(1) Look over the answer key to the HW problems. Bring questions Tuesday.
(2) Complete the Ranking Tasks worksheets for tomorrow. You will be entering them with the clickers.
(3) New lab in progress.
Fri, Oct 24: As reported on the Wheasel, weekend HW is Hecht pp 134-135 problems 83-89.
Thurs, Oct 23: https://www.youtube.com/watch?v=i90-x5Tbnlc
Doc Shuster does Static Friction.
Be ready to work on friction down an inclined plane and on a flat surface Monday.
Wed, Oct 22: Sorry, folks. Take the night off.
Tues, Oct 21: https://www.youtube.com/watch?v=S-UkIA4jenU
Doc Shuster: Static Equilibrium (9:48)
WWIT!!!!????
https://www.youtube.com/watch?v=ZqkV-4rHc4I
Doc Shuster: Kinetic Friction (12:00)
Mon, Oct 20: Read Hecht pages 107-111. Work through for yourself the Example problems 4.7, 4.8, 4.9.
Fri, Oct 17: Lab books in today.
https://www.youtube.com/watch?v=jucqtMqyVww - Doc Shuster, "Four Weighty Problems" (28:56) - gives you plenty of explanation and practice .. OR..
https://www.youtube.com/watch?v=a0KVxh8iPP4 - Dan Fullerton (6:28)
Thurs, Oct 16: (1) Be sure you have read through pages 92-107, especially section 4.7 on coupled motions - quite relevant to your new inquiry lab.
(2) Do problems 46, 47, 49, 50, 55, 57, 58, 62.
Wed, Oct 15: Hecht pp 129-131: Problems 11, 13, 24, 25, 29, 30, 31, 39, 40.
Tues, Oct 14: https://www.youtube.com/watch?v=AfQEEymfzaI Watch and be ready for clicker questions tomorrow.
Fri, Oct 10:
Recommended watching by AW: https://www.youtube.com/watch?v=ZMByI4s-D-Y
Watch the bozemanscience vodcasts - three laws,momentum & FBDs (URLs below)
In Hecht: after having read the pages assigned on Oct 8, now it's time to try some problems: Pages 128-9 Problems 1-10.
Thurs, Oct 9: Watch this program. Choose a topic to take notes on: (1) Newton's key scientific and mathematical discoveries OR (2) Newton's religious journey OR (3) Newton's work in alchemy. Whatever you decide, you need to watch the whole program.
http://www.pbs.org/wgbh/nova/physics/newton-dark-secrets.html
We will discuss tomorrow.
Wed, Oct 8 and the days ahead:
Newton's Laws, Momentum, Force, Friction, and FBDs (Chapter 4 Hecht)
http://www.bozemanscience.com/newtons-three-laws-of-motion
http://www.bozemanscience.com/momentum
http://www.bozemanscience.com/free-body-diagrams
http://www.bozemanscience.com/ap-physics/
Tonight, Oct 8: Read Hecht pages 85-92. Pay special attention to the images, boxes, quotes in the margins, all that stuff!
Tues, Oct 7: Quiz tomorrow. Same format, but less "involved" free response questions. There will be 3-4 multiple choice. You can have ALL of your equations in front of you. Wed: ON TO NEWTON'S LAWS!!!!
Mon, Oct 6: Quiz on Projectile Motion Wednesday. Be sure you can do projectile motions in all of their variations. We will review in class today and tomorrow.
Fri, Oct 3: (1) Projectile Motion AP exam practice packet. Finish up for Monday.
(2) If you have not presented a Board Meeting for Projectile Motion pHet, figure out with your partner(s) how you will accomplish the task and share your plan with me.
(3) More help with projectile motion problems!
http://bowlesphysics.com/images/AP_Physics_B_-_Projectile_Motion.pdf (problems with step-by-step solutions)
https://www.youtube.com/watch?v=whXD450isic (vodcast - Dan Fullerton)
One thing to note about his vodcast: he considers "down" as the positive direction. Don't let that throw you. As long as you are consistent with the sign for up and down, you will get the same answers. For instance, I prefer to call "down" negative. That means that g has to be negative as well. (Mr. Fullerton will call g positive.)
Thurs: A place kicker kicks a football with a velocity of 20.0 m/s
and at an angle of 53 degrees.
(a) How long is the ball in the air?
(b) How far away does it land?
(c) How high does it travel?
Tues, Sep 30 and Wed, Oct 1
http://phet.colorado.edu/en/simulation/projectile-motion
Mon, Sep 29: Rework vector and 2-D K problems "from scratch" (without looking at your notes or the answer) to assure yourself that you can do them. Ditto HW for 9/30 and 10/1.
I will be away on a site visit for the next 2 days. You will be doing a projectile motion inquiry task using a pHet animation. Use the same partners as last time. Board Meeting will take place on Thursday.
Week 5: You will be reading text sections and solving problems in Hecht this week. Make sure you have the text where you do your Physics HW.
Week 5: You will be reading text sections and solving problems in Hecht this week. Make sure you have the text where you do your Physics HW.
Fri, Sep 26: Sorry we lost our class time today. The retake of the 1-D kinematics will finish up on Monday. Meanwhile, you are now working on the other sheet of homework questions. Don't forget to check out physicsclassroom.com. The animations include a "monkey shoot." My expectation is that you will come to class Monday having tried all of the homework problems on the two sheets that relate to 2-D K or vectors. Remember that the 2-D K questions start at the bottom of the first column under the heading "Problems." Do not attempt the circular motion problems yet.
Thurs,Sep 25: Problem sets from Knight: you decide what you need most tonight: vector practice or projectile motion. Good news: whatever you choose tonight, you get to do the other set tomorrow:). FYI: An interactive site for more practice of these skills is www.physicsclassroom.com. Look for the index on the left hand side.
Wed, Sep 24: Tonight's problem is a sample AP Physics B question having to do with projectile motion.
Mon, Sep 22 & Tues, Sep 23: Hecht Chapter 3, pages 68-75; problems 81, 82, 83, 93,94, 103, 105, 106, 119,120,121. Due Wednesday. (projectile motion)
9/23: How are these problems going? .... In class, you will be collecting data and starting your Board Meeting presentations. Board Meeting is TOMORROW:)
9/23: How are these problems going? .... In class, you will be collecting data and starting your Board Meeting presentations. Board Meeting is TOMORROW:)
Week 4: You will be reading text sections and solving problems in Hecht this week. Make sure you have the text where you do your Physics HW.
Week 4: You will be reading text sections and solving problems in Hecht this week. Make sure you have the text where you do your Physics HW.
Fri, Sep 19: Do what you need to do to learn vector addition. I will either find a better vodcast or I will make my own! (TBA)
Fri, Sep 19: Do what you need to do to learn vector addition. I will either find a better vodcast or I will make my own! (TBA)
https://www.youtube.com/watch?v=g_TnqKX5ybY - Connecting 3 vectors - graphical and algebraic methods shown
Thurs, Sep 18: SHORT QUIZ ON 1-D KINETICS TOMORROW
Thurs, Sep 18: SHORT QUIZ ON 1-D KINETICS TOMORROW
Hecht reading: pp 29-37 Sections 2.5, 2.6, 2.7, 2.8 (Vectors)
Hecht reading: pp 29-37 Sections 2.5, 2.6, 2.7, 2.8 (Vectors)
Vodcast: Vectors and Scalars (Mr. Andersen) http://www.bozemanscience.com/scalars-vectors (12:33)
Wed, Sep 17: Vodcast - The Law of Falling Bodies (from The Mechanical Universe) - 29 minutes. Expand your mind and your horizons!!
Wed, Sep 17: Vodcast - The Law of Falling Bodies (from The Mechanical Universe) - 29 minutes. Expand your mind and your horizons!!
Tues, Sep 16: Keep cranking out Knight problems from the weekend or Hecht problems from Monday. Summative assessment on 1-D Kinematics this FRIDAY
Tues, Sep 16: Keep cranking out Knight problems from the weekend or Hecht problems from Monday. Summative assessment on 1-D Kinematics this FRIDAY
Mon, Sep 15: Hecht Section 3.8 Problems p 82 #s 81,82,83,93,94,95,99,103.
Mon, Sep 15: Hecht Section 3.8 Problems p 82 #s 81,82,83,93,94,95,99,103.
Week 3 Textbook can stay home this week.
Week 3 Textbook can stay home this week.
Fri, Sep 12:
Answers to Problems 52-60 will be linked at the bottom of this page. Answers52-60.ods is an Excel-like spreadsheet.
Keep moving ahead.
New lab starting Monday. I will also have your formative assessment ready to return.
Thurs, Sep 11:
Continue working through the problem set. Try to solve 4-5 more problems.
Dr Lewin demo:
Plan on a "practice quiz" tomorrow.
Plan on a "practice quiz" tomorrow.
Wed, Sep 10: Tonight: Problems 51-60 (whatever you did not get done in class today) - the page number at the top is 66.
https://www.youtube.com/watch?v=8ZezvNWgi4M (rocket launch)
Tues, Sept 9: Solve Problem 50 using the help posted below.
First, write your knowns and unknowns (what you need to solve for).
Second, identify the equations that will help you find the unknown(s). You only have to choose among four.
Three, draw a picture of the problem to help you visualize the variables.
Four, plug your knowns into the equation you need.
Five, decide what the answer is telling you. Check it for reasonableness.
Solve: (a) Using the constant-acceleration kinematic equations, v1 = v0 + a0 (t1 − t0 ) = 0 m/s + a0 (16 s − 0 s) = ao (16 s)
y1 = y0 + v0 (t1 − t0 ) + 1 a0 (t1 − t0 )2 = 1 a0 (16 s − 0 s)2 = ao (128 s2 ) 22
y2 = y1 + v1(t2 − t1) + 1 a1(t2 − t1)2 2
⇒5100m=128s2 a0+16sa0(20s−16s)+1(−9.8m/s2)(20s−16s)2⇒a0=27m/s2 2
(b) The rocket’s speed as it passes through a cloud 5100 m above the ground can be determined using the kinematic equation:
v2 = v1 + a1(t2 − t1) = (16 s)a0 + (−9.8 m/s2 )(4 s) = 390 m/s Assess: 400 m/s ≈ 900 mph, which would be the final speed of a rocket that has been accelerating for 20 s at a rate of
approximately 20 m/s2 or 66 ft/s2. 2.
Mon, Sept 8:
Let's start using equations. Introduction to vectors
http://www.bozemanscience.com/speed-velocity-acceleration (14:37)
Problem sheet #28-38 never mind - you'll get a good set for tomorrow night.
Week 2 - Textbook can stay home this week.
Week 2 - Textbook can stay home this week.
Fri, Sept 5: Mr. Andersen puts it in a broader context for AP Physicists
http://www.bozemanscience.com/ap-phys-038-motion (8:46)
and homework packet
Thurs In class: (Graphing) Two worksheets: "What Do They Mean?" "What's Goin' On?"Thurs, Sept 4: Mr. Andersen – The Moving Man app – adds acceleration and uses tangent line (Graphing) http://www.bozemanscience.com/position-vs-time-graph-part-2 (13:01)
Thurs In class: (Graphing) Two worksheets: "What Do They Mean?" "What's Goin' On?"Thurs, Sept 4: Mr. Andersen – The Moving Man app – adds acceleration and uses tangent line (Graphing) http://www.bozemanscience.com/position-vs-time-graph-part-2 (13:01)
(Equations) Read Hecht Chapter 2 sections 2.1, 2.2, 2.3
Wed, Sept 3: Mr. Andersen – The Moving Man app – position vs. time – constant velocity (Graphing) http://www.bozemanscience.com/position-vs-time-graph-part-1 (12:19)
(Graphing) Study PhyzGuide handout
Tues, Sept 2: Introduction to distance, displacement, speed, velocity, acceleration (Equations) http://aplusphysics.com/courses/honors/videos/Define_Motion_Hon/Define_Motion_Hon.html (10:56)
Week 1
Week 1
Fri, Aug 29:
Fri, Aug 29:
(1) Read textbook (Hecht) pages 6-15 (sections entitled Measurement & The Language of Physics). This should mostly be review for you. Don't worry if you see unfamiliar language.
Your goal is to answer these questions (Yes, in writing would be a good idea):
(a) What are SI units & why are they important to us?
(b) What are the SI units for length, mass, time, electric current, and temperature? (c) What is the difference between mass and weight?
(d) What is meant by "significant figures"?
(e) Why are they important to us?
(f) What are the rules for determining significant figures for a measurement?
(g) What are two common, complimentary ways to represent physical quantities and relationships? (Hint: sections 1.7 &1.8)
(h) What is the usefulness of an approximation?
(2) Practice using exponents & geometry of triangles
Directions:
(a) Go to the bottom of this page and download the file called default.html. (Exponents) When you open it up you will see a series of problems, a place to type in your answer & a place to check your answer.
(b) Download the file called default1.html for more exponent questions. When you try all of them, you click to get answers and feedback.
(c) Download the file called default2.html for geometry questions. When you try all of them, you click to get answers and feedback.
Remember that your planner has helpful equations if you don't have a math textbook..or even if you do.
Do as many as you need to feel confident. If you get stuck, email me this weekend or let me know ASAP on Tuesday and I will schedule some tutorial time. It is essential that you master these kinds of problems so let me help you get there!
Thurs, Aug 28: Get the textbook signout sheet signed by a parent or guardian. Bring questions you have about the syllabus, the AP Physics exam, or related matters.
Thurs, Aug 28: Get the textbook signout sheet signed by a parent or guardian. Bring questions you have about the syllabus, the AP Physics exam, or related matters.
Vodcast Home Pages
Vodcast Home Pages
BozemanScience (Mr. Andersen) http://www.bozemanscience.com/physics/
Fizziksguy (Dan Fullerton) http://aplusphysics.com/courses/regents/videos/vid_index.html
Minutephysics* http://www.youtube.com/user/minutephysics
MIT Physics 8.01 (Dr. Lewin) http://ocw.mit.edu/courses/physics/8-01-physics-i-classical-mechanics-fall-1999/video-lectures/
*WARNING! Watching MinutePhysics is highly addictive! You are in danger of actually learning physics if you get hooked.
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