Magic Mountain Field Trip is Wed., May 31, 2017. That is a B day. Cost and Permission slip details coming soon. (The buses have been ordered as of 1:45 PM on May 9.)

These old Multiple Choice Exams are useful, but you'll encounter questions that are no longer part of your class's AP Exam topic list. But use them, do as much as you can on any one test, and use them to spark concept questions in your topic inventory. It works as great topic review, no matter how much you do. I'm available to answer questions on them either in review sessions or during the school day.

 

Unfortunately, the 2004 sample test file (attached) doesn't open right for most students, but for a few it does, so I included it. What happens is that the diagrams appear as black boxes.

 

Review Session, Sunday April 30, 11 AM for AP Physics 1 but come anytime.

Review Session, Sunday April 30, 3 PM for AP Physics 2 but come anytime.

 

You don't have to do every single practice test I've been pointing to in the last couple weeks. It's quality over quantity. Bring conceptual questions based on anything good you've tried.

Review Sessions!

 

AP Physics 1: Sunday April 30, 11 AM but come anytime.

 

AP Physics 2: Sunday April 30, 3 PM but come anytime.

Some Quantum Physics Resources - A "modern physics" question like the sample quiz here doesn't seem too unreasonable for the final.

More Practice Exam Here:

 

Do Problems 5 through 7 as if they were an exam. Give yourself one hour. It's late start tomorrow. Do it then. Come to my room at 7:55 if you want to use it at 8.

 

Score it after. Class now should be structured by your questions on these things.

 

Mock Test, measure, review topics, get rid of weakness, Mock test again

Due Monday: That you arrive wanting to go over specific AP Exam Review Problems that you have tried!

Let's do a quality handful every day. Let's do it whether I prompt the problems or not. I showed you how to get to the problem sites. You should already be using the site for mock testing.

 

But here's more good stuff WITH my prompting: Do This 2002 Mock Free Response Test as if it were a real test. ONLY do problems 3 through 7. Write the solutions on BLANK SOLVING PAPER with good notation as if someone were grading it with a rubric. Give yourself exactly 60 minutes on it.

 

Then rubric-grade how you did using the Scoring Guidelines.

Then be ready to ask me concept review questions based on this, and be prepared to do so as way of getting things started whether it is Period 1 or during some afternoon or weekend review session. I'll be on campus to do such things as much as you desire. Just dig in and solve and use such efforts to add to your list of outline topics you want me to review.

You'll see some Mock AP Physics Multiple Choice Tests appearing online. I'll start answering questions on them Monday May 24.

 

Let's agree I'll answer 1998 questions first.

 

If my 2004 file is not degraded, that can come second. Otherwise, 1993 can come second.

 

I'm gonna be steadily adding to the Edlio site all week. I have some Free Response Training ideas.

 

As I've said over and over, USE THIS SITE:

 

A Practice Problem to follow up from DC Part 4 Notes:

 

Even though this involves an attached spreadsheet, this is NOT the Spreadsheet Challenge. This is a quality practice problem. And it leads to an example of a spreadsheet that will let you check your work. This example spreadsheet will be referred to in the posting called Spreadsheet Challenge.

 

BEFORE opening this, do the following practice problem: Draw a circuit that has 4100 ohms in parallel with 39,000 ohms. Put that parallel combination in series with an 8200 ohm resistor. Have current run to the network just described through the use of a 1.19 Volt power supply. USE the DC Part 4 notes method to solve for: the current through each resistor, and the voltage across each resistor. This is excellent practice to confirm one's understanding of the Part 4 notes. After you have solved that on your own, you may open this spreadsheet for the answer. The givens of this problem were the lab data of certain students in 2017, and they have asked me to correct their measurements. This is the spreadsheet I am using to correct them. Do as I have said here, and take advantage of this as a practice problem before opening the spreadsheet. Then open the spreadsheet to check your solutions.

DC Part 1 Notes

DC Part 2 Notes

DC Part 3 Notes

DC Part 4 Notes - This is the heart of the skillset of the Circuit Unit. The prior 3 attachments should take about 5 minutes each. This is the one that requires concentration.

 

If you find this way too easy, then you should do the follow-up practice to it that is posted or the Spreadsheet Challenge.

Spreadsheet Challenge:

 

Attached you will find the fun PhET Simulated Circuit Assignment that you did in Physics 1. Pretend I were assigning that now and open it. You'll see instructions for what to measure in the assignment and a circuit diagram.

 

Additionally, see the spreadsheet that is attached whose title implies that it's used to correct the entire class's simulated circuit results.

 

Notice that in the spreadsheet the columns for all currents and powers have been left blank. These are the places for you to program the key that will correct every students' results. Figure out the symbolic nature of the solution for each current and power, program it into the columns for the name in the top row and then drag the formulas down to the rest of the students. If you can do this, you need no review of Circuits I.

 

To see a different example of something similar to this, see the other spreadsheet I posted that's used for you to check your work on a practice problem. This is under the class posting entitled, "A Practice Problem to follow up from DC Part 4 Notes"

HW due Friday, Two Options:

 

You may do traditional problem-solving by doing written solutions of everything I've posted that involves solving practice problems and is dated Due April 14

 

or

 

You may arrive Friday showing evidence that you know how to program a spreadsheet in accordance with my posting called "Spreadsheet Challenge." Don't engage in the time-wasting of enlisting a friend to program the spreadsheet for you and then you just arrive with the formula or algorithm that the friend told you. I won't be registering this for credit in such a superficial way. Your job is to show me you understand how to derive the formulas yourself. I know how to facilitate that.

 

Did you check the board for the answers to the capacitor problem I told you to do and check during class on April 12? The answers were 0.31666 A and 0.54 C.

These are the answer to the multiple choice section of your most recent test:

 

1. B

2. B

3. B

4. B

5. B and C

6. D

7. D

8. C

9. C

10. B

Your midterm on March 24 will cover all things light, geometric optics (Chapters 22 and 23) and wave optics (Chapter 24). It also moves into quantum physics - the idea of why light from a hydrogen source creates discrete emission lines after being diffracted.

The initial quizzing on Chapters 22 and 23 was supposed to be 100% scores, because it only contained things repeated from the non-AP class called Physics 1: Students were assigned the task of knowing cold the following: which conditions lead to particular image properties. There were roughly four facts to memorize, and I gave an entire class day for questions. Also, a student was assigned the task of knowing which rays to draw in ray tracing. All that had to be done was practice by looking in the book, and again, an entire class day was offered for questions on that after I assigned it. There was nothing AP level in those tasks, and significant adjustment would have to be made by those who did not earn 100% when I checked up on it with a quiz. The midterm will not be such a gift of free points.

 

Wave Optics, Chapter 24, needs to be read immediately. The concepts behind Interference and Diffraction are required, and have already been worked on in class. Read the entire chapter. This space will contain more practice and enrichment items as they come up.

To help you complete your mastery of light well prior to the midterm, this is a 15-page document of textbook content and two practice tests with answers.

Assignment: Wed March 8, you show Optics Knowledge for a grade as follows. I give you image characteristics described in words, and you pick the paper that shows the type of lens or mirror situation for which the assigned condition is possible; then you ray trace it. For example, if I assign you: "Place an object so the image will be real and smaller than the real object," and then you come and grab the template for ray tracing for convex lenses where f<p<2f, that would mean you grabbed the inappropriate template and a B is the highest grade possible.

 

I've already given all the practice necessary to do this, but I haven't specifically checked up on whether people finished that or not. Maybe I'll post more, but it shouldn't be necessary. Reminder: offering was made during the class of Monday May 6 for anyone to come with questions on Geometric Optics skills. Ray tracing would be one of those skills. I'm checking ray tracing on March 8 as described above.

 

The Alpha and Beta Particle Handout: different topic. The attachment is a handout restating what I said in class about this. If you don't bring up this handout, I'll assume you mastered this handout and did all the algebra that proves its answer.

Practice Tests in Geometric Optics

Answers to Practice Tests in Optics

Study Guide! Chapters 22 and 23

There is a test announcement here.

Nothing is due. This is practice to be learned ASAP. I said in class to master the pages of Chapter 20 through Page 675. To accompany that, any odd problem from 1 through 29 in Chapter 20 is relevant. I am posting practice papers and other solutions as well.

Chapter 20 Practice Document 1

Chapter 20 Practice Document 1 Key

Chapter 20 Practice Document 2

Chapter 20 Practice Document 3

Chapter 20 Practice Document 3 Key

Chapter 20 Practice Document 4

Advanced Study Tool - Magnetism. Looking ahead, if things are going well in Chapter 19, you'll want to start using the College Board to measure yourself. To help with that, I have a document here with answers, just the answers, to the College Board's Magnetism specific problems from the years 1999 through 2004. You should see this posting as valuable to you for two reasons:

 

1) By posting it, I've signaled to you which problems of those years contain magnetism practice questions. This saves you much searching time.

 

2) This has answers, no solutions. Sometimes it's bad to have solutions in front of you when all you want is the final answers to measure yourself. Answers without solutions on a document are a bit hard to come by. So enjoy.

Final Exam Topic Information - also includes some things you need to know by January 4. (Not major break study; just some Chapter 19 knowledge.)

Chapter 19 Topics - This study guide tells you what the big topics are for knowing about magnetic fields. I'd like you to have specific knowledge of magnetic fields and their relation to current as outlined in this study guide, and I'd like you to have that knowledge by Jan. 4.

 

I have posted Comprehension Check Tools, AKA Practice Quizzes specific to Chapter 19. Study the Chapter first, then space out these Comprehension Checks over time to see how you are doing. There are at least Comprehension Check documents, so you CAN'T DO ALL OF THEM THE NIGHT OF JAN. 3. Space it out ahead of time, so you're doing no more than two a day.

 

On this study guide posted here, those Comprehension Check Tools aren't referenced, but the listing of topics on this study guide is very important, so you know what's of high priority. On the Study Guide, I call things Topic 1 and Topic 2. Topic 1 has one right hand rule, and it solves for Force. Topic 2 has two right hand rules, and they solve for Field. I made a big deal about this in class on December 16. Knowing the fundamental difference between Topics 1 and 2 is essential.

Answers to Some of the Even Problems in Chapter 19

Chapter 19 Comprehension Check 1 - This has answers at the end.

Chapter 19 Comprehension Check 2 - This one needs to be tried before other Chapter 19 postings with higher numbers.

 

Note: in this document, the unit "u" refers to the mass of one proton. You can easily look up how many kilograms that is. And as you know, the unit e refers to the charge of one proton. You can look up that too, but with that, you know its value was discovered by the Millikan Oil Drop.

Chapter 19 Comprehension Check 3

Chapter 19 Comprehension Check 3 - Key

Chapter 19 Comprehension Check 4

Chapter 19 Comprehension Check 4 - key

Chapter 19 Comprehension Check 5 - This needs to be tried after you have already tried 3.

Chapter 19 Comprehension Check 5 - key

Chapter 19 Comprehension Check 6 - This is based on lab equipment you've all played with.

I said I'd post here, and that your homework is to advance your knowledge of how E field is calculated from point charges and how E field is related to potential in a given space. This posted document is practice in that endeavor. I hope to post here again before 6:30 PM. Keys and stuff to help you make sure you're doing things right.

Only read the blurb below AFTER you have made an attempt at what I put in Intro to Field Theory Notes Part 3. There were two things to solve there. Do them both, and only THEN read the answer discussion below.

 

Some Answer Help with Field Models Part 3: Using the methods of Chapter 15, I hope you got the E field at the point I assigned (let's call it point P) as a vector in Rectangular Form. I hope those rectangular components were 27 N/C leftward and 45 N/C downward. From there I hope you converted that E field answer to Polar Form. I hope the polar form magnitude was 52.47 N/C. I hope the angle you got was reasonable for the direction of the E field at point P. I don't want to tell you that angle. I would prefer if you check your angle by looking at the way the green contours run at Point P in the equipotential diagram on the document. Follow this direction: on the equipotential diagram, draw a tiny segment that is perpendicular to the green contours and runs right through point P. Let the length of this tiny segment be defined as the distance between the two nearest contours in the picture that surround Point P. You should be using the length of this tiny segment to do what I assigned in Question 2 of the notes. You can estimate the length of this tiny segment by looking at the picture carefully and noting its scale with the tape measure that I put on the screen. I'm expecting that you'll come to class with a good awareness of how we now can know the delta-V that separates one contour from its neighbor in this diagram.

For a given value of delta-V-between-contours, why are there infinite possible answers to #2? Because all potentials and potential energies are defined according to a reference level. The reference level can be wherever we choose. None of the values of potentials on the contours are significant. The difference in potential from one to the next means everything. Make sure you have that difference correct and in a way that matches the relationship between E, voltage, and distance.

And now complete your clear, fully-aware reading of Chapter 5, and part of Chapter 16. Which part of 16? In Chapter 16, the reading that is on-topic with everything I've said in these Field Theory notes is the Chapter 16 portion that comes before capacitance. If you reach capacitance, you've gone too far. Get smart now.

So this is Chapters 15 and 16, Part 2. Thing I said is the next HW. It's fast, but if you're not careful, there is a way to misinterpret distance, voltage, and field, so give it thought. I'm going to try to keep posting here the other things that advance the topics. Other postings would be for working ahead or for giving some hints on this one.

 

This brief activity follows exactly from what was done in class on Thursday 12/8.

HW Paper Due Thursday Dec. 6 - You'll need Chapters 15 and 16 of the text.

 

I'll likely put some more things here that would be the extra 22 pieces of flare. The document posted is 15 pieces of flare. 15 is the minimum that you have to do. But if you want to show your enthusiasm, 37 pieces of flare worth, I'll try to put some more useful stuff here related to E field and voltage. But it won't be ready until Wed afternoon. (In case you're not getting my reference, I'm must talking about some extra stuff that would enrich the topic and help you work ahead.)

We'll have a Thermodynamics test on Wed, Nov. 30. Chapter 12 is the main focus, with gas laws as well.

You should practice with any odd problem from Chapter 12, and keep watching this space for more practice guidance.

A Basic Sample Test that I wrote for Chapter 12

Short Chapter 12 Review Notes - Not sure if these use your time well. You decide.

Chapter 12 Review: Textbook Practice

Key to the Chapter 12 Sample Test I already provided

Thermo Test Info and finishing up Thermo Unit coming here now like I said it would. You'll be seeing three word documents posted: Suggested Chapter 12 Problems, A Basic Chapter 12 Sample Test, Old Review Notes from Early Ch. 12

 

So what's a non-Basic Chapter 12 Test? Using any given year's College Board sample problem in Thermo Free Response, taking it as a test, and then using the scoring rubric to grade your performance. That's how you measure your test-taking for real. I showed you how to use the site to what I just described at this link:

 

 

You should be going to that site and sitting to test yourself 15 minutes at a time with any thermo problem from a given year. Then you grade yourself.

Write several meaningful sentences in a paragraph about what energy behaviors stand out in the graph you see of Mechanical Energy versus time in this attachment. The situation was a basketball bouncing and hitting the ground repeatedly.