Hi AP Physics Students:

This is my first communication with you since our last day together on Friday March 13th.

If you have not been following the developments with the College Board regarding the AP Exams, there are some significant changes that will be occurring due to COVID-19.

• The AP Exam in Physics will be a 45 minute, at home, F.R.Q. exam only. 

• The date is yet to be determined.  There will not be any Multiple Choice Part because it was felt that it would be easier to ensure "Academic Integrity" with just an F.R.Q. Exam.

• The F.R.Q. Exam will cover Units 1-7 Only.  These seven units are the units we have already covered up through Rotational Mechanics.

• Units 8-10 on Waves, Electrostatics, and Simple (Electrical) Circuits will not be Tested.

• The Dates and details of the Exam will be shared by College Board soon.

Another Important Addition is that the College Board is providing online "Webinar" type lessons, beginning tomorrow morning at 9:00 am Pacific Standard Time.  The first lesson tomorrow (3-25-20) is on Rotational Mechanics.

Here is a direct link to Youtube video set to be live tomorrow morning at 9:00 a.m.  https://www.youtube.com/playlist?list=PLoGgviqq4847W5Jc1K3o99YHTGLx-L75m

You can also go to this link to see more details:  https://apcentral.collegeboard.org/about-ap/news-changes/coronavirus-update

I hope you will consider watching these online lessons that will help you review the ideas of the concepts I have taught you this past school year.  I will also be watching them to see how they are.

If you have not yet looked at the two practice F.R.Q.'s that I gave you on our last day, it might be wise to put some time into answering these questions.  I think it would also be wise to work out the answers to the two Practice Multiple Choice Tests that you also received.  Even though you will not be taking a Multiple Choice Exam, it will still nonetheless be a good review of the topics.  

You can elect to skip all of the questions that pertain to Units 8-10.  At some point, I will post answers to these two Multiple Choice Exams.

Also, it is very easy to download all of the actual AP Exam F.R.Q. Tests from the previous years along with the worked out solutions.

I will be in touch with you again.

I am thinking about all of you.

I am also hoping that you are all well, including your families.

Sincerely,

Mr. Papadakis.

In Class on Friday March 13, 2020

• Short Lesson on Open and Closed End Tubes with handout

• Return Chapter 11 Exams

• Quick Demonstration of Beat Frequency with Tuning Forks

• Pick up the two AP PHYSICS Practice Exams A and B along with two Practice F.R.Q.

• Nothing will be collected on the day we return from the break.

• We will continue with chapter 12 on Sound for a few more days and then prepare for a chapter 12 Exam.

• At the end of the break, I can post answers to the practice tests or I could give the answers when we return.

NO OFFICIAL HOMEWORK OVER THE BREAK

In addition to the Practice AP Tests, there is a Practice 10 Question Quiz on the my ap classroom site that I opened.  You can answer those questions and see how you do.

• Q.O.B. How Do You Make Sound? and Can Sound Travel in a Vacuum?

• Demonstration of Cell Phone in a Vacuum Jar with Air Pumped Out.

• Some Calculations with Speed of Sound.

• Doppler Effect and Calculating New Frequencies with moving Source of Sound.

Homework:

• Read and fill in the questions on the last two "Notes" Worksheets

• Begin Textbook Assignment 12 A

• Begin Worksheet 12.1

• Turn in Chapter 11 Homework Packet and Labs

• Take Chapter 11 Exam and F.R.Q.

Homework:

• Begin Reading Chapter 12 on Sound: First 3 Sections

• Try to answer the questions on the new handout on Introduction to Sound: The Basics

Lesson on Wednesday (3-4-20)

Chapter 11 Exam/F.R.Q. on Friday

• P.O.B. with Standing Wave Velocity and Frequency and Wavelength

• Lesson on How a Wave Changes when changing to a Different Medium

• Lesson on Standing Wave Patterns for the Fundamental and 1st & 2nd Overtones

• Slinky Lecture Experiment/Demonstration with Collection of Class Data

• Watch parts of Mechanical Universe on Resonance and Tacoma-Narrows Bridge

Homework:

• Complete the Concept Check

• Review your Practice Test

• Review Textbook Problems and Worksheets

• Demonstration of Long and Short Pendulums Making Wave Patterns

• Review and Discuss Answers to Worksheets

• Chapter 11 Quiz (15 Questions)

• Begin New Waves Worksheet

Topics for Friday's Lesson:

• (Section 11-11) Law of Superposition
• (Section 11-11) How is a “Standing Wave” produced?
• (Section 11-5) Does a Car’s “Shock Absorber” Really Absorb the Shocks When Driving Over a Bump?
• (Section 11-6) What is “Resonance” and Natural Frequency and How do these Terms Apply to Buildings or Bridges?
• (Section 11-12) For a Stretched String (like a guitar string), how does the “Fundamental Frequency” Compare to the “2^nd Harmonic”?

Homework:

• Introductory Lesson on Electromagnetic Waves

• Quick Activity Calculating the Wavelength of these Waves

Homework:

• Complete Worksheets

• Prepare for a possible Quiz on Wednesday

• Have your graph and slope determination from the Sample Stretch Data Assignment completed tomorrow by the start of class.

• Textbook Assignment 11 A should be almost complete.