Complete data collection and analysis for free fall lab
Homework - type up the Exploration portion of the lab; try to linearize the data (6th pd) and find the min and max gradients (both 5th and 6th pds); the video above helps with the mins and maxes; 6th pd - linearization is explained in this video (watch from 3:00 to 5:50), what she does to charge, you should do to time
Complete the free fall lab
Practice interpreting motion data
Homework - the finished lab is due Thursday the 13th at midnight; submit it using turnitin.com
turn in the lab using turnitin.com (by midnight)
Analyze the motion of a tossed ball using a motion detector and Logger Pro (instructions)
Analyze motion with Algodoo (instructions) -- you can download Algodoo from the school's Software Center or find it free online
Homework - read and take notes on pp. 44-51 in the Oxford book, and read pp. 21-30 in my book (do the included practice problems)
complete data analysis for the Second Law lab
practice drawing free-body diagrams
Homework - read pp. 58-60 in the Oxford book (in preparation for indoor skydiving); read pp. 31-45 in my book
Field trip to iFLY!
discuss what we need to do to fix our lab data; the lab will then be due Sunday at midnight through turnitin.com
discuss the gravitational force and weightlessness
draw and label free-body diagrams
Homework - complete and turn in the lab; finish the hand-drawn handout; do pp. 45-56 in my book (read as needed, solve all problems)
practice drawing free-body diagrams, then working out (quantitatively) the forces upon and acceleration of an object
model a box hanging from two wires; review for the quiz
quiz over free-body diagrams and working out (quantitatively) the forces upon and acceleration of an object
Homework - complete handout; read pp.63-64 in my book
review the homework; discuss Newton's 3rd Law of motion
Homework - read pp. 62-64 in the Oxford book
design a lab to measure the coefficients of friction between two materials; dueSunday Monday night through turnitin.com
define work and energy and discuss their relationship
Homework - complete the "design a lab" activity by Monday night; read section 4-1 and the paragraph around equation 4.3 and section 4.3 in the blue "Conservation of Energy" packet, which was written by Richard Feynman; read 4-4 if you want to
complete two assignments: a data analysis problem from an IB paper and the "Dynamics Problems"
Homework - complete the aforementioned assignments
Homework - finish up the two assignments from 11/6; use your Oxford book, section 1.2, as reference for the IB paper problems
relate work to kinetic energy
calculate work (and change in kinetic energy) from a force-position graph
Homework - review the answer key for the Dynamics Problems; complete the handout on force-position graphs and the stapled packet (minus the last piece of paper)
5th pd: review the data analysis problems from the IB paper (first assigned on 11/6)
discuss (gravitational) potential energy
solve problems involving potential energy, kinetic energy, and work from friction or other sources
Coming Up: A few days after returning from Thanksgiving break, I will assign "the mousetrap car project", in which you will need to design and build a small car powered by a single mousetrap. The project also includes a video recording of you explaining the physics behind the car's operation. Stay tuned! They're pretty fun to build and race! [project details] - video help
Enroll in the trip of a lifetime! Join the IB Senior Trip to Japan in the Summer of 2020. An informational meeting for parents (and students) will be held January 30th at 6 pm in room 1403. RSVP, please.
analyze circular motion (horizontally and vertically); distinguish between centripetal and centrifugal force
Homework - read Unit 6.1 and complete the worksheet on circular motion
IA topics are due; corrections to your pendulum lab are due -- both through turnitin.com
Homework - complete these problems, mostly on refraction; use your textbook and Google as reference (but don't just look up answers) -- #4 and #7 use the concept of critical angle, which you can read about on p. 150
review Snell's law, critical angle and total internal reflection; discuss wave superposition (5th only)
total internal reflection (TIR) in fiber optic cables (video)
Homework - read Unit 9.4 Resolution and complete the packet of IB problems; I encourage you to look over the linked videos and webpages
Note: There will be a mandatory PIT meeting on Wed 3/13, in the cafeteria, to discuss the Group 4 Project. The Project itself will be completed during the day on March 29th. -- Bring back a signed permission slip!
[TOK student field trip]
Homework - you don't have to do anything over Spring Break, but your IA Exploration Final Draft is due March 28th
continue study of standing waves and solve related IB problems
The Physics of Musical Instruments(chapter from How Everything Works: Making Physics out of the Ordinary, by Louis Bloomfield)
Homework - complete the Standing Waves packet; the chapter on music above is an interesting read, if you have the time
turn in your IA Exploration Final Draft through turnitin.com by midnight; over April 9-17, you will have class time to carry out the IA and begin work on the Analysis; the Analysis is due in rough draft form on April 23
And here is an overview of some basic properties of sound: pitch, loudness, & timbre ... and a nice overview of timbre on YouTube
Group 4 Project - field trip to Emma Long Metropolitan Park
Spring Break Spring Break Spring Break Spring Break Spring Break Spring Break Spring Break
The world's first image of a black hole was made public on April 10, 2019.
"In science-speak, the shadow cast by the M87 black hole is around 40 microarcseconds wide when viewed from the Earth. An arcsecond is 1/3600th of a degree. And there are 1 million microarcseconds in an arcsecond. Again: The shadow cast by the black hole is tiny. Compared to the full moon, the shadow cast by the M87 black hole is 46.5 million times smaller. Taking a picture of the shadow cast by a supermassive black hole is like taking a photo of a quarter in Los Angeles all the way from Washington, DC."
homework - I want a final draft of your IA Analysis, and a rough draft of your conclusion (Evaluation), by 5/13
Learn more astrophysics on your own!
We will be meeting at UT on the evening of May 1st, at 8:30, for a star viewing party. Meet outside the RLM Bldg, but if you can't find us, just go inside and head up to the roof. See this website. (And bring a parent along!) NO GO - cancelled by UT
Proxima Centauri is 4 light years away. Ambitious space mission Breakthrough Starshot is developing a way to push spacecraft there at a fifth of the speed of light.
Read about it in this NewScientist article (13 April 2019)!
Click on me!
begin lecture on cosmology
solve IB problems on stellar evolution, the H-R diagram and the mass-luminosity relationship for main-sequence stars
homework - complete problems 1 and 2 in the Astro D2 packet
continue lecture on cosmology and finish Astro D2 packet
article: "Gravitational Waves Could Solve Hubble Constant Conundrum"