Week of November 16, 2015

Hello again, intrepid physicists! It’s almost Thanksgiving, and interims are this Friday. Keep going strong!
Please note: Email continues to be down as of the writing of this blog (Friday the 13th.) If you need to contact me, please call the school and use my extension, which is 1262.

This Week in AP Physics
We will continue with momentum (ha ha) by completing our impulse-momentum theorem lab, homework, and classwork followed by a possible quiz. Next we’ll cover the law of conservation of momentum and will perform an experiment, do a small homework, and do some classwork followed by a possible quiz. Finally we will cover the role of energy in collisions and will do an additional experiment. I’d love to finish all of this by next Tuesday, but it might take some luck. 🙂

This Week in Physics
Please look at your class period…
1st period: On Monday we will take a quiz on friction. Then we will finish our friction experiment (including making up the lab for all of those who were out on Thursday) and will also finish covering elastic force, followed by assignment 3. On the day after we finish assignment 3 we will take a quiz and will then begin to explore Newton’s Laws of Motion.
3rd period: On Monday we will finish assignment 1 from unit 3 followed by a quiz on Tuesday. On Monday we will also take a podcast quiz over Force Podcast 4 – Introduction to FrictionForce Podcast 5 – Static Friction, and Force Podcast 6 – Kinetic Friction, so be sure to take notes on those. We will then do an experiment on friction for which you will write a lab report on the projectile experiment is due on Wednesday, November 18. We will also do assignment 2 followed by a quiz as announced. Time permitting, if announced, please take notes on Force Podcast 7 – Elastic Force and Force Podcast 8 – Elastic Force Sample Problems. Final note: Your lab report for the projectile experiment is due on Wednesday, November 18. (Remember that the hardcopy will be due at the start of class on the due date; an upload  is due to TurnItIn.com by 3:00 of that day. Remember to write using Google Drive and share your document with me at alhsgb@gmail.com…Note that I do not use that for email correspondence. Be sure to use the lab document as well as the lab report writing guide and lab report rubric as you write.)
6th period: We will do an experiment on friction for which you will write a lab report (due when announced) and will take a quiz over friction, as announced. Also due on the day of the quiz: Notes on Force Podcast 7 – Elastic Force and Force Podcast 8 – Elastic Force Sample Problems. We will go over these and will then do assignment 3 followed by a quiz, as announced.

Cool Science of the Week
It’s tough to see things that are really far away in space unless they glow. Stars and galaxies are fairly easy to spot using space telescopes, but planets are another matter (physics pun!) Astronomers theorize that our solar system extends outward to an giant icy asteroid belt called the Oort cloud, but we’ve never seen anything in the Oort cloud directly. However, this week astronomers in Hawaii announced that they’ve seen a dwarf planet that is the most distant object we’ve yet detected in our solar system. It is 103 times as far away from the sun as Earth is, and it is 3.5 times farther from the sun than Neptune! It is dwarf planet V774104, but the astronomer who discovered it is in the process of deciding on a better name, possibly the name of a deity from Hawaiian culture. What does this have to do with the aforementioned Oort cloud? It is possible that this planet’s orbit takes it into the Oort cloud, making it the first object we have direct evidence of that exists in the asteroid belt that has, up to this point, been theoretical.


The Oort cloud is theorized to be up to 100,000 times the Earth-Sun distance WIDE! Imagine the distance from Earth to the Sun and multiply it by 100,000…That’s how big we think the Oort cloud is! The tiny white dot in the center of the cloud on the image above is our entire inner solar system (as far out as Neptune)!