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Everything posted by willorn

  1. Quite well. I've enjoyed myself and my classes here. The course Modern Physics has just been removed from the curricula and sort of integrated into Quantum Physics I so I'll be taking that next semester. Yeehaw!
  2. [ATTACH=CONFIG]371[/ATTACH] We don't always work in the library. Maybe this thread could be about college and high school seniors could ask questions. I know I had a lot when I was taking AP C.
  3. I'm in it. Professors are awesome. I was reminded of Aplusphysics and a certain professor when I caught up to the Big Bang Theory episodes a few days ago. Honors Physics seems to be starting slow but I hear tales that it will kick my butt. More to follow.
  4. A quick re-work of my work yeilded a much stranger looking answer, but since I could find no fault in my original method, I can only assume my new answer to be the simplest form solution. (Sidenote: the "IK" term towards the end should be positive after it is added to both sides, I got caught up in Latex)
  5. willorn

    Physics in Billiards

    Oh darn, they stopped working again
  6. willorn


    I can already tell this post will have a lot less structure than usual. I've been thinking about special relativity quite a bit more than usual these past few days, in particular, the twins paradox. We didn't discuss it, but it seems to me that the actual aging is not the paradox involved, but the question of which twin aged how much is the paradox, since the earth twin would believe the other twin to be 40 years older and the space twin would think himself only 4 years older. Secondly, we discussed that special relativity applied to objects either in constant motion or at rest. In other w
  7. http://www.brimbankweekly.com.au/news/national/national/general/student-helps-solve-cosmic-mystery/2176857.aspx?storypage=2a http://news.yahoo.com/s/afp/20110527/sc_afp/australiaastrophysicsscience This audacious undergrad made a major discovery while on break! Just goes to show the success teams of scientists can have with a fresh perspective. For a background of the "Missing Matter" Problem, try wikipedia: http://en.wikipedia.org/wiki/Dark_matter#Observational_evidence
  8. If you're interested in Higgs Bosons and hypothetical missing matter, check out my blog/collection of links about the australian undergraduate student who made a groundbreaking discovery in the field of particle physics!
  9. I used the same method as for part I but with Kinetic Energy having both rotational and linear components. I have begun the derivation using some geometric observations made in Part I of the problem. *note: this derivation will be hard to follow without first walking through the solution to Part I of the challenge problem. Finding the changed velocity: (This time around, I figured the kinetic energy at the time the ball leaves the basketball would have both rotational and linear kinetic energy because it is rolling)\ Eventually I changed omega, rotational velocity, into a linear expres
  10. I've heard of this phenomenon before, and I believe that once she begins turning, she robs the earth of some miniscule angular momentum, and when she stops turning, the earth regains this momentum. I wish I had a technical explanation.
  11. After the conclusion of my AP tests, I think I've finally found a nice solution to this problem! I will employ the wonderful Latex to derive my answer! I began with an FBD diagram, just like my momma (Cermak) taught me. [ATTACH=CONFIG]131[/ATTACH] I began by examining my FBD and drawing trigonometric conclusions. (After receiving word from Frach, I realized I neglected to mention the Normal; It is important to note that the Normal would necessarily be zero for the puck to fly off the basketball, and that the normal force is a function of the centripetal force and therefore: [ATTACH=C
  12. Superconductivity was first discovered by Dutchman and physicist Heike Kamerlingh Onnes, when Liquid Mercury was cooled to just 4.2 Kelvins!! (Using some very expensive Liquid Helium) While measuring the resistance of the substance, Onnes found that at this specific temperature, the resistivity of the substance quite literally dropped down to nothing. Zero Ohms. But whats the significance? Firstly, Onnes had discovered a material that would produce no heat when an electrical current flowed through it, which has huge technical implications. It is being discussed, for instance, whet
  13. Flabbergasted is the best word to describe my reaction to this.
  14. The following is a piece of an episode of MacGyver, complete with a FizziksGuy voiceover explaining a fascinating effect of physical stress of ferro materials, called the "Inverse Magnetostrictive Effect" or "Villari Effect." Although understanding this process requires very abstract thought, I highly recommend it for those of you planning to pursue E + M further into the future. It is a fascinating subject! Its important to understand that the process you saw MacGyver use does not necessarily form magnets for all conveniently placed metal rods. MacGyver must have found himself a nearl
  15. There seems to be some problem with a certain user's blog posts and being able to view them via aplusphysics so here is a direct link to DannyBoy132's first Blog! http://www.aplusphysics.com/forums/blog.php?16-Santa-Claus-is-REAL!!! It's really good stuff.
  16. willorn


    Everyone do yourselves a favor and rate this blog like its a five star hotel. It will be easier to find at the end of the year when we've created a million blogs
  17. willorn


    You forgot all about the reduced momentum without the added mass of Woodson and Driver in play. On a more serious note, the friction coefficient between players cleats and the turf can be a big deal if a team isn't well equipped and has actually cost teams many a rushing yard.
  18. willorn


    maybe I'm jumping the gun but what about good 'ol QVC?
  19. NASA is currently developing a telescope to further probe the final frontier, and this new telescope, called the Webb telescope (after NASA's second administrator James Webb) or JWST, is being launched in many ways to replace the Hubble. It is designed to capture and analyze infrared light and has a primary mirror at least two and a half times larger than the original Hubble, and it is hoped that the Webb will be able to see deep into dust clouds and observe the formation of stars, planets and relay pictures of some of the universes' earliest stars. The possibilities presented are enormous, an
  20. willorn

    Midterm AP C

    After doing very well on the multiple choice portion of the physics exam, I walked into the Part II questions a lot less prepared than I thought I would be. What was encouraging, though, was that even with these difficult free responses (difficult for me, personally) I feel that I could answer all of those problems perfectly if they appeared on the AP exam. Although I forgot much of what I would have needed to know on the part II (the problems were familiar but I couldn't quite get them), I'm feeling very confident that if I do what I can, I can get at least a four on the AP C exam
  21. willorn

    SHM in everyday life

    I know what you mean. especially with the word thing.
  22. Wait just a minute, this outward acceleration doesn't have anything to do with the "centrifugal force" does it?
  23. willorn

    Physics Troll

    so then, if you did push the stick, a compression would form and move along down the stick until it finally reached the end and the stick returned to its former length
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