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Everything posted by mathgeek15

  1. Oh my gosh I am crying on the inside. I was creating a really awesome blog post that everyone would love and I went to backspace a letter and it returned to the home blog page. I lost everything. So I am going to explain why when you are tired you do stupid things such as not save. According to scientists, during sleep your brain sorts through and stores information, replaces chemicals, and solves problem from the day. When you are tired, it's your body's way of saying, "AAAHHHH me tired." Just like when exercising any other muscle, after a certain amount of time that muscle becomes sore and cramped (headache), in desperate need of a break. However, instead of tightening up and not being able to move that muscle, the brain begins to make poor decisions, make mistakes, and neglect certain details. In addition, many people become more emotional due to lack of sleep, they also become hyper-alert in a negative way: aware of the problems youre facing, but not able to focus on any one topic. An interesting "fact" (i googled it so i could be wrong), but when tired your brain acts in a similar way to when you're tired, slower reaction rate, temperamental, and poor judgement. Another really cool "fact" is that your body/brain sends signals to go to sleep, which requires more energy to fight the urge, which makes you more tired. Long story short, give up and go to bed. Which is what I will do now... maybe. I apologize if i repeated myself or if the facts are false.
  2. As many people know I plan to go to college for civil engineering. Whenever I tell people this, they always ask me what exactly civil engineering is. So, to kill two birds with one stone, I'm going to explain via blog post! So basically, to put it in simplest terms, civil engineering is the physics of structures.... sort of. Civil engineering, like engineering in general, has many many many different sections within it. For example, there's structural, geotechnical, materials, construction, transportation, water resources, sewerage, and so much more. Even environmental engineering is considered a subset of civil engineering, although personally I think they should just give environmental its own group, but that will probably happen in the near future with the increase in demand for alternative energy. I am interested in structural engineering, which includes anything from homes to bridges. As a structural engineer, I would be in charge of a variety of things. The dictionary definition is an engineer who "analyzes, designs, plans, and researches the structural components and systems." So during a project, I would need to work with other engineering professions and architects constantly to create a design and during the construction of the project. Civil engineers use trigonometry a lot because almost all structures involve trusses, but as for physics there are several "units" that can be used. For example: Dynamics: Newton's laws, free body diagrams. The purpose of free body diagrams is actually to find the force on each beam of a truss (not to make our lives miserable) Linear Momentum: Center of mass, this is used a lot for I beams and of beam types. Finally Rotational Momentum: Torque. Torque has everything to do with trusses because you what static equilibrium in all structures. How safe would you feel if the building shook every time there was a gust of wind? I would be very scared. One of the final things a civil engineer could be responsible for is overseeing the construction, especially paying attention to the details when the project is being finalized. When I went on a shadowing day, I visited a site with a civil engineer, who kept talking to his partner about certain details that the construction workers screwed up, which irritated him a lot. Not only did I find that humorous, that moment I knew that civil engineering would be perfect for me.
  3. I am extremely impressed and disturbed....
  4. Ok, I gotta admit, that last blog post stunk like my dog's farts. In fact, other than the physics of faradays cage, they all have been pretty bad. Well, I am going to tell you what the best and the worst have in the blog posts. The best: Humor is a good thing. Physics at times can be rather boring, and if you couple it with some humor, it can be more entertaining for the viewers. Have it on an interesting topic. Let's face it, a bad topic is a bad blog. Connect to the "real world." Dont just talk about school and physics class, but connect it to the outside world. It gives the blogs a sense of meaning. Ad finally, Make it meaningful. I know lots of you are only trying to get these done at the last second, but if you are just randomly posting things hoping to get credit, the post is going to be a dud, except on those rare occasions where it turns out amazing (aka the physics of faraday's cage). The Worst: Dry. There's no spice, no excitement. If you simply have a dry subject, try adding in colors or fun faces. It adds character and draws the eye. No Physics. Yes, the are times where the blog posts are simply people rambling. Come on, weve all done it (the physics of tetris by me, not mrmuffinman). Make something up, find some connection, just put physics in it! ***Warning: lame physics is better than no physics, but still won;t do well Bore-fest. As sad as it is there are certain topics that people dont care about, like my independent study. Not that I blame people.... I think the most important part of making a blog post is to be excited for it!!! Put a little of yourself into the blog posts, just like in English voice is key. Well, I hope I have helped make you all better bloggers!!! Ready, Set, Blog!
  5. I have been waiting to do this blog post for a long time, and I am excited to do this. I dont know about anyone else, but I like to keep track of my highest viewing blog posts and try to get the most as possible. After (semi) extensive research, I am ready to share my findings with you!!!! So, to start off, blog post views increases the same way as the learning curve, slow at first, then increases a a faster rate until the acclereation begins to slow down until it plateaus. However, the difference between the learning curve and the "blog curve" is thatthe blog curve never really plateaus because there are always new people entering the internet and this website, searching for an amusing blog post or specific information. [ATTACH=CONFIG]631[/ATTACH] So, last quarter when I did my blog posts I recorded the number of views I had after two weeks. I have now created different groups to dicuss the success of each blog post. Keep in mind that the numbers I use are from my blog posts only, so that can be different for other people. Here are my "catagories" based off the numbers: High viewers ( a hit): 100+ Middle Range (a good blog): approx. 65-99 Low viewers (Better luck next time): >65 I figured this blog post is boring enough, so check my posts later for advice on creating blog posts. Have fun!
  6. Hey, if you want to see the girl spin both ways look from the left to the right picture, watching each one for a few seconds.The girl will switch directions. It' really cool and weird.
  7. Nice job, though i would like to point out that i did a blog post early this year called the physics of tetris... dont worry yours is way better
  8. Wow. That title is a mouthful. Kinda like the equations in this unit because THERE ARE SOOO MANY. So I am going to help everyone (and myself) and create a list. FM= qv x B --> FM= qvBsinᶿ F= I x B FM= FC --> r= mv/ (qB) Velocity Selector: FM= FE --> v= E/B FB= ʃI (dl x B= μoI/ (2πr) μo= 4π e-7 Maxwell's 2nd Equation: ʃB·dA= 0 σInduced= (1-(1/k)) σFree B-Field due to Current Loop: B= μoI/ (2r) ʃB x dl= μoIpenetrating B= NμoI/ L μ= NIA μ= magnetic moment τ= μ x B τ= torque B= μo(qv x r)/ (4πr2) Huh. Maybe there aren't as many as I thought, they are just more complicated than normal. Guete Gelueck! (well, technically Alles Gute....)
  9. Hey people, i know that it's not a fan favorite but i haven't done a blog post on my independent study. Recently I finished a roof truss called a double cantilever (or a type C truss), a model for the technology room. This specific type of roof truss is used mostly in commercial and industrial buildings. It spans on average 16 meters, or 52.5 feet. That's really all I know, but I'm really proud of my work which I think is very cool. Hope you guys agree!! (Again, sorry about the extreme size of the picture, I still cant figure that out....)
  10. Hey why me for the cookie?
  11. Ok, to be completely honest I came up with this idea thanks to Mr. Fullerton and Goalkeeper0. Anyways, whenever someone talks about Faraday's Cage, I think about that scene in Sorcerer's Apprentice. Not only is it a funny movie, but it's got physics in it. Not to mention Nicholas Cage (hahaha Nicholas Cage, Faraday's Cage, no pun intended). What's not to love? So here's a clip from the movie, which is a great and really cool example of Faraday's Cage. Enjoy the Show!
  12. The last one and the Einstein one are my favorite! Nice job
  13. ok. pg 1 #1. I'm pretty sure its A because its at constant acceleration, NOT constant velocity, so you need to use x= vo+ .5at2, which proves D wrong. And when you think about A, what its really saying is speed is increase 9.8 m/s per sec, aka accelerating 9.8 m/s2 pg 15 #17: yeah youre right i figured that out on the webassign Pg 16 #29: Correction: B. PS: You do realize I can explain this? YCM=[m(.5L) +m(.5L) +m(0)]/ 3m --> (1/3)(2/2L)--> L/3 Pg 20 #14: centripital force is equal to the spring force: F=kx --> F= (100)(.03) --> F=3 I know this is right. Pg 24 #32: That's a tough call. You used L= Iw while I used L= mvr. Both are correct equations I believe, because i use mine all the time and it works. So well need another perspective...
  14. That's pretty cool, any idea how to increase h and v on a hard test?
  15. Who says Batman isn't real!:worked_till_5am:
  16. Does this include the plasma ball that's fun to touch?
  17. That's really cool, and I love the shoe analogy!
  18. Ok, I have been working really hard to finish the AP Physics Review Packet, but I haven't really compared answers with anyone else. So I thought it would be helpful for everyone if I posted my answers. I personally think they are right, but if you have a different answer, SAY SO!!! I would gladly compare notes to find the correct answer, helping everyone out. If I missed any questions, let me know. [TABLE="class: grid, width: 500"] [TR] [TD]Pg 1 1. A 11. B [/TD] [TD]Pg 2 14. A 15. E 2. E 65. C 5. C [/TD] [TD]Pg 3 1. E 3. D 3 (below). C [/TD] [/TR] [TR] [TD]Pg 4 5. C 19. D [/TD] [TD]Pg 5 2. E 26. C 27. C 10. C [/TD] [TD]Pg 6 25. B 7. E 3. D [/TD] [/TR] [TR] [TD]Pg 7 6. E 9. E 5. C [/TD] [TD]Pg 8 19. A 9. D [/TD] [TD]Pg 9 34. B 4. E 7. E [/TD] [/TR] [TR] [TD]Pg 10 34. A 14. C 6. B [/TD] [TD]Pg 11 15. E 17. A 8. B 10. E [/TD] [TD]Pg 12 18. A 32. B 15. E [/TD] [/TR] [TR] [TD]Pg 13 18. D 16. A 18 (Right). B [/TD] [TD]Pg 14 19. C 8. A 13. A 14. A [/TD] [TD]Pg 15 31. E 17. B 12. C 17 (Right). E [/TD] [/TR] [TR] [TD]Pg 16 29. B 31. E [/TD] [TD]Pg 17 6. A 28. D 12. C 13. D [/TD] [TD]Pg 18 20. C 27. A 29. B 30. E [/TD] [/TR] [TR] [TD]Pg 19 23. D 1. D 5. C [/TD] [TD]Pg 20 14. B 15. A 9. D 35. A [/TD] [TD]Pg 21 32. E 33. B 32 (Right). D 35. E [/TD] [/TR] [TR] [TD]Pg 22 30. B 26. D 26 (Bottom). E [/TD] [TD]Pg 23 10. A 11. D 12. B 12 (Top). E 20. D [/TD] [TD]Pg 24 32. A? 22. C 21. C [/TD] [/TR] [TR] [TD]Pg 25 22. D 11. E 20. A 35. B [/TD] [TD]Pg 26 10. E 3. C 30. A 34. C 9. D [/TD] [TD][/TD] [/TR] [/TABLE]
  19. That's really cool. Gothic architecture is my favorite. Did you know that because of the arches strength and stability, they can last longer than any other bridge style? The oldest bridge known on earth is an arch.
  20. Let's cut to the chase: Life is full of decisions, especially as a senior in high school. Over the years I have noticed that many people have a difficult time making decisions, so I have decided that I am going to release my decision-making secret, the reason why I can so easily make decisions: I use math. Making decisions is like momentum (p= mv) , two opposing forces collide, changing the directions of the objects. To make things simple, let's refer to only two balls (aka choices). Each ball has a different mass, which is the equivilancy of importance for you. For example, a math test would probably have a higher mass than going to the movies to see Side Effects (which comes out February 1st ^-^ ). In most cases, the objects/ choices are travelling at different velocities, also known as the personal preference velocity. Using the scenario above, going to see the movie would have a high velocity than studying for that upcoming test. With hat information, there is only one thing left to do: LETS GET READY TO RUMBLE!!! To find which decision is best, assign one choice as a negative and the other as a postive (it doesn't matter who gets one sign). then, using conservation of momentum, figure out which direxction the objects will go after the collision (you need to use a sticky collision). To show how it would work, I am going to plug in numbers for myself: mTest= 5 (for economics) vTest= 7 (since I already have a 88 in the class which is low for me) mMovie= 2 vMovie= -10 mTestvTest + mMoviesvMovies =(mTest + mMovies )v' 5(7) + 2(-10)= (5 +2) v' 35- 20= 7v' 15= 7v' v'= 2.14 Thus, the best choice in this situation would be to stay home and study for the test; so I will have to wait to see Side Effects after I get an A on the test. Well, now you know my secret to successful decisions! (Warning: with three or more decisions this equation does work but instead of putting it into a collsion, simply compare the momentum of each choice (signs will not matter, so they can all be positive). Which ever momentum is highest is the best choice. And yes, I actually do something like this in my head everytime I have a difficult decision to make. What you think I leave it up to feelings? Physics is the answer to everything!)
  21. Dick Grayson was definitely the best robin, but hes a great nightwing.
  22. Unfortunately, this is the last of the Batman Blog Post series. However, I saved my favorite for last: Batgirl. When Barbara Gordon first became Batgirl, it was without the consent of Batman; in fact, he didn't even know about it until he saw her in costume. So, Batgirl had to purchase and create her own costume and weapons, including a jumpline to swing around Gotham like Batman. However, she got the wrong jumpline, and would have died, but Batman cut the rope and Robin saved her. Why would she have died? I think Batman can explain that better than me...
  23. As promised, I looked into how fast the Batmobile would go on a frictionless plane instead of the roads of Gotham. To compare the difference, I used everyone's loving friend, Energy. uk= .8 aB= 60 mph in 2.4 seconds (after some conversions....)= 11.17 m/s mB= 4500 lbs (FYI, I was wrong, a tank weighs 135,000 lbs) F-Ff= mBa mBaB- ukmBg= mBa (4500) (11.17) - .8(4500) (9.8)= 4500a a= 10.376 m/s They may not look like a big difference; well, its not in the short distance. x= 1 mile= 1609.34 m x= .5at2 t2= 2x/a t2= 2(1609.34)/ (10.376) t2= 310.2 t= 17.65 s vs. t2= 2x/a t2= 2(1609.34)/ (11.17) t2= 287.999 t= 16.97 s So, obviously, when it comes to short distances, the friction on the car is almost negligible. However, if Superman decided to play a prank on Batman (his attempt to be funny), he could put the Batmobile in space, where the car can infinitely accelerate without friction, where the Batmobile will become the Batrocket. Let's hope the brakes are working.
  24. Great Idea! Now I can compare my equations list to someone else!
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