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/sci/ Science & Math

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Most viewed threads in this category

12 more posts in this thread. [Missing image file: ttw.jpg]
the best episode of through the wormhole in your opinion ?
0 more posts in this thread. [Missing image file: BOOK.jpg]
Anyone have a solution manual for Advanced Mechanics of Materials and Applied Elasticity, 5th Edition Ansel C. Ugural Saul K. Fenster? Desperate for HW in the class.
6 more posts in this thread. [Missing image file: coppin a feel.gif]
What unit is malleability measured in?
10 more posts in this thread. [Missing image file: 1295209194523.jpg]
What does it mean when someone says the acceleration is .5g? inb4 retard. Just answer the question please and I'll be on my way
5 more posts in this thread. [Missing image file: 1335469973446.jpg]
Horrible programming student here. I have to make an 8x8 checkerboard using python & this graphics module a professor made. As of right now this is what I have from cs1graphics import * paper = Canvas(400,400) blackSquare = Square(50, Point(75,25)) blackSquare.setFillColor('black') paper.add(blackSquare) I know I need to use the modulus operator (%) within a loop to make it so that it inserts a black square in every even square, but I can't think of how to do this shit to save my life right now. After I put down the squares in a loop I have to actually put checkers on the image, but I think after I actually understand how to loop in the black squares I'll understand how to do that. Help?
14 more posts in this thread. [Missing image file: hshs.png]
Damn't man. I have a physics test tomorrow and I got behind studying other stuff. I can't figure this simple problem out and can't find an explanation anywhere that makes any sense. Can one of you hep? If Vector B is added to Vector C = 3.0i + 4.0j, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of Vector C. What is the magnitude of Vector B? I know how to get the magnitude with the C vectors I just can't figure the whole picture out. If anyone could just explain what the problem is saying I might be able to get it.
5 more posts in this thread. [Missing image file: fin_1_wf.gif]
I'm having problems with this. Image is related. I've worked out the following: Boundaries: + and - 400 picometers Wavelength: 1950 picometers. With this information, how can I answer the following questions? 1) What is the approximate kinetic energy of the electron inside the well? Kinetic energy = _____eV. 2) Now consider an infinite square well potential of the same width L. When the electron is in the ground state of this infinite well, is its kinetic energy higher or lower than its kinetic energy in the ground state of the finite well? Is it higher or lower? 3) If the electron were in the ground state of an infinite square well of the same width L, what would be its kinetic energy? Its kinetic energy = _____eV. I would really appreciate if anyone can help or provide insight into this.
9 more posts in this thread. [Missing image file: 1348312980994.jpg]
How do you write equations on /sci/?
15 more posts in this thread. [Missing image file: physics.png]
How many revolutions does the object make during the first 4s? [please explain how you got your answer]
36 more posts in this thread. [Missing image file: Screenshot - 100112 - 15:54:37.png]
Could science explain my raging foot fetish?

I need Trig Tutoring

27 more posts in this thread. [Missing image file: ]
Hi, retard anon here, I need help with tutoring in trigonometry, and I know better than to ask any other board due to no one else being nearly as proficient in mathematics or science. So, I come here asking for assistance, I seriously need help in trig, can anyone provide? I'll email you legitimately. In return for responses, sexy ass.
10 more posts in this thread. [Missing image file: 488310_405259599539218_552861786_n.jpg]
Give me a good documentary about space that's not full of bullshit. How the Universe works, The Universe, and especially Through the Wormhole are just full of it. I need something serious, without the layman terms and non stop action music. Also, without the stupid comparisons.. Like in the first episode of through the wormhole when they compare the universe to chocolate. That really gave me cancer.
3 more posts in this thread. [Missing image file: basis.gif]
What kind of simplification is used here? I can't get my head around it. Would /sci/ be kind enough to help?
19 more posts in this thread. [Missing image file: I03-02-darkflow.jpg]
http://en.wikipedia.org/wiki/Dark_flow For people who think that everything that exists came into existence with the Big Bang, explain this.
15 more posts in this thread. [Missing image file: 1343534447139.jpg]
What's the most advanced mathematics with non-academic and mature (non experimental) applications? Industrial/private sector applications
11 more posts in this thread. [Missing image file: 1296910879314.jpg]
Hi /sci/ I have to prepare a lab assignment about recrystallization and the prof gave us a few questions to answer. I'm not asking you guys to do my homework, but there's one question I just can't get my head around. Please help. (Also, sorry if some of the terms are incorrect, I have to translate this shit.) "Suppose that after a reaction you have a mixture of 500mg product A and 10mg contamination B. Both substances have the ssame solubility in water, 0.5g/l at 0°C and 18g/l at 100°C. Can you separate pure A by doing one recrystallization in water? If yes, how many milligrams of pure A will you have? Give detailed calculations. At first sight I would say that it's not possible, but I think it should be because they ask for detailed calculations. Please help? pic unrelated
2 more posts in this thread. [Missing image file: fas.jpg]
So, i've been thinking, if you could construct a ray gun or some kind of thing that could remove all bonds between (like hydrogen bonds) molecules and inside of molecules (like van der waals or covalent bonds) so that all that would remain would be the basic elements themselves. What would happen if you used it on like a human? Would it just fall apart into a super-dense small pile of "dust"? In that case, how would the color change`? And could you even place the pile on something?, or would it just fall trough all matter, seeing how there are just a bunch of loose atoms?
3 more posts in this thread. [Missing image file: kidschool13.gif]
Hi, /sci/. Would any of you feel like assisting me with something? I have some memory problems, and focus is kind of a problem. I respond better to actual responses given -to- me than books. It's an odd quirk, I know. I'm trying to create a math hierarchy poster for my nephews, nieces and my cousin's kids. Something that, similar to a Darwinian path of evolution, goes from the most basic of mathematics concepts and primes their understanding to be able to acquire and comprehend more involved, sophisticated and complex math. One who barely understands multiplication and division, for example, isn't going to be able to so easily handle prime numbers or fractions. One who can't juggle the definition of a new confusing word with many syllables is not going to be able to attach it to a new math tool or concept and apply it properly. So what I'm trying to do is make a poster featuring all the math, from lowest tier to at LEAST senior year of high school. A tree flowing from the most fundamental and basic elements, with places for both vocabulary concepts and application of the functions they define. Hand in hand, recognizing that throwing symbol-words with many confusing syllables at children at the same time you try to demonstrate how they work is disruptive and obnoxious for some people. If you were to construct a tiered tree from most fundamental to most sophisticated math, to at least an American Grade 12 level, how would you arrange it? Would you put the symbol of pi in the same tier as introduction to decimal places, or later? I'm not a strong mathematician. I'm a family member who would like to lend support to young people. I also apologize about the word soup in this post.
3 more posts in this thread. [Missing image file: tachyon.gif]
Why haven't scientists invented a tachyon gun yet?

Article request

8 more posts in this thread. [Missing image file: Clipboard-1.png]
Anybody want to be a saint and get me this article? Strategies for the Regioselective N-Functionalization of Tetraazacycloalkanes. From Cyclam and Cyclen Towards More Sophisticated Molecules https://www.thieme-connect.com/ejournals/issue/10.1055/s-002-404 My university is shit and I don't have a subscription for this publication.

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