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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 ?
6 more posts in this thread. [Missing image file: coppin a feel.gif]
What unit is malleability measured in?
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.
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]
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?
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

honest question on race from /pol/

74 more posts in this thread. [Missing image file: race & genetics 2.jpg]
>>>/pol/5773012 >Person in Group A is born with a mutation increasing Group A's average intelligence >Group A has no contact with Groups B, C, and D >How is that increase in intelligence passed to groups B, C, and D to keep them equal? >What in nature would require that groups A, B, C, and D be equally intelligent? also, >Whether or not these groups should be classified as groups doesn't change the fact that racial egalitarians argue that the groups are equally intelligent. >It would be like me breaking humans into a glasses and non-glasses group. Even if the groups are contrived, is it likely that both groups will be 100% equal in intelligence and different not even by .00...1%? >Actually, breaking down the major racial classifications makes my questions even tougher to answer. Now, we have not only large broad groups but thousands of small tribes of people that lacked contact with each other. Each of these groups is supposed to be equally intelligent. >So, back to my question. If one person in group A had a genetic mutation that increased his and his tribes intelligence, how was this average increase in intelligence passed to tribes 1,2,3,4,5...343,643,232 etc. so that they would continue to be equal in intelligence? >And, why would this leveling of intelligence even be required by evolution or nature? Thanks! Not a White Nationalist. I like multiculturalism to an extent, but I do find WN arguments on race compelling and I'm trying to understand how racial egalitarianism works with evolution.
4 more posts in this thread. [Missing image file: images.jpg]
A dart, thrown at random, hits a square target. Assuming that any two parts of the target of equal area are equally likely to be hit, find the probability that the point hit is nearer to the center than to any edge. NOTE: This is not a hw problem, just an interesting problem I found online. It's a sample question for the Putnam Exam. Any ideas?
4 more posts in this thread. [Missing image file: origin-photo-u1.jpg]
sci, I'm studying Electronic engineering, I started this year and all i am learning is math... what do you think I can do as a hobby? I mean, friends of mine are studying informatic engineering and they do softwares and staff in their free time... Pic not related
0 more posts in this thread. [Missing image file: hamster.jpg]
how much money would it take for me to make this? keep in mind I only have a highschool education and a small budget
223 more posts in this thread. [Missing image file: 220px-Einstein_1921_portrait2.jpg]
Taking physics questions...if they aren't too fucking retarded
3 more posts in this thread. [Missing image file: fu.jpg]
2sinx - cscx = 1 answers: pi/2, 7pi/2, 11pi/2 when i worked it out i only got pi/2 how do u work this and get the other 2 answers? have a test on this tmrw
1 more posts in this thread. [Missing image file: eternalfeel.jpg]
No one here would happen to have a copy of Graphical Analysis that they could upload somewhere for me, would they? Cause I would appreciate either that or some free but still as good alternative if anyone knows of any.

Subliminal messaging programs

7 more posts in this thread. [Missing image file: subliminal-messages-hypnosis+Sublim(...).png]
What is /sci/'s thoughts on them? Is subliminal messaging an effective form of mental programming or even brainwashing? I can not for the life of me find an UNBIASED study on the issue, so it has me thinking.
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?






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