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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: 1375535657225.png]
Why did Russian women evolve to have huge as fuck tits? Likewise, why east asian woman cannot into jugs?

Perfect Cuboid Problem

8 more posts in this thread. [Missing image file: Brick_1000.gif]
Hey there, everyone. I know that the general consensus is that there is no integer solutions to the perfect cuboid problem. But I believe I've stumbled onto one over some work I've been doing on it for the last year or so. I will be consulting a math professor who is a friend of mine soon, but I'm curious. What does /sci think about this problem? Do you believe that there is a solution or not, and why?
2 more posts in this thread. [Missing image file: Limitless.jpg]
So /sci/, do you think anything like the 'NZT' drug from the movie limitless is possible?
22 more posts in this thread. [Missing image file: TYpLJpOh.jpg]
AMERICA WHAT ARE YOU DOING >inb4 those are fake lel no they're not http://www.snopes.com/photos/signs/sciencetest.asp http://www.patheos.com/blogs/friendlyatheist/2013/04/30/blue-ridge-christian-academy-the-school-that-gave-fourth-graders-the-creationism-test-heard-around-the-internet/ AMERICA PLS STAHP
35 more posts in this thread. [Missing image file: 1360182578842.jpg]
I guess this is /sci/ related. I'm assuming most of you are in some kind of education. What personally motivates you to study? The thought of the career ahead? The thought of beating your peers? Making your parents proud? To impress some qt in your class? What?
9 more posts in this thread. [Missing image file: file.png]
Why do Eskimos have so few body hair and scantly beards if they live in much colder areas than Europeans? Doesn't this goes against the traditional concept of evolution?
3 more posts in this thread. [Missing image file: pythagoras.jpg]
https://www.youtube.com/watch?v=Hl-RQBkjP48&feature=youtube_gdata_player When I was younger this scared the shit out of me. Now that I am a bit more rational I revisited it to see how stupid i was back in the day. I must still be stupid because I can't find possible explanations for this other than "it's fake" which is probably the correct answer. Anyway, say this wasn't fake, what are some explanations you can think up?
14 more posts in this thread. [Missing image file: GREMath_Stuck.png]
Whats your answer and why? Got GRE tomorrow and I feel retarded. I don't know how to solve or understand their explanation. Can someone walk me through their thought process pls? Also, I'm not STEM major so my math is bad.
7 more posts in this thread. [Missing image file: Vancomycin.gif]
Hey /sci/, I have a quick question. I'm a chemistry major going into my senior year, and I was planning on taking a differential equations course as I know it is quite a useful subject for chemical kinetics and physical systems. However, my college (as well as the ACS certified chemistry degree) only require up to calc 3 (multi-variate calculus) for the chemistry major, which I finished before I even started college, so I haven't taken a formal math class (plenty of physics and chemistry though) for four years. What calculus/ any math at all should I review to prepare for differential equations?
31 more posts in this thread. [Missing image file: superdotado_jacob_barnett@20130524214705.jpg]
What to make something of you life, /sci/? Then I recommend giving this a watch: http://www.youtube.com/watch?v=Uq-FOOQ1TpE It's a video by a child genius who is going to disprove the Big Bang. Not even 18 and he is publishing groundbreaking material.

Momentum and Energy

18 more posts in this thread. [Missing image file: Névtelen.png]
I have a question. There are 2 masses one with v speed, the other with 0 speed. The first start pushing the other untill they are at the same speed. The momentum must be the same before and after. Before m*v After 2*m*v/2 But the Energy of the system has to be the same too Before: 1/2*m*v^2 After: 1/2*2*m*(v/2)^2=1/4*m*v^2 if the new speed is v/2 and that is not equal. What is wrong here?

FLUORINE

5 more posts in this thread. [Missing image file: imgr43es.jpg]
Let's talk about Fluorine. Fluorine is the most reactive and most electronegative of all the elements. SO BOW DOWN This shit doesn't exist in nature in it's elemental form because it's so reactive but it will FUCK YOUR SHIT HARD if you attempt to RELEASE THE BEAST. Don't ask me, though, just ask all those stupid scientists that died trying. Hydrofluoric Acid; put it in glass Pyrex it's like FUCK THAT SHIT and eats right through it. Iron? No problem. Lead? Fuck you. Fluoroantimonic Acid; strongest acid know to man. You even think about touching this shit your whole family dies and your stupid cats. ALIEN BLOOD EAT YOUR HEART OUT. You can only store it in a Teflon container, which reminds me.. Polytetrafluoroethylene, aka Teflon; one of the most corrosive resistant and stable compounds known to man. Suzy homemakers reading this better check their panties. You can't fuck with this shit OH, I FORGOT, unless you have... PERFLUORODECALINE; this shit DISSOLVES teflon. LOLZ, YOU NEED FLUORINE TO BEAT FLUORINE. Bitches. Oh, and you can dissolve a shitload of oxygen in this and BREATHE LIQUID. Well, at least until you don't die from carbon dioxide build-up. But FUCK YOU only pussies die. Uranium Hexafluoride; you need this to isolate U-235 from naturally occurring Uranium to make an atomic bomb. Yep, that's right bitches, without fluorine all those stupid gooks would still be alive. HA HA! LOL, FLUORINE FUCKS YOUR SHIT NIGGERS AND YOU KNOW IT
20 more posts in this thread. [Missing image file: discovery1.jpg]
Found this in ontario... Can anybody name anything off this coin to the right? Names of people?

Basic math

26 more posts in this thread. [Missing image file: Dat+ass+_8d4f5bb91ddc48b1789a4be532(...).jpg]
Hey /sci/ I forgot how to math... Simple question, I'm going to feel like an idiot once it's answered I know. How would one equate; (10^9-x -2)^2 Thanks for your help
1 more posts in this thread. [Missing image file: north-korean-tractor-simulator.jpg]
How many minutes does it usually take to reach LEO? I'm trying to figure out if DPRK has the ability to launch a satellite into orbit. I know there latest missile has a combined (3 stages) burn time of 4,5 minutes and is capable of atleast reaching 10.000 kilomters. Now I want to deterine if it goes fast enough in those 4,5 minutes to reach the magical speed of 27,500 kilometers per hour.
36 more posts in this thread. [Missing image file: 1003906_517265445010156_1500766027_n.jpg]
what do you think? show your work, or reasoning.
0 more posts in this thread. [Missing image file: calculus.jpg]
So I have one more exam to finish and I really like finding online notes from various US unis, but I can't seem to find classes that cover the following material closely (electrical engineering). In what subject is the following covered (engineering level not physics/math level) Integral transformations (Fourier transform, Laplace transform). Special functions (Gamma function, Beta function, Bessel function). Partial differential equations (wave equation, the equation of heat conduction, Laplace equation). Variational calculus (Euler equation).
14 more posts in this thread. [Missing image file: 8-6-2013 4-15-31 PM.png]
Looking for some help with these problems, I have no clue where to start. Help please! a) 3 + 6 + 9 + 12 + 15 + 18 + …. + 303 b) 6 + 7 + 8 + 9 + 10 + 11 + …. + 102
2 more posts in this thread. [Missing image file: Screen Shot 2013-08-07 at 12.12.22 PM.png]
Okay so my online math class is beyond retarded when it come to entering in answers Firs it was the graphs that would lets me enter in decimals only whole numbers. So I could never input the right answer... Now these fucker are rounding every answer I've gone through 8 of these and I have no idea how they are doing the rounding? They seem to be different everytime Pic related tell me what you get? Because I cannot for the life of me get any of these right
7 more posts in this thread. [Missing image file: diamond.gif]
The five members of the sanford family picked a total of 8 1/3 cartons of blueberries. Which expression would allow the berries to be distributed evenly among each family member. (1) 25/3 x 1/5 (2) 3/25 divided by 1/5 (3) 5 divided by 25/3 (4) 5 1/3 x 5/1 (5) 8 1/3 x 5/1 I dont need the answer , I just dont understand what I have to do to figure out the answer. Help please, I think the answer would be choice 3 because you would have to distribute the blue berries amongst 5 people so I would assume you would have to divide, am I correct? If not how do I go upon figuring out the correct answer? Thanks in advance for your time.






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