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/sci/ Science & Math

Threads added between 2013/02/27 and 2013/03/06

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Most viewed threads in this category

8 more posts in this thread. [Missing image file: map00190.png]
Hey, /sci/. I've got a Bio 101 short essay question that is killing me and taking up time that I could be using more productively for other schoolwork. If you guys could help me out with this within the next 3-4 hours, I would be extremely grateful. Hell, I wouldn't mind giving $5-13 via PayPal to whoever could first take the time to arrange a good answer (close to 100 words). Here it is: Explain how oxidative phosphorylation is an example of how new properties emerge at each level of the biological hierarchy.
13 more posts in this thread. [Missing image file: Fphoto-44349803D-2RM[1].jpg]
dear /sci/ why the FUCK is my 10 molarity HCl turning fucking yellow? it's clear then i pour it into glassware and it turns yellow. my equipment is fucking clean. what the fuck is going on? is the HCl being oxidized producing chlorine? pic semi related. not that yellow, but fairly yellow.
7 more posts in this thread. [Missing image file: algebraic-graph-theory-c-d-godsil-p(...).jpg]
Anyone have a PDF of Algebraic Graph Theory by Godsil and Royle? I need it to study for the upcoming USAMO.


3 more posts in this thread. [Missing image file: PLEASE.jpg]
I have come to what is called /sci/, the gathering place for all of the most intelligence evolution has produced, the one question that has been thought since the beginning of time and space in the quantum infininum of everything and nothing; I need to know, where do babies come from?
17 more posts in this thread. [Missing image file: albert_einstein-lg1.jpg]
"time is invented to make motion look simple" - Albert Einstein WTF DOES THAT MEAN
22 more posts in this thread. [Missing image file: Blue_Avatar.png]
>took a triple A battery >removed wrapping >on negative terminal there is black part (used to be covered by wrapping) >rub black part with steel wire >sparks (not electrical, like flint and steel) >battery heats up to point that's it uncomfortable to hold what is happening?
3 more posts in this thread. [Missing image file: 150.png]
30 more posts in this thread. [Missing image file: antenn16.gif]
Do antennas actually attract radio waves from long distances or do they not attract them at all and only act on waves in their immediate vicinity?
36 more posts in this thread. [Missing image file: bicarb588432.jpg]
Why the fuck is it called Sodium Bicarbonate? I don't see two carbonates anywhere, Why are the drinks called Soda if they don't have (necessarily) Sodium? And why the fuck did they call it Sodium when Natrium sounds more scientific (e.g. hyponatriemia)?


13 more posts in this thread. [Missing image file: 11.png]
how do i get v


7 more posts in this thread. [Missing image file: help.jpg]
Someone help please. I've been stuck on this problem for an hour now and can't seem to figure out how to do it.


15 more posts in this thread. [Missing image file: Koala.jpg]
Hey /sci/ help me write my bio essay please. Instructions You must use the following equation and relate it to each unit we covered >>Equation: Glucose+oxygen<-------->Carbon dioxide+water Units:What is Biology? Basic chemistry and biochemistry cytology Cellular respiration Please/sci/ im desperate and its due tomorrow!
40 more posts in this thread. [Missing image file: Hover Board.jpg]
How long until I can go hoverboarding?
0 more posts in this thread. [Missing image file: Linear-Algebra-Poole-David-9780538735452.jpg]
does anybody have a pdf of Linear Algebra Modern Introduction 3rd Edition by Poole? I've been looking everywhere and can't find one

hybridization of polyatomic ions

11 more posts in this thread. [Missing image file: sulfite.jpg]
Any chemistry gurus on /sci/? For the life of me I can't understand why the sulfur in the sulfite ion has sp3 hybridized orbitals. The electron domain geometry (trigonal planar) tells me that it should be sp2, but when hybridizing the 3s and 3p orbitals I get three sp2 orbitals and one p orbital. The first sp2 orbital is filled and the other two are half filled. The remaining p orbital is half filled and will form a pi bond with one oxygen atom. From the lewis structure I see that the molecule contains 3 sigma S-O bonds and 1 S-O pi bond, however the hybrid orbitals don't agree with me.
18 more posts in this thread. [Missing image file: 1-the-speed-of-light-michael-tompsett[1].jpg]
Why is the speed of light what it is? Why isn't it 4*10^8 m/s? Or 3*10^1000 m/s? Why does a massless object have a speed limit?

SpaceX copes with glitch after launching Dragon to space station

28 more posts in this thread. [Missing image file: spacex-9.jpg]
Why no discussion? http://cosmiclog.nbcnews.com/_news/2013/03/01/17146712-spacex-copes-with-glitch-after-launching-dragon-to-space-station >The Falcon 9 made a problem-free ascent from its launch pad at Cape Canaveral Air Force Station in Florida at 10:10 a.m. ET. But a half-hour after launch, SpaceX's billionaire founder, Elon Musk, said in a Twitter update that controllers encountered a glitch involving the capsule's thrusters. "Issue with Dragon thruster pods," Musk wrote. "System inhibiting three of four [pods] from initializing. About to command inhibit override." >Each pod contains a grouping of thrusters that are used to guide the Dragon's course in orbit. Initially, SpaceX said it preferred to hold off on opening up the Dragon's power-generating solar arrays until at least two of the four thruster pods were operational. Later, SpaceX spokeswoman Christina Ra said that the solar arrays were deployed after overriding the onboard computer. >In an email, Ra said the Dragon "experienced an issue with a propellant valve" after it achieved orbit. "One thruster pod is running," she said. "We are trying to bring up the remaining three. We did go ahead and get the solar arrays deployed. Once we get at least two pods running, we will begin a series of burns to get to station." I'm currently gunning for a co-op with SpaceX, fwiw
36 more posts in this thread. [Missing image file: Ulam_Spiral_Divisors_100000-2-1.png]
The nth prime number is \sum_{m=1}^{2^n} m \left\lfloor \frac{m \left\lfloor \frac{(m-1)!+1}{m} \right\rfloor}{(m-1)!+1} \right\rfloor \left\lfloor \left(1+\left|n+1-\sum_{k=1}^m \left\lfloor \frac{k \left\lfloor \frac{(k-1)!+1}{k} \right\rfloor}{(k-1)!+1} \right\rfloor \right| \right)^{-1} \right\rfloor Discuss.
6 more posts in this thread. [Missing image file: two_rings.png]
Is the Myo armband product nothing more than a gimmick? https://getmyo.com It is a remote control. We have remote control, and it is cheap and simple. Myo is vastly more complex, less natural, requires grosser movement, and the movements have to be learned. It doesn't relieve the use of the hands -- the hands are part of the movement. It obviously doesn't provide more functions, as remotes can be built with many. Is there anything but novelty to this?
32 more posts in this thread. [Missing image file: 136203729762.jpg]
If every set contains the empty set, does the empty set contain itself?

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