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/sci/ Science & Math

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Most viewed threads in this category

2 more posts in this thread. [Missing image file: 1347253519442.png]
i need to write the net ionic equation for alum + BaCl2 and for alum + KOH. can someone help me with this? its not homework, its practice questions which arent turned in, but i would like to understand how to do this because its important for future tests. can someone help me out? ill delete the thread after.
9 more posts in this thread. [Missing image file: 1345567159908.gif]
(asinx+bcosx)^2 + (bsinx-acosx)^2. How do I simplify this?

What's your Cognifit cognitive score?

35 more posts in this thread. [Missing image file: 1254546103964.jpg]
Cognifit is a website that assess cognitive abilities of tens of thousands of participants from all around the internet, gauges their score against a normalized scale from 0-800, where the global mean is 407, and places them precisely on the global bell curve. When you register, click on the Assessment tab and 'Start Assessment'. It should take around 15 minutes. I wonder what's /sci/'s score as it is clearly the most intelligent board on 4chan. Registration is free and you can just bullshit whatever information you'd like including email (no confirmation required), though it is recommended that you'll give your exact age so that you'll be given a precise comparison of your score to people within your age group. So what's your score /sci/? Mine's 519. http://www.cognifit.com/
3 more posts in this thread. [Missing image file: 1318315832432.gif]
I'm trying to rearrange the rydberg equation to find 1/n2^2 So far I've got 1/n2^2 = (1/n1^2)-(1/(?*R)) but when I try to find the log of 1/n2^2 my answer keeps coming out wrong. halp pl0z?
19 more posts in this thread. [Missing image file: 1349095731587.jpg]
Anyone else hate FOBs?? They are the shittiest part about university. They hang out in annoying cliques, refuse to speak English, and are stubborn as fuck. Nothing is ever their fault, and they are sooo damn rude. They are also the sneakiest motherfuckers. I had an account to a homework site, and when I was checking an Organic problem, the blittle bitch carefully watched what I typed in, and immediately logged in on her own computer. fuck im pissed at them
4 more posts in this thread. [Missing image file: naphthalene-crude-250x250.jpg]
So guys, which among hexane, toluene and naphthalene would make a better fuel? Yes, this question isn't specific as to what the fuel it is, but this is related to combustion and I'm fucking stupid.

Bizarre question.

9 more posts in this thread. [Missing image file: Panzer III.jpg]
It started over an argument from my wargaming group, but now this has really gotten me thinking. Suppose you have a pic related, a Panzer III. It weighs about 25 tons. It has, however, run out of fuel in the middle of the Sahara desert, and can't run under its own power. However, you do have some resources, and you've managed to convince a local tribe of Bedouins to help you drag the thing back to civilization, hauling it with camels yoked to the thing. I mean, a strong man can push a car out of a ditch, but wheels are generally easier to move along than tank treads, and I imagine the soft sandy floor of the Sahara is tough to get traction with. Could 6-8 camels even make the thing budge? If they could, roughly how fast could you haul the thing along? It's not urgent, but I'm not great at physics or math, and it's been bugging me for a bit.
17 more posts in this thread. [Missing image file: 200px-LabVIEW_Logo_Vertical_4c.jpg]
>mfw when Labview. Do people actually use this shit ass program? Fuck graphical programming, it's carebear as shit.
6 more posts in this thread. [Missing image file: man.jpg]
https://www.youtube.com/watch?v=p-A8GvUehq4 Thoughts on this? >attraction to futa/shemale porn is not gay at all

Study tips? Study tips!

15 more posts in this thread. [Missing image file: Screenshot from 2012-09-24 02:11:25.png]
Always have the window opened when studying as excessive amounts of CO2 from inadequate ventilation can cause headaches and drowsiness.
15 more posts in this thread. [Missing image file: diagram.jpg]
Alright, I've been trying to figure this out for too long, help me out /sci/? The supporting cables AB and AC are oriented so that the components of the 360N force along AB and AC are 185N and 200N respectively. Determine the angles a and b.
1 more posts in this thread. [Missing image file: 3c60b9544d2541ebcb8b395cc7f7ddb8.png]
>Newton's law of cooling Is picture related simplified? Or is the cooling of objects unrelated to their mass? I thought 100mL of liquid in my freezer would cool faster that 100L of the same liquid
6 more posts in this thread. [Missing image file: 7700.gif]
Say that in some beautiful alternate Universe USA has a candidate, who is technologically literate and talented by modern standards with a successful Engineering/Science/Computers/Whatever in those lines career and not some Lawfag. He is winning and pretty much set to be the next president. His goals among other things are to tell the nation for all to hear that the Congress and Government in general needs field diversity by which it doesn't solely consist of dumbfuck Lawfags to run the country while being advised by the Experts but rather Experts in their respective positions being advised by Lawyers and Lawyers only being bosses there where law, diplomacy and writing up shit matter. The main deal: He wants to shift the Military budget, a pretty fucking big percentage of it, into Energy. Namely the goal is to set a plan by which Oil dependance is eliminated to the highest degree possible. This renders sucking Saudi cock for Oil obsolete and renders wars in the Middle East obsolete. In fact the savages can continue onto self exterminating over the Oil we don't buy anymore but they still depend upon because we ain't giving them the tech or money anymore. Anybody say accidental population control? So, what could possibly this be? What technology and what CAN be used to substitute our need for Oil?
5 more posts in this thread. [Missing image file: walterslaboratory.jpg]
Why can't Walter White just synthesise methylamine?
1 more posts in this thread. [Missing image file: 1065158073544.gif]
>musician space tourist http://www.washingtonpost.com/blogs/innovations/post/sarah-brightman-says-she-wants-to-be-next-space -tourist/2012/10/10/8893527a-12ee-11e2-ba83-a7a396e6b2a7_blog.html
6 more posts in this thread. [Missing image file: 1337295751936.jpg]
Hey /sci/ I wanted know your opinion on the Schrödinger's cat paradox. If you put something in a box then u cannot determine whether it is indeed alive or dead rite? But what I don't get is if you were the one to put the living thing (a cat for example) inside the box then wouldn't you clearly know I'd the cat waz alive or not?

Ball hitting an angle

0 more posts in this thread. [Missing image file: Vector.resolution.jpg]
/sci/, what effect would the angle of the triangle have on the trajectory of the ball? me and my bro are having an argument about it, would a smaller angle make the y smaller?
0 more posts in this thread. [Missing image file: yahoo math.png]
> you can't solve this within 20 minutes
1 more posts in this thread. [Missing image file: 1341440899243.jpg]
what about the fourier transform takes a function from the time/space domain and puts it in the frequency domain? i understand the math well enough, but i don't see the big picture as to how the fourier series representation is correlated to the original function
2 more posts in this thread. [Missing image file: 1339192940364.png]
Fucking freshman mechanics labs, I have a midterm on Analysis 1 next week and it's going to overlap with our group's scheduled lab hours. Now because my group is a bunch of slackers I'm writing the report on the previous exercise and shit is hitting the fan. GODDAMN






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