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/sci/ Science & Math

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Most viewed threads in this category

17 more posts in this thread. [Missing image file: srb-blades.jpg]
Does exsanguination (bleeding out) hurts? Where is it best to cut, is "down the road" on both arms and the jugular enough? How long does it take to die? Would vasodilators accelerate the process? Would it be any different if you were to drink alcohol or use drugs before doing it? Just asking, need to know.
20 more posts in this thread. [Missing image file: 61wx5q-DaHL._BO2,204,203,200_PIsitb(...).jpg]
Does anyone have a torrent of this book, or maybe an e-version they could upload? I have the international version, but this book is apparently the only international version in the fucking world where they actually swap the questions around. I need the US version so I can compare questions. Book is "Probability and Statistics for Engineers and Scientists (4th Ed.) Anthony Hayter"
21 more posts in this thread. [Missing image file: download_car.png]
where do you guys download math/sci textbooks from? library.nu and genesis are both down/gone :( is there a good torrent tracker just for books?
61 more posts in this thread. [Missing image file: Another_Mr__Uppity_design_by_Percyfan94.jpg]
Which major creates the most arrogant students? >I honestly think it's math. You guys learn one proof and you suddenly act like you know every secret of the universe.
14 more posts in this thread. [Missing image file: Ayn Rand copy.jpg]
Pros and cons of Ayn Rand's Objectivist philosophy?
11 more posts in this thread. [Missing image file: 1334120448692.jpg]
A hollow, conducting sphere with an outer radius of 0.250m and an inner radius of 0.200m has a uniform surface charge density of +6.37×10^-6 . A charge of -0.500x10^-6 C is now introduced into the cavity inside the sphere. a)What is the new charge density on the outside of the sphere? b) Calculate the strength of the electric field just outside the sphere. c) What is the electric flux through a spherical surface just inside the inner surface of the sphere? anyone???
8 more posts in this thread. [Missing image file: dickbuttbb.jpg]
Hey I'm having some trouble with this problem: A racing car moves on a circle of constant radius b. If the speed of the scar varies with time t according to the equation v=ct, where c is a positive constant, show that the angle between the velocity vector and the acceleration vector is 45 degrees at time t=sqrt(b/c). (At this time the tangential and normal components of the acceleration are equal in magnitude)
1 more posts in this thread. [Missing image file: EtaCarinae.jpg]
Does anybody have a pdf of Lindberg's "The Beginnings of Western Science"? Second Ed.
5 more posts in this thread. [Missing image file: 1322017446469.png]
How is R4 isomorphic to M2x2 (the vector space of two by two matrices)? In one the elements have four varibles (x,y,z,w)^t and in the other we just have x,y since 2x2 matrices only have two variables. What gives?

/sci/ related cringeworthy moments

14 more posts in this thread. [Missing image file: 1305027256286.jpg]
>Instructor calls the term in an equation "this guy"
4 more posts in this thread. [Missing image file: space.jpg]
Hey /sci/ I am stumped on this problem. Gaseous ammonia reacts with oxygen gas to produce gaseous nitrogen monoxide and liquid water. If 750 grams of ammonia and 750 grams of oxygen gas were mixed, what maximum mass of nitrogen monoxide could be produced?
2 more posts in this thread. [Missing image file: Screen shot 2012-09-11 at 6.03.22 PM.png]
Showthat(p?q)?(¬p?r)?(q?r) is a tautology. Has to be done using logical equivalencies and not a truth table.
3 more posts in this thread. [Missing image file: 256px-Path.svg.png]
Say you have two functions, P : R -> R^3 := P(r) = x(r)i + y(r)j + z(r)k and T : R -> R. You use these two functions to define a third function v : R -> R^3 such that v(r) is a vector tangential to P at r and with length T(r). How do you define v? The only solution I can think of is the product of T(r) and the unit vector of the derivative of P(r), and thus v(r) := T(r) * dP(r) / ||dP(r)||. Is there any other way to define this function?
11 more posts in this thread. [Missing image file: Solyaris_cover-2.jpg]
I'm 25. What kind of transhumanism, singularity, life extension type of things do you think I'll see in my life time? Maybe I'm young enough to never die! 1) Assuming technological advances aren't interrupted. 2)Assuming I have, let's say, 2 million dollars saved up by then.


5 more posts in this thread. [Missing image file: adam-1024x746.jpg]
Allright, Here's the deal, I'm looking into and and all research relating to grafting an electrical system to the nerves of the human body. basically the kind of stuf that'd make 100% mobility artificial limbs possible. Recourses to check out, articles on the subject, news sites to watch, anything would be appreciated.
1 more posts in this thread. [Missing image file: funny-black-cat-scared-face-big-eyes.jpg]
So, question time /sci/. Whats the day to day activities of a chemical engineer typically? Also, job security?
6 more posts in this thread. [Missing image file: ilovejesuschrist.png]
Never forget
3 more posts in this thread. [Missing image file: eng6yo.jpg]
Hi, any website out there for gaining easy solution and answers for math-probs? As an example, typing in function and in result you get values and graphs if needed.
0 more posts in this thread. [Missing image file: janitorstrikesback.jpg]
Did someone just delete this math question thread? Wtf, janitor. So, to repeat the help I gave, if OP is still there: 1/R=0.000766 (you said this) 1/(1/R)=1/(1/R) (both are identical) insert first into second: 1/(1/R)=1/(0.000766) you take it from here.
0 more posts in this thread. [Missing image file: Andy.jpg]
Taking a class on teaching elementary math. We learn everything in base 5 to mimick the basics. After 3 classes, looking at my knowledge vs most of the rest of the class, i am now a firm believer of rote learning.

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