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/sci/ Science & Math

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Most viewed threads in this category

6 more posts in this thread. [Missing image file: wade.jpg]
Anyone has this book in pdf? An Introduction to Analysis by Wade
10 more posts in this thread. [Missing image file: 1330616756020.jpg]
Why do your testicles go chilled after ejaculation?
1 more posts in this thread. [Missing image file: pia16164-43.gif]
Flashing thread

Spivak 4th edition PDF

11 more posts in this thread. [Missing image file: 31ESrmEz0-L._SL500_AA300_[1].jpg]
anyone got a pdf of spivak's calculus 4th edition?
6 more posts in this thread. [Missing image file: 1338634591372.jpg]
5.74*10^17 electrons flow through a wire in 250 ms. What is the current in amperes?
6 more posts in this thread. [Missing image file: 1347090289290.jpg]
>wearing my "May the d/dt (mv) be with you" community college physics club shirt >walking into steak n shake at 4 in the morning with friend for some late night coffee banter and maybe some studying >young girl my age with some friends standing at register looks at me and says she loves my shirt >I say "t-thanks" without even stopping head towards a booth I turned that steak n shake into a spaghetti warehouse that's the first time a female I didn't know has spoken to me in like 7 or 8 months inspite of my poor social skills why not celebrate a fellow autist engineerfag who has made it in one of the hardest social games of all time?
14 more posts in this thread. [Missing image file: 00000615.jpg]
Why the fuck do unmyelinated axons with larger diameters conduct action potentials faster? I can't wrap my head around it. Sure, if you have a larger diameter, then that means more overall membrane, which means more ion channels, allowing a larger amount of ions to cross the membrane at any one time, increasing the current, which makes the membrane reach the threshold potential faster. BUT CONDUCTANCE IS FUCKING LATERAL, isn't it? I mean, its along the membrane. An axon depolarises depending on the activity of the ion channels directly adjacent to it. So wouldn't it be a case of ion channel density that increases conduction velocity? Not homework, not asking /sci/ to do shit for me, just reading up on this shit and can't seem to understand this little part right here.
14 more posts in this thread. [Missing image file: ohnoimretarded.png]
Can someone explain this to me please? I transferred to a college in a different province than where I took math in high school and that was 4 years ago. I can't figure out how to find the function of x that would be the distance. It seems to me it would be somewhat similar to 1/x in terms of graphing, but I sincerely doubt that Doug is going to give me marks for eyeballing a function. Yes, I googled it. No, I haven't found something relative yet.
10 more posts in this thread. [Missing image file: 1327454603850.jpg]
>"Extraterrestrial life exists!" >"You have no proof." >"True, but there's so many planets out there that it's almost impossible for all of those planets to be uninhabited." >"That's merely an assumption, just because there COULD be life on other planets doesn't mean there is." >"But....muh planets...." >"Just stop." >"God exists!" >"You have no proof." >"True, but the universe is so well-organized that it's almost impossible that the universe just randomly sprouted into existence with no outside intervention whatsoever." >"That's just an assumption, just because there COULD be a God doesn't mean there is one." >"But...muh intelligent design..." >"Just stop."
4 more posts in this thread. [Missing image file: wallpaper-1190052.png]
Anyone knows some good Chemistry documentaries? preferebly about explosives, famous chemists and the history of chemistry around the 1800's.
12 more posts in this thread. [Missing image file: 1338962229367.jpg]
>tfw start studying for PCAT just one week before the test date >tfw recall pretty much everything >tfw learn new material easily >tfw 512 composite You guys should try being intelligent, it's awesome.
23 more posts in this thread. [Missing image file: walter.jpg]
The wave function: <x|?> = ?(x) = Ne^(ikx)e^((-x^2)/2a^?2)) has a momentum of k in the positive, x-direction. (a) Normalize the wave function. (b) Find the probability that the particle will be found on the positive x-axis. personal interest, this obviously isn't homework. watdo, /sci/? exprain please step by step.
7 more posts in this thread. [Missing image file: wrapping_paper-binary.jpg]
sup /sci/, I have a test today on binary operations, everything seems simple enough with addition, multiplication and division, however when I have to subtract without changing the number to be subtracted to a twos compliment, I run into issues. I understand the borrowing technique, and it is easy enough when there is a one to borrow on the immediate column to the left, however, I am really unclear on the mechanics when you have to borrow from a further place to the left, what happens to all the numbers inbetween? for example, 10001- 11, so its 1 - 1 first, easy, 0; then its 0-1, so you have to borrow, but what happens to all these zeroes inbetween? do I just ignore them and take the one from the very left and make the zero im working with 10 (2) ? i have a feeling this is way wrong... any help?
4 more posts in this thread. [Missing image file: vlcsnap-2012-09-15-17h40m54s192.jpg]
22 more posts in this thread. [Missing image file: brofist.jpg]
the human race will in time consume this galaxy like a virus agree or disagree? the goal: consume and destroy humanity at all costs
6 more posts in this thread. [Missing image file: 1331016123029.jpg]
So we (USA) got 10K nukes. why don't we take 5K nukes, use them to make hydro, and everybody has free gas forever?
6 more posts in this thread. [Missing image file: Schrodinger.jpg]
I have a question pertaining to skipping college classes. I've done an immense amount of independent studies outside of the AP curriculum. This includes linear algebra, differential equations, classical mechanics, and introductory quantum mechanics (not quite finished, still in progress). When I say independent study, I mean that I purchased a book, bought all of the material that comes with it, and did all work and exams (passing). Is there college tests I can take so that I can skip the college courses (outside of the AP curriculum) I have already rigorously studied? previous AP exam scores: 5 5's, 3 4's, and 1 3.
21 more posts in this thread. [Missing image file: stan.png]
What is space?

homework spam

0 more posts in this thread. [Missing image file: whycanti.png]
So I don't really want anyone to do my homework for me, I'm gonna work it out on my own anyway and I'm certainly not asking anyone to write out the proof. Anyway, I've got this question on my abstract algebra homework: Prove that the dihedral group of order 6 does not have a subgroup of order 4. And I don't really get the concept here. What, exactly, is the dihedral group of order 6? I know D4 is the symmetry lines of a square, does that mean D6 is just gonna be all the symmetry lines of a hexagon? And how would I go about proving this, like my gut response is just to say that D4 includes diagonal symmetry that D6 doesn't have but that seems way too simple, would a subgroup of order 4 have to be D4 or could it just be any group or symmetries with 6 elements. Or wait, do I have this completely wrong and D6 is a triangle's symmetries? Sorry to spam with homework, I haven't bought the textbook yet and really just do not get what this question is asking, I'd appreciate if anyone could clarify, I don't get this shit at all.
3 more posts in this thread. [Missing image file: Girls.png]
why dont people like scientists?

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