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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?

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?
1 more posts in this thread. [Missing image file: pia16164-43.gif]
Flashing thread
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?
25 more posts in this thread. [Missing image file: volume_vs_mass.jpg]
If there was zero error in the experiment, how many points would be on the line? (meaning if the equation for the points was created). I'm thinking that ALL points will be on that line, but I feel like this is a tricky question. The other option is that "there will always be some points that do not go through the line even if there is zero error" I know that in real life nothing is perfect but the question seems to ask about a theoretical situation. What do you guys think?

Mastering Astronomy Access Code

0 more posts in this thread. [Missing image file: 1336358028527.png]
This is a shot in the dark, but I have an introductory Astronomy class and the teacher uses Mastering Astronomy to do the homework. Is there some keygen for access codes to this website or do I have to suck it up and pay the $50? By the by, I'm looking for an access code for Bennett et al., The Essential Cosmic Perspective, 6e
4 more posts in this thread. [Missing image file: 74396_164151676940324_299713_n.jpg]
Hey guy's I'm doing a HW assignment in Stats and I'm stumped on this problem. I'd really appreciate it if someone could explain how to solve it. A professor has recorded exam grades for 20 students in his class, but one of the grades is no longer readable. If the mean score on the exam was 82 and the mean of the 19 readable scores is 84, what is the value of the unreadable scores? Thanks for the help!
0 more posts in this thread. [Missing image file: physics.jpg]
Let's see if Sci can do grade 12 physics. A box weighing 450N is hanging from two chains attached to an overhead beam at angle of 70 and 78 to the horizontal.....find the tension forces
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.
41 more posts in this thread. [Missing image file: hmmmm.jpg]
well?
3 more posts in this thread. [Missing image file: Girls.png]
why dont people like scientists?

http://www.metafuture.org/Articles/evolution-complexity.htm

0 more posts in this thread. [Missing image file: you were listening I hope.jpg]
>"Complexity theory's great contribution is showing that the Second Law of Thermodynamics is only part of the story, since some systems tend toward order, not disorder. Within nature, then, there is a deep order. But this order is not caused by the hand of God, complexity theorists are quick to point out. For physicists this is quite natural but for biologists self-organization still appears mystical, a return to pre-Darwinian theories." What does /sci/ think?
0 more posts in this thread. [Missing image file: a.jpg]
I'm not sure how to solve this, is the class ? an open cover of [0,1]x[0,1] ?
0 more posts in this thread. [Missing image file: Surface_Plasmon_Resonance_%28SPR%29.jpg]
Hey /sci/, I know it's quite specific... but doe's someone know a good book about surface plasmon resonance and how it works (on quantum level)? I'm working with SPR (Biacore) and wanna know whats happpening in that machine.
9 more posts in this thread. [Missing image file: 1318047525192.jpg]
Can you help me? Two planes leave an airport at noon. If the eastbound plane flies at 560 mph and the westbound plane flies at 500 mph, at what time will they be 2,000 miles apart? Round your answer to the nearest minute.
4 more posts in this thread. [Missing image file: telekinesis-like-a-boss-monkey.jpg]
I have a question, Is it possible to make a device that can excite matter thus making you being able to move things thru the air?
3 more posts in this thread. [Missing image file: 1334435195280.jpg]
Does anyone know a good, clear book on Axiomatic (ZF) set theory? I find most books quite hard to read, even for mathematics texts.
11 more posts in this thread. [Missing image file: ApparentPerpetumMobileMachine.png]
hi there ! why shouldn't this electric generator using capilarity action not be feasible ? - it shouldn't be expensive to build and easy to scale... source : http://en.wikipedia.org/wiki/Perpetual_motion#Apparent_perpetual_motion_machines
6 more posts in this thread. [Missing image file: 1336834898284.jpg]
>liberal arts degrees >requiring STEM students to take classes in social sciences and humanities first semester >2012 Why are colleges still doing this shit?






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