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/sci/ Science & Math

Threads added between 2013/02/20 and 2013/02/27

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Most viewed threads in this category

19 more posts in this thread. [Missing image file: Untitled.png]
Write a C program that calculates the squares and cubes of the numbers from 0 to the integer N, which is not greater than 10. Allow the user to input the integer N from the keyboard and use tabs to print the values in a table in the form shown below. Comment your program liberally. My problem is that my professor wants it 0 to N not N to 0 as shown in the picture. Any one know how to flip it???

Basic Chemistry Homework Help

11 more posts in this thread. [Missing image file: 1360981159681.jpg]
For some reason, I cannot understand this problem: An 18 karat gold necklace is 75% gold by mass, 16% silver, and 9.0% copper. A. What is the mass, in grams of the necklace if it contains 0.24 oz of silver. The correct answer is: 43g of 18-karat gold. But I cannot wrap my head around how this was answered, please walk be through the steps. Thanks for your help

Picmonic USMLE Step 1

0 more posts in this thread. [Missing image file: 0.jpg]
Does anyone have any links/torrents for the USMLE prep cards known as Picmonic? Here is an example of it...
4 more posts in this thread. [Missing image file: tower.jpg]
Sup dudes You guys mind giving me a hint for what kind of math will be needed to solve problem 416 of Project Euler? http://projecteuler.net/problem=416 It's combinatorics right? But can someone please point me in the right direction?
7 more posts in this thread. [Missing image file: MASA_Polymaths.jpg]
People say that being a polymath that master all sciences is impossible in this day and age. That one cannot learn it all cause there is too much to know now. But the polymaths of old didn't get degrees? They studied 12 hours a day all their lives. Maybe 10 years of math, 8 years of physics, 9 years of chemistry. They all began to teach when they where like 60? Why can't you do the same today? A polymath would make someone with a PhD in just 8 years of academic Physics seem like an illiterate.
11 more posts in this thread. [Missing image file: brainscan.jpg]
Are humans truly random creatures with free will or can we be predicted using scans and math?
14 more posts in this thread. [Missing image file: w9wQk.png]
troll science?
23 more posts in this thread. [Missing image file: 030192026250lg[1].jpg]
/sci/ Real quick easy questions: According to the msds of Klean-Strip S-L-X Denatured Alcohol, it contains >40-50% EtOH >50-55% MeOH >1-4% methyl isobutyl ketone How can I successfully separate these? I've heard bad things about distillation a mixture of etoh/meoh due to close boiling points.
17 more posts in this thread. [Missing image file: tumblr_m6cuexGLDl1rq0qkjo1_500.png]
Are real numbers a subset of complex numbers?


37 more posts in this thread. [Missing image file: stoichiometryTitle.gif]
Can anybody teach me how to stoichiometry
0 more posts in this thread. [Missing image file: while_you_were_sleeping_01.jpg]
Hey, /sci/, question. Would it be correct to call an inner product preserving map an isometry? Or is it only used in regards to normed spaces? If it's not, what would be the correct term? Pic unrelated, my desktop background.
2 more posts in this thread. [Missing image file: 1348436701203.jpg]
>Cant even multiply divide add or subtract fractions >Don't know what an exponent is >Last math class was geometry back in 11th grade where i got a D >Go to /sci/ and ask 'How do i math?" >Go to khanacademy faggot >Do it >now I'm blasting through precalculus Just wanted to stop by and say thanks.
0 more posts in this thread. [Missing image file: 1RBs94q.png]
I remember reading/watching somewhere that scientist solved the mystery of planetary formation by bringing a bag of salt (or maybe it was sugar) into a space. The zero gravity environment made the crystals float around but they suddenly started forming clumps of salt. Did this happen or am I imagining it?
17 more posts in this thread. [Missing image file: plasma.currents.jpg]
ELECTRIC UNIVERSE THEORY http://www.youtube.com/watch?v=5AUA7XS0TvA&feature=youtu.be&t=1m20s kindly discuss. the video is only available for a limited time on youtube. It is 1 hour long. Please watch fully, then discuss.

Rejected: Peer Reviewers on Strike

4 more posts in this thread. [Missing image file: flying_cow.jpg]
Peer review is the evaluation of work by one or more people of similar competence to the producers of the work (peers.) It constitutes a form of self-regulation by qualified members of a profession within the relevant field (from wikipedia). So far, so good. However, peer-reviewing, in many scientific professions, is a free service that is mostly performed by scientists on short-running positions, who do not have any time to waste on their peer's garbage. This renders the peer-reviewing process to have very low quality, and as a result a large proportion of scientific articles are not worth reading. We want to help fixing this system. We demand a comprehensive scheme of compensation for peer reviewing. Quality control must not be an act of charity: it needs to be recognized as a valuable part in the academic process. Join the process.

Where did I go wrong?? Lol.

6 more posts in this thread. [Missing image file: 4f0a31ee18613326530005d9.png]
I did the math... I the votes are coming, we will not reach the goal of 500k votes... My calculations show 1 vote per 10 seconds from 421,470 Votes. Too reach 500k votes, you would need too subtract, 421,470 from 500k = 78530. Now Per 10 seconds = 1 vote. 42147 / 10 = 42147. Now we can divide that by the 1(hour), which will become our prediction. 42147 / 60 = 702.45. Now we can see It will take 702.45 hours for 500k votes. Lets shorten it by days! 702.45 / 24(Hours) = 29.268 Days! -------------------------------------------------------------------- I know this is wrong, but please show me how too solve this. My head will explode if I don't learn. I literally out of the blue became interest in this type of math lol.
5 more posts in this thread. [Missing image file: images (1).jpg]
If csc(x)=6, for 90 degrees < x < 180 degrees, then Sin(pi/x)= Cos(pi/x)= Tan(pi/x)= image unrelated
17 more posts in this thread. [Missing image file: 1353520551211.jpg]
Why do scientists have such a pattern bias? They try to find reason and order in chaotic things. They always try to quantify things and come up with false conclusions. Yellowstone national park has erupted every 640,000 years or so therefore it will erupt soon because it's been 640,000 years since the last eruption. That's fucking stupid. You have a sample size of THREE past eruptions and they happen to be roughly the same distance apart so you assume that it's a linear event? Moron. Same with economists and inflation. They think inflation is something that will creep up on a linear scale and that we'll see it coming despite the fact that that has NEVER happened. Inflation randomly hits one month and no one knows why. Even Milton Friedman, a nobel prize winning economist said no one truly understands monetary inflation because it's a random event, yet people always try to see it coming with bullshit guages like consumer price index. What's with academics and trying to find patterns in every thing?
16 more posts in this thread. [Missing image file: bionic-hand-660.jpg]
So with the recent growth in bionic attachments how long till it gets to the point that the attachments outdo the human body?
16 more posts in this thread. [Missing image file: geologist.png]
geologyfags get in here ITT: what first attracted us to geology >be in 8th grade art looking up sculpture ideas >stumble upon a site about "natural art" (different mineral formations) >fell in love with mineralogy >learned to love geology

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