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/sci/ Science & Math

Threads added between 2013/05/15 and 2013/05/22

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Most viewed threads in this category

3 more posts in this thread. [Missing image file: pleco.jpg]
Why did armored jawless fish died out? This Pleco right here proves that their body plan wasn't shit.
20 more posts in this thread. [Missing image file: image.jpg]
How do I find the limit as x approaches infinity of (x-cos(x))/x? We shouldn't have to use l'hopitals rule but I don't see a way around it being that when I solve this I get the indeterminate form infinity over infinity. Thank you.
14 more posts in this thread. [Missing image file: image.jpg]
Hey, what's /sci/'s opinion on VSauce? Is he a faggot or a generally good source of information?
5 more posts in this thread. [Missing image file: 1282021213650.jpg]
So I have to take Calculus 1 for the summer semester, and I'm just using my old textbook. Thing is, there's a high chance the professor is gonna force us to use MyMathLab. Basically, is there a keygen or something for MyMathLab so I don't have to pay $50 for an access code? I'd rather not have to pay such an outrageous price if I can avoid it.
11 more posts in this thread. [Missing image file: person-centered-astrology.jpg]
Astrology is honestly the best branch of science available, I've learnt to much about the universe and aliens since I started my research on it.
2 more posts in this thread. [Missing image file: ku-xlarge.jpg]
First time poster on /sci/ Being trying to look into the one electron universe theory and cant seem to find much about it. Anybody that can inform me a bit more or anything?

Extremely Basic Research Proposal

1 more posts in this thread. [Missing image file: 1368521555007.jpg]
Hello /sci/ Professor wants us to write a research proposal in one night, just a hypothesis basically, but he is setting us up for failure, he said he will point out whats wrong with each of them tomorrow. If I had a week I could make a damn near perfect one, but no. He is rather arrogant too. I wanted to do something with hydroponics and hydroponic gardening on a small scale. Variables I could test include the medium in which the plant would be some-what attached to, factors affecting pH, nutrients in the water, the water itself, air being pumped into the water (as in what is in the air), etc. but I have no idea what to do that is completely original (he says if my proposal has been researched before or a similar hypothesis has been made then he will throw out my paper). So I'm stumped and need help. Pls /sci/. Gibe knowladg plos.
5 more posts in this thread. [Missing image file: teacher.jpg]
Has anyone here done a maths pgce? If so how busy were you? I am currently doing an open university degree on the side and am wondering if I will have time for both? Btw that's me in the pic. x

Webots crack

0 more posts in this thread. [Missing image file: Webots_1.png]
I have been experimenting with webots, but the 30 day trial is over and i really need to keep using it. The license cost is out of my reach. Does anybody know how to crack it o r a good crack for it?
8 more posts in this thread. [Missing image file: 1368954310066.jpg]
>200 word essay due monday >still browsing /sci/
7 more posts in this thread. [Missing image file: le rich math face.jpg]
How the fuck could the gravitational force of a black hole be infinite? I know it follows from having infinite density, but wouldn't the former force suck in all matter in the universe? I have three ideas roaming my head but maybe none are right. Anyway, enlighten me. 1. They're using it to communicate to the layman and exaggerate its magnitude. 2. We're still completely oblivious to what happens in there. 3. It really is infinite but there's a theory to prevent the consequence I mentioned. t. mathfag ignorant of physics
20 more posts in this thread. [Missing image file: nick-astronomy%20blogspot%20com-ear(...).jpg]
What would happen if a relativistic projectile hit the earth? What about if it only contacted the atmosphere? Let's say for specificity's sake it's a 100kg mass that started from alpha centauri and accelerated continuously at 5g until it hit the earth. I've calculated the energy in the projectile at ~47.6 gigatons.
3 more posts in this thread. [Missing image file: 1327043043564.gif]
So a psychologist, an engineer, and a mathematician are watching an empty building. Two people enter the building. After an hour 5 people exit the building. So the psychologist says 'obviously we weren't watching the building long enough. Some people got in before we began observing.' The engineer says 'no, clearly there's an entrance somewhere else in the building and the others got in through there'. But the mathematician says 'guys, guys, you're over thinking this. We just need to wait until three people enter then the building will be empty again.'

Debating complex problems

17 more posts in this thread. [Missing image file: home_tree.png]
Hey sci, I often find that when I'm debating people over complex topics where the other person is firm in their belief, they resort to a weird type of argument style whereby they just throw out simplistic, brief counter arguments for each argument I present. And then since they've thrown out all these counterarguments, they somehow believe they all add up to a good general counter-argument. Here's an example. (There are probably better examples but this one serves as an adequate example.) The argument: "I believe that the UFO phenomena is a real phenomena. There are many respectable people who have witnessed odd interactions with UFOs, many of them respectable people like professors, retired armed forces personnel, etc. There are many examples where military personnel have witnessed UFOs hovering outside nuclear facilities where the UFO exhibit behaviors unlike known technology. They have been tracked on radar making 90 degree turns at high velocity. They have been tracked going faster than 7000 mph. These radar observations have, in many times, been verified through visual contact. In numerous instances, the presence of these UFOs has coincided with several nuclear missiles going off line. In one example, 10 went offline in one instance. The person reporting on this event said that every once in a while 1 might go offline but 2 is an extremely rare event. The UFOs' movement seems highly controlled and not random. I'm not sure who is controlling these craft. Whether it be humans or other intelligent entities, I argue that the UFO phenomena is real." ......

Exam studying tips

20 more posts in this thread. [Missing image file: Dextroamphetamine-2D-skeletal.png]
Doing a year-round ACS review for Organic Chemistry before my final on Tuesday. Normally I'm shit at studying because I'm a fantastic procrastinator, and lazy. Since my grade is in peril, I resorted to study 'aids'. Anyone have any experiences with them? They're definitely risky in terms of overusing and abuse, but goddamn does it work wonders. Any personal stories, or other study methods would be helpful.
1 more posts in this thread. [Missing image file: Waterloo[1].jpg]
University of Waterloo >> *
1 more posts in this thread. [Missing image file: 76px-Wooden_hourglass_3.jpg]
Browsing /b/ and found a pic with a troll OP but someone there claimed math graduate and after finding the obvious answer of (8/3)x+13 he proceeded to find the inverse function of F(g(x)). Here is the thread; >>>/b/481451187 Did he find the inverse correctly?
1 more posts in this thread. [Missing image file: image.jpg]
I have an additional mathematics exam tomorrow, and have revised for hours but am still fucked, any help or advice?
1 more posts in this thread. [Missing image file: carry.png]
this is how it work?
4 more posts in this thread. [Missing image file: big-fat-cat.jpg]
can someone explain how this works? https://www.youtube.com/watch?v=SuU68JRctXQ pic unrelated






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