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/sci/ Science & Math

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Most viewed threads in this category

42 more posts in this thread. [Missing image file: Midterms.jpg]
Exactly how much harder does Engineering get after Statics and Linear Algebra?
15 more posts in this thread. [Missing image file: love-and-other-drugs-poster-uk.jpg]
Can anyone explain HOW tanning makes a person look more muscular? /fit/ sure as hell couldn't. I haven't really been able to find an answer to this anywhere. Usually, it's just a bunch of imbiciles saying "yeah, it does make you look better" or it "looks healthier.
1 more posts in this thread. [Missing image file: 1347500675597.jpg]
a pinata of mass M=12kg hangs on a rope of negligible mas that is strung between the tops of two vertical poles. The horizontal distance between the poles is D=2.0m the top of the right pole is a vertical distance h=0.50m higher than the top of the left pole, and the total lenght of the rope between the poles is L=3.0m. The pinata is attached to the ring, with the rope passing through the ccentre of the ring. The ring is frictionless, so that it can slide freely along the rope untill t the pinata comes to a point of static equilibrium. a)determine the distance form the top of the left(lower) pole to the ring when the pinata is in static equilibrium (b) what is the tension in the rope when the pinata is at this point in static equilibrium? >guys please help ive been doing this for 5 hours, i end up with 3 unknowns and they all cancel out.
12 more posts in this thread. [Missing image file: RNA.jpg]
How would someone go about having anti-gravity sex?
29 more posts in this thread. [Missing image file: cat-7813.jpg]
How do cats know to scratch at a closed door to get their owner to open it? There aren't any doors in nature to scratch at.
13 more posts in this thread. [Missing image file: difficult geometry problem.png]
help pl0x

Confessions of a Particle Physicist

7 more posts in this thread. [Missing image file: Lies.gif]
I must admit something. My name is Dr. Richard T. Bale, and I hate every single one of you. I'm a practiced particle physicist for the last 32 years; graduated with honors from Duke in my early 20s, then having gained my Ph.D in physics from Edinburgh shortly thereafter. I was soon picked up by company to remain unnamed for various projects, including the search for the Higgs Boson, which had lead me to a short employement at CERN within these last few years. ...we make it all up... Not a damned night goes by in how I wonder that we've come to far by such an asinine and preposterous understanding of science. There are times I compare my practice to that of spinning a bottle at some 14-year-old girl's birthday, regarding how we choose our fundamental deductions. Frankly, I haven't the slightly inkling how we've not yet blown ourselves up save for some unfortunate people in Japan, for whom we are wholly responsible in crimes against humanity. We're ignorant children playing with a lighter, enamored by the flame in a tribal-like delusion of strength and power, and one of these days we're going to burn down our homes, lands, and very existance from this little blue ball we call Earth. I've retired early in disgust with these so-called "sciences", and pray those aspiring in the same field do not lower themselves to be clowns in this circus of lies and arrogance. This old codger is through with the parade, and done wearing masks.
5 more posts in this thread. [Missing image file: 1349978955045a.png]
What is P_v when used in the context of laser dynamics?
24 more posts in this thread. [Missing image file: 1347161564949.jpg]
Has anyone here ever had real trouble with a college class before? I'm struggling with Chem103 currently and can't seem to catch up. I got a D+ on the first exam of the semester and have pretty much failed all the mini quizzes my TA gives me. I study the material and do all the homework but for some reason when it comes time to take a test I can't figure things out anymore. I'm considering hiring a tutor but I don't know if that's necessary yet.
1 more posts in this thread. [Missing image file: 1313759162877.jpg]
Hey /sci/ a friend of mine who is not good at math signed up for statistics honors. I have no idea what they were thinking, but here's a problem they can't figure out. I've never taken stat so if you know of any resources on how to solve this or send me on my way to solving it, or if you could just explain what needs to be done, or if you know of example problems that,d be great. Ideally though I'd rather not bother putting much time into helping them, but they're a good friend of mine. TLDR: i need some resources so i can teach my friend how to solve this or if you guys want, take a crack at it. Neuroblastoma, a rare form of malignant tumor, occurs in 11 children in a million so its probability is 0.000011. Four cases of neuroblastoma occurred in Oak Park, Illinois, which had 12,429 children a_ Assuming that neuroblastoma occurs as usual, find the mean and standard deviation of cases in groups of 12,429 children. b_ Find the probability of that the number of neuroblastoma cases in a group of 12,429 children is 0 or 1. c_ Does the cluster of four cases in Oak Park, Illinois, appear to be attributable to random chance? Why or Why not? I'll delete the thread as soon as i get what I need.


1 more posts in this thread. [Missing image file: Capture.jpg]
halp pls
5 more posts in this thread. [Missing image file: 1349128048373.jpg]
So /sci/, why do scientists, when they discover water on other planets, say it must have life or could have life? Why can't planets without water have life, with beings that don't NEED water like we do? This never made sense to me.
2 more posts in this thread. [Missing image file: hgntY.png]
>be taking circuits and mechanics course in first yr uni, new prof for it never taught at school before >think its going to be difficult from looking at old exams, pretty excited to learn about robotic systems >mfw for the mid term exam worth 30% we are allowed to bring in a cheat sheet, and the problems are as simple as "find the time a ball is in the air when shot at 20 m/s vertically"
22 more posts in this thread. [Missing image file: eso1241a.jpg]
"European astronomers have discovered a planet with about the mass of the Earth orbiting a star in the Alpha Centauri system — the nearest to Earth. It is also the lightest exoplanet ever discovered around a star like the Sun." how about that
0 more posts in this thread. [Missing image file: redspider5.jpg]
0 more posts in this thread. [Missing image file: 6a00d8341bf7f753ef00e54f36bbc88834-800wi.jpg]
Why don't we put a bunch of buoys with fission cores in them up by the poles so they produce lots of steam and cause snowfall to replenish the ice?

Full Building Toilet Flush, 11-11 11:11:11

2 more posts in this thread. [Missing image file: Jar-Jar-Binks-and-Elvis.jpg]
just curious... would a student walkout to the bathroom... (sans hall pass of course) in synchrony at 12:12:12 on 12-12-12 to the restrooms, to flush all things flushable, aka toilets and urinals and sinks and basically anything plumbing related, cause a disturbance in said plumbing system? Just a thought,,,
5 more posts in this thread. [Missing image file: snowflake200706visual[1].jpg]
Are there any good websites online which help me to train and improve my visual pattern recognition skills?
17 more posts in this thread. [Missing image file: get-real.gif]
If an irrational number like ?2 or ?7 can be raised to the power 2 to become rational, can something similar be said for something like e or ?? What I'm asking is: is it possible to raise ?/e/? to a rational, irrational or imaginary power and calculate a rational answer? Is this difficult to prove/disprove?
1 more posts in this thread. [Missing image file: 1338300069852.jpg]
why is the ocean so fundamental to human existence? and what do you think the degradation of such an expansive pool of life will impact those who are so foolishly exploiting its splendor?

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