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/sci/ Science & Math

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Most viewed threads in this category

18 more posts in this thread. [Missing image file: photo.jpg]
Help me out here, /sci/ I have my physics final at 3:30 and can't solve this problem for the life of me. A uniform solid sphere rolls down an incline. (a) What must be the incline angle if the linear acceleration of the center of the sphere is to have a magnitude of 0.05g? (b) If a frictionless block were to slide down the incline at that angle, would its acceleration magnitude be more than, less than, or equal to 0.05g? Why? (The moment of inertia of a sphere, I=(2/5)MR2) Also, have no idea what the img will be, just the first thing I could find on this library computer.
57 more posts in this thread. [Missing image file: 1344041038988.jpg]
let's learn some math. I'm going to go over paul's online notes cal3.
1 more posts in this thread. [Missing image file: 1279918179548s.jpg]
Hey /sci/, I need some help with quadratics. Specifically converting a Quadratic formula from Standard form to Vertex from by completing the square. My teacher cant explain things well and our shitty book doesnt explain in the examples, it just does a problem. So I thought you folks could do a better job. Ill just use a question from my HW because I cant make up one that will work y=2x^2+6x-3 y=x^2+3x-1.5 1.5=x^2+3x+2.25 3.75=x^2+3x+2.25 0=x^2+3x-1.5 (x +_)(x -_) Thats as far as I got. I feel like I did something wrong along the way.
11 more posts in this thread. [Missing image file: 1351037910063.jpg]
Just got denied from Princeton, rip.
18 more posts in this thread. [Missing image file: 1303325967912.gif]
Hey /sci/ A ball rolls down a hill. You're given the hills height and length along with the balls mass and size (Let's say its in a vacuum) Can you give me the formula for calculating how long it takes for the ball to reach the end of the hill? Keep the shitstorm as calm as possible pls.
0 more posts in this thread. [Missing image file: Untitled.png]
This is the problem I have to do. Could you please point me in the direction of a video/text that will teach me how to do this? Find and design minimum realisation of a binary counter which repeats sequence 0,4,3,7,1,6,5,2 for K=0 and sequence 0,5,6,1,7,3,4,2 for K=1. Do so by using a) RS flip flop b) D flip flop c) JK flip flop (Pic, obviously, unrelated)
13 more posts in this thread. [Missing image file: imgres.jpg]
Do hypnosis really work?
45 more posts in this thread. [Missing image file: 1346525484668.gif]
Hey guys. I managed to pass my Calc I class somehow. Must have accumulated good karma or something, because I was lost as fuck in that class. The professor was one of those guys who taught why something the way it was instead of how you do the problems. That said, I have to take Calc II now. Apparently, this is the hardest Calc class in the sequence? I'm pretty bad at math, I just want to pass them and get it out of the way. Do you guys have any tips for Calc II? What do I actually learn about in it? pic somewhat related, mfw I do math
18 more posts in this thread. [Missing image file: Richard_Feynman_Nobel.jpg]
do you /sci/entists have any sort of creative outlet in your life? I'm starting to go mad studying physics 24/7...I need to see the other side of life....what do you guys do on the other side of science?
8 more posts in this thread. [Missing image file: supermandrinks.gif]
does an MS in math qualify me to do jack shit? I push boxes around for peanuts and I'm one misfortune from blowing my fucking brains out.
79 more posts in this thread. [Missing image file: dav_soc.jpg]
So this guy lived to see 70 eating only but bread. Many others lived to 90 on the same diet. Tell me why I'm eating anything else than carbs again?
197 more posts in this thread. [Missing image file: history.gif]
If life ever developped sentience before mankind, wouldn't they have had a huge time span to reach Earth at least once in the past 1.9 billion years? Just considering the possibility of near to c speeds of interstellar travel they would have had 950 million years to get here. So we can be fairly certain that there is no intelligent life, or an interstellar civilisation in a 950 million lightyear radius around Earth. If we assume the highest speed achievable with engineering would be half the speed of light that would mean there is absolutely no life in a 425 million light year radius around Earth. It would take 950 million years for light of Earth to reach their planet and then they would travel for another 950 million years if they master near c relativistic speeds. If they only master half the speed of light that would mean light from Earth would take 633 million years to get to their planet and and they would need 1267 million years to get to Earth. If we consider any advanced civilization to achieve at least 0.005% c at one point in their history then we can assume that in a radius of about 94.9 thousand lightyears around Earth there is or was no other technological civilization ever.
26 more posts in this thread. [Missing image file: 1355918036229.jpg]
Why is it that fapping in the morning helps wake you up but fapping at night helps you fall to sleep?

Worst calculus

1 more posts in this thread. [Missing image file: hell.png]
Hey /sci/ What's the worst calculus you went through or made you give up? Just found mine: \lim_{x \rightarrow +\infty}\cosh{x}^{\sinh{x}}-\sinh{x}^{\cosh{x}}
4 more posts in this thread. [Missing image file: images.jpg]
Hey there /sci/. I don't know if this is the right place to ask, but i need help. Can any of you explain to me how does the rand() function work in C? I mean, how does its code works, not how to use the function. Thanks in advance.
6 more posts in this thread. [Missing image file: Calcium_unter_Argon_Schutzgasatmosphäre.jpg]
What you guys' opinion on calcium?
2 more posts in this thread. [Missing image file: illusionpeak.jpg]
>>444512889 So, since this could never happen, according to the scientifically minded, what we're looking for is basically an escape. A realistic alternative for those who wont or cant take ascension seriously. >10 billion people >more every day >limited resources >less every day >limited capacity of the planet to support life >more polluted every day begin the discussion of timeline for cybernetic technology to arise so we may escape our polluted bodies and planet >before its too late
8 more posts in this thread. [Missing image file: 2010-07-15_euler_identity (1).jpg]
Anyone else have their mind blown with power series? Isn't it incredible how this formula is true?
4 more posts in this thread. [Missing image file: UK-education.gif]
Is a MSci degree considered a full masters degree? And would it be unnecessary to follow it up with a standalone Msc degree?

Stats and busstops

5 more posts in this thread. [Missing image file: 089-Normal-Distribution.jpg]
Any other examples of seeing gaussian curve in so pure form in nature?






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