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/sci/ Science & Math

Threads added between 2013/05/29 and 2013/06/05

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Most viewed threads in this category

27 more posts in this thread. [Missing image file: Purchased-Math-Mania-Image-Fotolia_(...).jpg]
Hey can you guys help me on this math problem? a ball is dropped from a height of 3m and bounces on the ground . At the top of each bounce, the ball reaches 60% of its previous height. Calculate the total distance traveled by the ball when it hits the ground for the fifth time
21 more posts in this thread. [Missing image file: explosion.jpg]
Ok /sci/ I've got a math question. I just can't figure it out, though I bet it's simple. The question is: Find a 2x2 Matrix which has this property A^2=-I or the matrix squared equals a negative Identity matrix. My teacher hasn't really covered anything related to this so I'm at my wits end.
5 more posts in this thread. [Missing image file: 1369289771817.jpg]
So /sci/ how do I cram best? I've basically left an entire term of Calculus and Linear Algebra to one single week. My test is on the 15th. What's the best way of doing this? I need a 70% or above on this final exam to pass the class. It seems time goes so quickly..I was working tonight, started at 10 and before I knew it, it was 3AM (now) and I'm about to go to bed... Also I've got a bunch of other exams I haven't studied for. Need to fit them in. Computer science, etc. Please, help me /sci/!
19 more posts in this thread. [Missing image file: GUIDE I'M USING.png]
Anyone able to help with some statistical tests? Just need to work out which test to use in each scenario (using SPSS) Estimating IQ based upon Gender; where it is assume that Males will estimate theirs higher than females. So, the DV is EstIQ, and IV is Gender... so... Since the IV is Catagorical with 2 levels (Male / Female), and the DV is an Interval variable (SD of IQ for this being 15), would it be right to choose an Independent Samples T-Test, or a One Way Anova? >Pic somewhat related >It's a guide were supposed to use for this, but I get conflicting things from the internet
0 more posts in this thread. [Missing image file: 1280-engineering-humans.jpg]
I'm studying mechanical Engineering in Canada. My question is: is it worth doing a year long internship? I recently finished my 4th year, but I have one more year to go because I still have some courses left to do as well as my thesis project. If I did a year long internship it would mean I would get my degree in 6 years instead of 5 years. Is it worth staying an extra year to do an internship? I don't go to a prestigious university and My GPA is 2.5 right now... would it be hard to find a job after graduation if I didn't do an internship?


1 more posts in this thread. [Missing image file: pbd_sm.jpg]
Planetary resources is 75% of the way to a publicly controlled telescope in orbit!
2 more posts in this thread. [Missing image file: math.jpg]
A challenge for you, sci. You have 5 minutes to compute a numerical value, correct within 10%, of the following integral: \frac{1}{2\pi}\int_0^{2\pi}sin^{100}(x)dx (I don't care if you take more than 5 minutes, but if you're good, you can do it. I got it in a bit more, and I had to look up a -famous- formula on the web) Go!
11 more posts in this thread. [Missing image file: 936674_491316760938358_1538536887_n.jpg]
get to know that other hole in your body, and you have 2 of them
11 more posts in this thread. [Missing image file: m109franke2400.jpg]
Ok /sci/, I have a hypothesis. Before the Big Bang, gravity surrounded the existing Universe which was subatomic, and was pushing in toward the dense point of matter. When the thermal pressure inside the dense point reached a maximum energy, it exploded into the area of gravity that surrounded it in all dimensions and therefore made the early Universe contain an extreme and high-magnitude temperature. While the Universe continues its expansion over time, it starts to organize in dense areas where gravity can have an influence. This typically began with massive clusters that collapsed on themselves and formed supermassive black holes, which then as a consequence, pulled in surrounding cosmic matter around themselves. This process generated an outstanding amount of heat in the early galaxies as they accreted, which as a result took matter and organized the "energy" in certain areas of the Universe on the grand scale. As the Universe is still expanding from the initial momentum, natural negative temperatures are created in the process because of very cold regions that now existed as a result of more space being created and matter being organized into galaxies (thus letting the temperatures get cooler in many zones). These negative temperatures are the hottest systems in the world, and have enough power to generate a force that counteracts the gravitational force pulling inward. Now why is the Universe accelerating? It is because of these negative temperatures that induce a spacial effect on the edges of the Universe where it can reach below absolute zero, and that drives the expansion of the Universe. The process is similar to what happens when a star explodes, except negative temperatures aren't created.
2 more posts in this thread. [Missing image file: white zin.png]
hello /sci/ I don't come here quite often but I need a bit of help. I am trying to find the components of Franzia white zinfandel for an experiment. Finding the manufacturer's ingredients are proving difficult. After some simple searching, I've found that its alcohol content is around 13%, but I'd like to know the minor acids as well as the amount of tartaric and malic acid in it as well. Using this information I will be titrating a mixture of these acids (mostly tartaric and malic) to see if a similar matrix effect occurs. tl;dr, are there any specific wine/food sites that can help me with the components of franzia white zin?
15 more posts in this thread. [Missing image file: original.jpg]
-America is the largest energy consumer in the world - America is the largest polluter per capita - America is the largest consumer of oil - America is the only country in the western world to not have ratified the Kyoto protocol clearly, America has a huge negative impact on the global environment. Even if you compared the US to the EU, the US would probably still have worse effects. Realistically...would it be likely for America to alter it's current consumption patterns? I realize that that big business will forever an always have an influence in politics, but what about if big business renewable energy/clean energy companies have the largest influence in Washington? Would that be a realistic hope, or are we all in serious trouble?
18 more posts in this thread. [Missing image file: Immanuel kant.jpg]
I'm reading a book for my own personal interest. It's called "The miracle of theism" by someone called Mackie. I'm only 40 pages and 2 chapters in and its really hard to read... i'm now on chapter 3 and the author uses all these words like "Positive Existential" and "Syntetic Judgement" and "Analytic judgement" without even defining what these terms mean... I have had no formal teaching in philosophy and while i could just try and Google these terms to improve my understanding do you think that jumping into this book as a philosophy begginer is a bit silly? What books should i be looking to read first? Pic related, it's Kant, he criticizes the ontological argument but i have no clue what he's saying


13 more posts in this thread. [Missing image file: rcXPWHM.jpg]
I normally wouldn't do this, but I REALLY need some help here. If you can answer any of these questions or point me to any site that answers these, I would be greatly appreciative.
12 more posts in this thread. [Missing image file: doctor.jpg]
What is medical school like? Not interested in the area, just curious. I've been told it's very different than other schools.
18 more posts in this thread. [Missing image file: 1370414873630.jpg]
Any UK fags doing Probability and Statistics 3 tomorrow? How are you feeling for it?
10 more posts in this thread. [Missing image file: oranges.jpg]
If 1000 oranges (nothing more, just a shit ton of oranges) were to be subjected to extreme heat and extreme pressure for hundreds of thousands of years, what would be the outcome of the oranges? Would they compress into a dense material like a rock?
77 more posts in this thread. [Missing image file: 1368994339284.jpg]
Realistically, how long till we get the next major development in Space flight?
0 more posts in this thread. [Missing image file: 129895289183491.jpg]
/sci/, can you help me be the finger man?
13 more posts in this thread. [Missing image file: sadman.jpg]
>graduate from MSc >6 months later >nojobs I should've gone into engineering or computer science...

Things Teachers Don't Understand

2 more posts in this thread. [Missing image file: Mona-Lisa-Bitch-Please[1].jpg]
>mfw my middle school math teacher said that .999.... does not equal 1 >mfw my high school math teacher tried to debate me about .999..=1 and left with his hands in the air

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