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/sci/ Science & Math

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Most viewed threads in this category

Starting Out With Java: From Control Structures Through Objects PDF

19 more posts in this thread. [Missing image file: 41O2dc6AaqL._SL500_AA300_.jpg]
Hello /g/. I am looking for a proper PDF for the book Starting Out With Java: From Control Structures Through Objects. I tried looking for it online but could only find one version on Pirate Bay and all the file lockers. The problem with that version is that the text is very low quality making it hard to read. It is basically just a straight scan without addition of any tags or bookmarks. It would be great if you could find me a better version of this book. I would prefer fifth edition but fourth edition would also be great. Thanks!
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At 35 degrees C, K=1.6x10^-5 for the reaction 2NOCl -> 2NO + Cl2. Calculate concentration at equilibrium when 1 mol NOCl and 1 mol NO is initially put in a 1L flask. How do I set this shit up, it makes no sense to me.
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exp(-ix)=cosx-isinx square both sides exp(-2ix)=(cosx)^2 - (sinx)^2 - i2sinxcosx l.h.s can be written again as cos2x-isin2x=(cosx)^2 - (sinx)^2 - isin2x cos2x=(cosx)^2 - (sinx)^2 cos2x=2(cosx)^2 - 1 voila!

Handwriting & Intelligence

34 more posts in this thread. [Missing image file: lot_stevens_witness_statement.jpg]
"On average, people with messy handwriting are more intelligent, for the following reasons: 1) Messy handwriting is intended mainly for the writer to read and not others, this indicates the writer is introverted, and therefore more inward thinking and intelligent. 2) When the writer reads the messy writing. He is reading fragments from the page and filling in the illegible gaps with his memory and predictions. As writing and reading is a common occurrence, messy writing would increase intelligence. 3) Messy writing may be the produce of fast handwriting, which would be needed of fast-thinkers." /discuss
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Need halp. The mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6. What is the probability that an individual's clotting time will be less than 7 second or greater than 8 seconds. Assume normal distribution.
7 more posts in this thread. [Missing image file: Methylamine-3D-balls[1].png]
Chemistry question here How would you distinguish between two aqueous samples of ammonia and methylamine? I know that the second one would be more basic but I'm not too sure where to go from there. Universal Indicator sounds like an option but I'm not too sure.

basic stoichiometry help please!

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the equation is; CuCO3 x Cu(OH)2 --> 2 CuO + CO2 + H2O basic lab info: Mass of evaporating dish: 21.16g mass of dish + basic cupric carbonate: 22.12 ~ Mass of CuO used is 0.83g ~ Mass of basic cupric carbonate used is 0.99g Question: 1.) Calculate theoretical yield of CuO that should have been formed had you done everything perfectly: 2.) Calculate your actual yield of copper(II) oxide from the date recorded during experiment 3.) Calculate the absolute error. How do I get the information to the questions? I do not understand how to find the following. It will be much appreciated if steps are shows, or basic idea is given. thank you!
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estimate the work you do to mow a lawn 10m by 20m Assume you're pusing with a force of about 15N
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Britfag here, if I want to be considered as a possible student at any university on a physics degree, to what level should I teach myself maths? I'm currently doing both physics and chemistry at A-level, but I know they'll want me to know maths more advanced than they do in physics. I'm more than happy to put the work in, I just don't know at what point I should stop, and it's always easier when you've a solid goal.
26 more posts in this thread. [Missing image file: 1366509230700.jpg]
If you can't physically confirm something exists out of your realm of view and perspective How do you know it exists? How do you know other people are just as conscious as you? How do you know they aren't manifestations and projections of your own consciousness?

putas

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blanadndqdqo
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wat

Self-reliance, alternative energy, and you.

13 more posts in this thread. [Missing image file: wind-farm-land.jpg]
Hey, /sci/. /k/ here. I was wondering, if I were to buy a large amount of land out in say, Montana, for example, likely up in the mountains, and I wanted to make it self sufficient, power-wise, I'd like to know what I'd need to do. Could a single wind turbine power the average American home? If it helps, I would ideally have solar panels too. I tried googling this, but none of the results I find give me a time frame for power output. I am well aware that this would be a great expense, and that's not currently what I'm worried about. Thanks. tl;dr How many windturbines/solarpanels would I need to become completely self-reliant for energy?
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Does Sky-watcher SK1309EQ2 telescope is good for a beginner?
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What is an effective way of removing fluoride from the water? Ever since I started drinking more water I've been experiencing nightmares and overall numbness with the inability to move in my body.

noko

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Given two lightbulbs of equal wattage and different lumen output, will the lower-lumen bulb radiate more heat?
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I remember like, a year ago, everyone on /sci/ discussing an image but I don't even understand what it was trying to depict, it was of a person in a shower drying his face with a towel with the shower running, in the file this image was repeated 4 times 2 by 2. If anyone remembers, please explain.
11 more posts in this thread. [Missing image file: 1362229945526.gif]
I think we need to stop ignoring Bohmian mechanics. It might not be a true description of nature, but I think there are still things to learn from it. I've heard much talk about experimental predictions being at odds with the theory, but these seem to contain errors. See: http://arxiv.org/pdf/quant-ph/0305131v1.pdf There's criticism of De Broglie–Bohm theory because it isn't Lorentz-invariant, but it's not a relativistic theory! There are now Lorentz-invariant updates. Lorentz-invariance might not even be a true symmetry of nature; it's missing in many attempts at quantum gravity! I don't think it's a correct view of nature, but more research needs to be done into Bohmian mechanics. There are useful applications quantum chemistry based on 'quantum trajectories'. Whether the universe is Bohmian or not, this indicates that there is something worth researching in all this. The same can be said of string theory, whose dualities have found use in condensed matter physics - it can make the maths easier by moving to a stringy picture, solving the problem, then reinterpreting the results by switching back.
5 more posts in this thread. [Missing image file: fucking stupid.jpg]
How do I figure this bullshit out? One of my classmates mentioned something about the unit circle, but that sounds wrong.






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