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/sci/ Science & Math

Threads added between 2014/01/22 and 2014/01/29

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Most viewed threads in this category

22 more posts in this thread. [Missing image file: electrical-computer-engin(...).jpg]
do engineering interns get drug tested?
9 more posts in this thread. [Missing image file: interface_dpp.png]
I need a 820 ohm resistor and a 470 ohm resistor. I currently have 10 100ohm resistors and 2 1k resistors. Here is the circuit I am wanting to complete. Would it be ok to substitute the 820 ohm with 8x100ohm in series. And substitute the 470ohm resistor with 2 1k resistors in parallel? This is to write/read data to a PS2 memory card. I have completed circuits here and there in the past but have never substituted different value resistors. Thanks in advance!
4 more posts in this thread. [Missing image file: 3 problems.jpg]
Hey /sci/, just wondering what you think of the "difficulty" of the following problems ? Honestly how hard do you think the individual problem is relative to the average STEM program undergrad in the US ?
3 more posts in this thread. [Missing image file: 1366019500211.gif]
What is the relationship between the molar mass of alkanols and the molar heat of combustion. How can this trend be explained by the structure and bonding of the alkanol, and how is this significant in regards to the use of the said alkanol as fuel?

Geological Engineering

0 more posts in this thread. [Missing image file: 358px-Medieval_pig_slaughter.jpg]
Is studying geological engineering economically viable? Have any stories of somebody who took it in uni?
3 more posts in this thread. [Missing image file: 3B0pt3M.jpg]
Hey /sci/ I got a question for you. Im reading a textbook on digital design and Ive ran into a strange boolean equation that has the same output for the function and the complement. The function is W•X + Y•Z and its inverse would be W`+ X` • Y` + Z`. For the input WXYZ = 1110 they both give 1. Whats going on here?

Discussion

1 more posts in this thread. [Missing image file: 1349992079956.jpg]
Hello. I am wondering if anyone here would be up for a debate on empirisism and post rationalization. I know this is alot philosophical but also very important for science in general and without scientists this debate is not possible. I myself finished study in law and plan on starting philosophy now. I think (and also learned) that with scientists you have the highest chance of getting a good debate, because they are more likely to be open minded (atleast the brilliant ones) and mosten calm and resistent to rage (most i've met). Hope this hasn't changed. Also would be interesting if you would include your subject of study (hasnt to be on college, private studies work aswell)

Planetary say what

9 more posts in this thread. [Missing image file: image.jpg]
Planetary (and moon) pronunciation questions... How do you say it? Uranus: >yer-ah-niss >your anus Io >eye-oh >EEE-o
2 more posts in this thread. [Missing image file: 1390607032199.jpg]
>Chronic kidney disease globally resulted in 735,000 deaths in 2010 up from 400,000 deaths in 1990 -http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(12)61728-0/fulltext

riddle

7 more posts in this thread. [Missing image file: cards.jpg]
Q: You stand blindfolded in front of a table. you are told that there are 32 cards with the number up and an unknown amount of cards (so it's not sure it's 52) with the number down. Is there a possibility that you can divide the cards in two groups so that both groups have the same amount of cards with the number upwards. Note: there is a chance that the answer is no, but that would be really stupid. It's a question from my gf school for 15 to 16 year olds

Ever wondered what it's like to actually study physics?

3 more posts in this thread. [Missing image file: Apollo_15_launch.jpg]
https://www.youtube.com/watch?v=nVZuIMXsfjA
3 more posts in this thread. [Missing image file: fin.gif]
#rexolution animooted
9 more posts in this thread. [Missing image file: banglore_5_11_page_12_ima(...).jpg]
Halp, /sci/, I'm in despair and need the help of Anonses. In 6 hours I have to asses biology project, in which I have to check whether music affects one's heart beat rate. All u would have to do is to measure your pulse while sitting, and then listen to four songs of different genres (with measuring pulse after each song). Would be awesome if you verified whether you're manon or femanon. Songs: 1) http://www.youtube.com/watch?v=8Qx2lMaMsl8 2) http://www.youtube.com/watch?v=FHp2KgyQUFk 3) http://www.youtube.com/watch?v=ab9176Srb5Y 4) http://www.youtube.com/watch?v=St6ZzLMMVe4 It won't even take 20 minutes of yours, and you will make a /sci/ bro extremely happy (and let him pass this year...) Awaiting your answer, Anon P.S. I already posted this on /b/ (which I think was not the best move) but I thought that /sci/ is more suitable for this
8 more posts in this thread. [Missing image file: calc.png]
The default calculator in MATE desktop environment can calculate pretty big numbers. Pic related, I just kept multiplying the result with itself and ended up with this. It took about five minutes to compute.

Doing science

7 more posts in this thread. [Missing image file: 1390934477560.jpg]
I reckon I'm not the only one theoretical physicist wannabe planning on acquiring a job in some institute. Provide some kind of review of American/European countries in aspect of the research-job prospects. Specifically I'm interested in the QFT area. Pic hopefully unrelated.
10 more posts in this thread. [Missing image file: look_at_my_long_tongue_by(...).jpg]
Can /sci/ help me understand calculus and integrals/derivates/limits?I mean on a more intuitive way...
5 more posts in this thread. [Missing image file: 1390692245462.jpg]
What /sci/ related things do you do in your free time, if anything, that are productive or gives you useful skills? I mean stuff that you could eventually put on a CV or make money from. Literally the only thing I can think of is learning programming. >be a chemical engineer >recently gave up on the idea of starting either of the below 2 coursera courses since they won't help me on a day to day basis, or probably won't build up to anything https://www.coursera.org/course/compmethods https://www.coursera.org/course/functionalanalysis Is the below course practical? https://www.coursera.org/course/algs4partI

Global warming

73 more posts in this thread. [Missing image file: image.jpg]
How do I explain global warming to people? A bunch of idiots I know think that a cold front disprooves climate change, and I want to know how to explain to them how that's not how it works.
12 more posts in this thread. [Missing image file: PPF-GunsButter2.png]
Hye guys, quick question. I got into a bit of an argument with my economics professor and I'm looking to get some proof for my point. His statement was that on a PPF model, any point to the left of the curve is considered inefficient, but this does not include the axis. I said that it does, because if you produce 30 million computers in a given year and you have the capability to produce 40 million, you are producing inefficiently. He said I was incorrect because that point would be a point on the curve of a different year, but we were only discussing a single year beforehand. The reason I'm here is because I'd like to have an equation or inequality that shows that the point on the axis (30m) would still be a valid solution (IE would be considered "inside" the curve.) But I'm not sure how to represent this kind of line on a graph. Could one of you show me an inequality that would fit the kind of graph pictured? I thought of x^2+y^2 < 40,000,000 but I need it to be limited to the first quadrant, which I am unsure how to represent mathematically.
33 more posts in this thread. [Missing image file: root of 4.jpg]
1/9998 = 0.0001 0002 0004 0008 0016 0032 0064 0128 0256 0512 1024 2048 4096 … WTF? Why???






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