Archived threads in /sci/ - Science & Math - 397. page
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would you feel the acceleration in space? how would you measure your momentum since there's no gravity?
>>7807686
So many things are wrong with this question, I can only assume you're trolling.
> no gravity
if theres nothing pulling you, then you wouldn't have any momentum you dumb fucking frogposter
>solar system has 2 suns
We have 1 sun and 1 binary companion, a brown dwarf and 12 planets (incl. Pluto).
Star systems: 75% binary, 22% ternary, 3% single, very few 4&more.
>>7807433
>and 1 binary companion, a brown dwarf
What. Since when?
>>7807443
How old are you, 12? You just learned a "ground-breaking" fact at school and want to show off to your internet friends? Bet you didn't know that soil comprises mostly of bones of people who dies 70 years ago or earlier either.
I'm sure this is easy for the most of you, but i'd just like to know how i get from the first step to the other. Thanks in advance!
Format might be weird, but I'll try my best.
As a rule with limits, you can extract constants. So (x^2)/(-x * ln(3)) has the constant [-ln(3)] in the denominator
Rewrite it as (x^2)/(x) * (-1)/(ln(3))
And extract the constant to the front of the limit, and simplify the limit to x {x =\= 0} and viola.
You are left with the second step
Hope this helped.
>>7807305
Cancel out the x and pull out the constant.
>>7807305
It's just a property of limits [eqn] \lim_{ x \to a } c f(x) = c \lim_{x \to a} f(x) [/eqn] Which if you think about it makes a lot of sense. So in this problem [eqn] \lim_{x \to 0^{+}} - \frac { x^2 } { x \ln (3) } = - \frac { 1 }{ \ln(3) } \lim_{x \to 0^{+}} x [/eqn] Where the last equality is just the application of the above property and cancellation of x.
I've watched 8.02x videos, tried reading from book, but still couldn't understand the difference between voltage and emf. I am stuck and helpless. Help me, kind people.
I understood electric field, potential, capacitance, and dielectrics very well but when circuits came they confused me. Could anyone please guide me?
Pic unrelated.
emf is open loop voltage
>>7807347
You mean emf is the potential difference between the terimals of a battery not connected to anything?
Also, how does a potential differnce exists across the terminals?
>>7807364
yes
charge separation, result of chemical reaction
Well /sci/ I think it's time we talk about the near future of energy. Is CCS worth putting effort into or is it just another scientific brag from the fossile fuels department. Discuss and be friendly.
Pic not related.
>>7806679
What type of a retarded faggot thought it would make this picture funnier to add a 4chan post saying ">that pic"?
>>7806679
What ever it is we are talking about, is likely patented or banned. So it's not going to happen.
I read an article on this. So they did a study and determined all of the geoengineering schemes proposed to deal with global warming would be hideously expensive and be totally worthless or would actually make the climate worse. Like irrigating the deserts to create forests on them to sequester carbon could cause the oceans to die and other areas of the world to turn to desert, because there is no more dust being blown off the desert and into the oceans for micro-nutrients and air to form raindrops.
The conclusion was only halting carbon emissions entirely would avert...
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Any astronomyfags around? I've been thinking about getting more serious with the hobby and buying a telescope (currently I own a pair of 12x70 binos, they're cool and all, but anything smaller/dimmer than M42 looks pretty meh to be honest). My main focus is nebulas and clusters.
I was thinking about buying an 8" newtonian (Sky-watcher, it's chinese shit, but there is nothing better where I live and I'm on a pretty tight budget) complete with a 15mm ploessl eyepiece and a UHC-S filter. Is that a fine choice? Please advise.
>>7804308
Many of the online astronomy magazines have extensive lists of telescopes for beginners rated for quality, cost and level of interest.
>>7804308
I don't know man what kind of advise are you looking for? Anything less than 8inch would be bad for deep sky objects, so I guess you've got that covered. I would recommend 10inch for fainter deep sky objects. As for those Chinese telescopes I've got no idea if they're good or not, but going from experience with Chinese product's they are most likely supar.
Determine the base of the number, explain me the process ;_;!!!!!
x2 − 11x + 22 = 0
x=3 x=6
>>7807896
There are literally thousands of primary school tutors out there, anon. Out of every place, you chose here, and worst of all didn't even read the rules.
>>7807896
Base 8.
You can confirm by plugging 3 into the equation. You will get -2. So obviously, your base is 2 off to the left. I was of course, doing it in base 10 so 2 to the left of 10 is 8.
However, I never did a problem like this so to not end up like an idiot, I did confirm it using my calculator that can calculate in different bases.
base 8
Blue Origin makes historic second landing using the same rocket. The New Shepard rocket was the same one used in Blue Origin's first powered landing flight in November, the single stage rocket lifted from its West Texas launch site, flew straight up to an altitude of 333,582 ft (101.7 km), which is past the Karman line that designates the official beginning of space, then descended for an autonomous powered landing.
https://www.youtube.com/watch?feature=player_embedded&v=74tyedGkoUc
>>7807805
Guys, this is sooo... whoaaah!! Spaayyce motherfucker!!
I can't decide guys
Pls help
should I name my son Elon or Jeff??
Dude, this is days old. You're not spreading the news. Of course we've already had at least one thread.
If you want to have a thread about it, first check the archive to see if there is one, then say something more than copy-pasting the basic story.
For instance, here's a thread that's already going, which you could have bumped, and which starts in a more interesting way than quoting the news:
>>7807017
can sum1 plz explain super springfield theory 2 me
>>7807834
? xD
>>7807788
>super springfield theory
It is possible to compress images using singular value decomposition and leaving out the smaller values. You will get "squares" as artifacts.
Is something similar possible for a dataset of voxels?
Yes, you will get "cubes" as artifacts.
>>7807599
Ok. But how are they defined? How are they called? How can they be calculated?
Ok. Found the Tucker Decomposition.
Hey /sci/ i got this cheap ass digital microscope.
What can I do with it?
>>7807394
Look at your own cum like that Dutch guy who invented microscopes did
>>7807406
I dont feel like conjuring cum, maybe later
Check out toothpaste. You should see brownian motion: crystals reflecting light are moved by jiggling particles.
Is game theory le science?
>>7806794
I read this introduction to game theory and it sounds pretty scientific.
>>7806794
The best option is bottom left
>>7806796
Why do they call themselves artists, then?
Which one of these courses should I pick /sci/
>Algorithms and Data Structures (in Java)
>Mechanics and Relativity
>>7806400
switch to a cultural studies major
>>7806400
Do you even need to ask? (Analytical) Mechanics and Relativity.
If you want to learn other one then just read "Data Structures and Algorithms in C++" by Drozdek on your own.
>>7806400
I don't get it. 2nd or 3rd year comsci course vs. literally the first physics class in the introductory sequence? What are you studying?
How far can one go in stem with an IQ of 109?
>>7806185
only to the land of hidden threads, no farther
>>7806185
My IQ is 112 and I washed out of a STEM college plot and now I weld or cut metal plates for a living. I make 76k a year.
I read somewhere (I think in the book Outliers) that for a bachelors the minimum is 100 and for a PhD the minimum is 110
Redpill me on exotic spheres.
Intuitively, why do they first appear in dimension seven? Why is such a discrepancy between topological and differentiable manifolds even possible at all?
I'm sure some of you high IQ folks can visualize 7 dimensions.
>>7805646
Oh boy I sure love going to my gym to get taller
>>7805757
>le pretend to not understand sarcasm man
he's baiting hard lads
>>7805646
>visualize 7 dimensions.
Are you implyign that we are so retarded that we will devote time and energy into pointlessly trying to 'mentally render' 7 dimensions?
No, that's for stupid people like you.
We have math for that.
{0,0,0,0,0,0,0) Oh look at that. It's the zero row vector in 7 real dimensions. SPOOKY. CAN ANYONE VISUALIZE FOR ME? OH GOD SPOOOOKSSSZZZZ
