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Can man manually trigger an Yellowstone eruption?
Would a nuke do the trick?
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actually its just like a giant pimple. we'd just need a lot of people to all push the earth and squeeze it towards the middle and itll pop
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What if a thousand people gathered around it, and all jumped at the same time?
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What if we shot a ton of ice cubes in it? Would it cool it down or would it completely annihilate the particles in it?
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I wasn't able to take any real advanced science classes in high school, now I want to go into astronomy, any tips or books I should read before going to study this at college?
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>>8447426
Math, math and more math
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>be me
>hype for astronomy class
>boring as fuck
Astronomy is a meme Anon
Anonymous
sci ways to factor 3rd degree+ polys 2016-10-31 05:38:06 Post No.8447374
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sci ways to factor 3rd degree+ polys 2016-10-31 05:38:06 Post No.8447374
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sci ways to factor 3rd degree+ polys
Anonymous
2016-10-31 05:38:06
Post No. 8447374
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gauss?
matrices?
i am a brainlet doing auxiliary equations
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>>8447374
root([a,b,c,d])
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>>8447400
In what form is the solution the nicest?
for example quadratic equation is x^2 - 2bx - c = 0 which gives x = b +- sqrt(b^2 + c)
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I'm considering converting my old truck (2001 Nissan Frontier crew cab) to electric once the motor goes out, since it wouldn't be worth buying a new engine. I'm having some issues with some of the math involved though.
I'm trying to estimate the power requirement for travelling on the highway, so I can see if commuting would be possible.
Here's the formula I've been given:
Power in Watts = ((Mass in kg) (9.8m/s2) (Velocity in m/s) (Rolling Resistance)) + ((0.6465) (Coefficient of Drag) (Area in m2) (Velocity^3))
Weight: 1908 Kilograms
Speed: 32 meters/second
Rolling resistance: 0.02 (From an example in an article explaining rolling friction coefficients)
Coefficient of drag: 0.7 (From an example in an article explaining drag coefficients)
Area: 2.935478 meters2 (1.778 meters wide, 1.651 meters high
They gave an example of a small commuter car requiring 16 kilowatts per hour for 70 miles/hour. For my truck, I came up with 55,498 kilowatts per hour for my truck.
That can't be right, but I don't know what I got wrong. According to dynamometer ratings, the engine I currently have puts out about 100 horsepower at 4000 RPM, which is what it's at on the highway. But I'm nowhere near full throttle. So something is wrong.
What'd I do wrong?
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>>8447105
>16 kilowatts per hour
Nice b8
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>>8447115
Whoops, I meant just kilowatts.
I found another example, a Ford Falcon requires 13 kilowatts for 29 meters per second.
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Post your formula with all of your information inside of it and your work. This may make it more obvious about where you're going wrong. Write it all out if you haven't yet m8
How did human skin colour change so fast, was it because of our innate intelligence allowing us to adapt to new environments or just "lol random mutations"
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>>8446838
a few alleles, most importantly tyrosinase gene variant + founder effect
explains many diversity questions
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I've heard it was due to the fact that human migration moved from Africa (a place of much direct sun radiation) to the northern hemisphere where sun radiation is not as direct. This decrease in the UV radiation exposure evolved large amounts of melanin out of the body's design because it was no longer necessary. And apparently this migration happened quickly in the course of human history
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>>8446874
>evolved melanin out of the body's design because it was not longer necessary
that's a teleological argument
there must be a real reason other than "it would be good"
the genome doesn't know any of that
i believe that some north africans who had lighter skin migrated out of africa and white skin ended up having a bigger frequency in the new offshoot due to bottleneck effect
What are sci's thoughts on this guy now that he is an adult?
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How are triple integrals real if our eyes aren't real?
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>>8446774
jadenposting is best posting
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>>8446776
For you.
it took me 2 hours of rewatching the same youtube videos over and over again to understand the concept of convolution
am i retarded?
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>>8446693
no. a lot of math, especially early on in your experience with specialized topics, is a lot of just staring at something until you internalize what it's saying and why it's true until it becomes obvious. this generally takes a bit of time, especially if the subject matter is far from what you have seen so far and had hands on experience with.
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>>8446693
Some people will call you brainlet.
In my eyes, the fact that you took the time to understand it shows intelligence.
This behavior will carrier you further than any of the "I HAVE AN IQ OF 200" type this board seems to attract.
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OP here
if I could go back in time I could teach it my past-self within 5 minutes.
Why did Godel get so weird?
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mathematicians are a bunch of subjective and autistic psychos
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They're convinced all their ideas are good which is obviously false. They don't keep their ideas to themselves when they should.
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>>8446531
Because he didn't give a fuck.
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-anything Mars related goes
- if you haven't already seen Musk's multi-planetary species plan:
>https://www.youtube.com/watch?v=H7Uyfqi_TE8
From a biological standpoint, how would humans catalyze evolution for other species; would speciation occur the moment there exists a viable, pure breeding population of a given species?
-Any microbial species with potential to grow on mars surface will most likely have iron (III) oxide reducing metabolic pathways, as the surface of mars is mostly iron (III) oxide.
>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3541049/
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>>8446471
How would rivers/oceans behave on .3G? Is terraforming even a possibility?
Why not flying cities on Venus instead of more expensive spinning cities on mars?
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>>8447489
Water deposits on the surface of mars would enable the colony to grow big.
If we cant do that then cloud cities here we come...
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Let's say I fly, just about some centimeters from the ground.
Since the earth spins, will my position change?
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>>8446425
no because rotational inertia is conserved
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yes because rotational inertia is not conserved
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you will drift around because of fluid dynamics
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What does /sci/ think about modafinil?
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>>8446166
I sometimes take Adrafinil for work and study. It metabolizes into Modafinil, and I like it because it's very mild, doesn't drain my dopamine, and doesn't give me any anxiety like Adderall sometimes does.
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Tried to order it from india (cheaper versions there) but got found by toll in eu and they did not let it through
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in my personal experience, it doesn't do shit
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Hi, I'm the guy who got a grant for a lab.
I'm getting close to a scientific breakthrough with my ceramics research. I have a patent pending right now. I think I will revolutionize superconductors forever.
Anyone else got a patent and would like to share non-normie tips? Also, discuss research in general.
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pls get a position in organometallics research ;_;
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>>8446138
>tfw can't even afford the 100$ a preliminary pattern application
Here's the deal:
-Without a degree and without money: get your credit stolen anyway
-with a degree and without money: manage to get half the credit and maybe a patent, probably can't enforce it though so don't dream about revenue
Now I have to wait until someone with money or someone without brains independently comes up with my idea and gets everything I'll never have.
I hate my life. Poverty is killing me.
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>>8446138
But ceramics aren't a good conductor.
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Anyone know of another place kind of like /sci/ but isn't dominated by high schoolers, freshmen, and self-educators?
I like the informality of it, but as junior physics major, 99% of the threads that aren't flat out shit posts are first year baby shit. One step up would be nice but something like SE is of course far too advanced.
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>>8446112
r/science
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>>8446112
How many non-shit threads have you made on /sci/?
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If pluto and neptune collided how would it go? A big explosion or just pluto disappearing into neptune's atmosphere?
Would any of the two events be able to be seen with the naked eye from earth?
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>pluto and neptune collided
how would you do that?
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>>8446018
Look at the OP pic, ya dingus.
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>>8445991
>Shoemaker-Levy 9
Probably look something like that.
I'm not exactly sure on how to word my question, but, here it goes. I'm having trouble comprehending the definition of work and the relationship it has with force and energy. Mathematically it's simple, and solving problems that involve work is straightforward, however, conceptual I'm having trouble.
If a weightlifter lifts a barbell, the work done is mgh. So why is the work done by the weightlifter equal to gravity? Doesn't the weightlifter have to provide a force greater than the force gravity provides to accelerate, hence the net work should be the net force applied to the barbell?
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>>8445736
Work is not path dependent. Doesn't matter how much energy it took to get it there, or how many left turns it took on the way.
If you want a more technical explanation, it's a line integral over a vector field.
Better explanation here:
http://math.oregonstate.edu/home/programs/undergrad/CalculusQuestStudyGuides/vcalc/lvec/lvec.html
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>>8445736
Yes he does provide a force greater than gravity to make it move but at the top of the lift he does negative work by making the barbell stop (decelerate). It works out so that work done by him is mgh.
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>>8445736
There are two types of work in this scenario which might make it easier to comprehend.
Positive work: The lifter applies a force to the weight in a direction equal to the displacement. Ie., he applies a force to the weights in the up direction and the weight moves up.
Negative work: This is the work done by gravity. Because gravity applies a force to the weight in the downward direction, this force is opposite to the direction of displacement and is therefore negative.
Mathematically though, once the weight has gone from the ground to the lifted position in the air, the only change in energy that has occurred is equal to the force times distance (mgh), so this is all we consider (Work = change in kinetic energy).