Archived threads in /sci/ - Science & Math - 959. page

underage

>>8609949
exactly 500 liters? it's constrained optimization. you're minimizing the surface area under the constraint volume = 500 liters.

>>8609967
It says it has to take 500 liters. I don't quite get it

Your prof done goofed

>>8609844
are you sure? It's due this evening and I have no idea what to do with it. I feel like I was either supposed to be given an N or a percentage.

[math]n=1-.\overline{9}[/math]

File: plants-cancer.jpg (144KB, 640x425px) Image search: [Google]

144KB, 640x425px

They don't have an active immune system like white blood cells, but produce enzymes and chemicals to fight off infection.

They don't get full blown cancer but can grow tumors that are called burls. They're usually benign.

>>8610294

That's really cool and interesting. Thanks for sharing.

Sometimes trees seem like mythical Gods the way they turn air into strength and height, run on sunlight, and live so much longer than humans.

>>8610315
>>8609589
Trees are sessile along with having close to no enemies in the grand scale of the earth.

>>8609543
I guess, if you figure out something smart and/or revolutionary.

>>8609543
>Aerospace Engineer here

No, we can't.
Propulsion systems are extremely complex and take years of research to make them stable enough. This is because they rely on 3 difficult subjects: fluid mechanics anf thermodynamics. Plus, you also need a control system, and sensors which do not interfere too much with fluid flow.
So it is already complicated enough but there's more. The system will also need cooling. Then, a system to control vibrations.
Finally, it also needs to be within a reasonable budget.
So, no.
Now, it is totally possible that you may discover a new propulsion system ato home. However, in order for it to be used on a plane/helicopter, it takes years of research to adapt it.

>>8609543
>without years of investigation and large budgets?

you have no idea how complex our machines are

I will exclude friction since you specify nothing more about your mass.
With the second law of movement you get:
[eqn]\ddot r \left(t\right) \,=\, - \mathscr G \, \frac{M_\oplus}{r \left(t\right)^2}[/eqn]
It's a nonlinear differential equation. You can try to approximate it by taking the tangent of the term on the right and get a linear differential equation. At least that's what a non-autistic physicist would do.

It will never hit the ground if you ignore friction because it'd be in orbit.

>>8609565
Oh man, I found that question in one of my old high school physics textbooks...

>>8609211
>https://www.youtube.com/watch?v=CvWeYJg9Oxs

His theories seem sound until you apply other elementary properties of physics to it. For example, the variations of gravity and light around, say, the sun would not apply to string theory. Instead, gravity would have to be constant, which when looking at it from inverse square law would not be the case with strings. I fail to understand (and please don't let my failure to understand something undermine it) how when something spinning is required to have constant acceleration how these "ropes" of force would supply that acceleration without varying the gravity of other objects by changing from one atom to another while still simultaneously connecting two distant objects.

Then again I just had four beers so if I'm missing something please let me know.

>>8609251
..?

>>8609211
This guy is nuts.

I think it is hard to tell because the definition of a "normal mental state" is rather fuzzy. But, idk, it felt real when I was diagnosed with depression.

>>8609058
Of course it's over-diagnosed. Prescription drugs is a billion dollar industry.

If you go about it based on actual diagnoses instead of tumblr special snowflakes the number of misdiagnosed people decreases substantially, but there's still a fair amount of 'muh prescribe amphetamines to five-year-olds'. The conditions themselves are real, I've said it here before but adhd patients specifically have shown an imbalance of dopamine and noradrenaline in their brains.

>put benis in anus
>erect
>push anus in
>deerrect
>pull benis out
>use tape to fix anus in position

>>8609006

You neglected to mention the gay anal sex

>>8609019
You're right. I bought a prostate massager and stuck it up my butt a few times to masturbate. I also stick bars of soap up my ass to be able to shit more easily. Though the soap thing is more likely a product of the prolapse rather than the cause.

>>8608456
cause the guy is wild.
an animal, literally.

>>8608456
He makes the wildest burgers you'll ever eat

>>8608458
>>8608512
xD

>>8608340
yeah, the moves are well known

also, it's small enough to bruteforce

any cube is solvable within 20 moves

>>8608340
How come the corner cubes don't fall off??

That is literally the most fascinating thing to me, how they made the corner cubes rotate in both directions. That shit is magical.

>>8607980
Roach.
Nigga das nasty

>>8607980
brown recluse

>>8607984
This.

>>8607421
>I'm a musician so I spend a good deal with in-ear monitors, could this be a cause
That's absolutely the cause

>how do I stop this
Stop wearing IEMs. If you're not willing to do that, then just get used to getting your ears cleaned out regularly.

>>8607565
I thought so, my doctor said that def isn't the cause but I don't trust him, he tried to scam me once with an allergy test and he doesn't even know what note 440Hz. Anyway thanks for your help man, at least now I know the cause, passion takes sacrifices I guess.

>>8607421
mate... just use your finger to clean your ears in the shower. or use a q-tip (CAREFULLY) to clean in your ear every week or so.

how can you not clean that shit to the point where it starts coming out? it's like not wiping your ass.

>>8607290
fuck off with your clickbait shilling, nigger.

>>8607296
It's not mine and it's not clickbait. It's an extraordinary post by one of the most influential people in the world.

>>8607309
>influential
>WordPress

>>8607143
I'm poor so I use a TWISBI Eco with X-feather Noodler's ink. 7/10, pleasant experience. If I feel up for it I use a Pentel Graphgear 1000 with 0.5 lead, which is also comfy

>>8607169
use pentel pg307, 0.07 (reduce the chances the tip bends)
The twisbi eco is nice. I currently use a pilot kakuno fine nib, black blue ink

File: Pentel Smash Q1005.jpg (78KB, 1000x1000px) Image search: [Google]

78KB, 1000x1000px

Bundoki has the best pictures
I use pic related and an Twsbi Eco but I'd like to replace it with something lighter.

Unfortunately in order to understand that, you should get a more serious book about spinors and understand their connections with Clifford Algebra.
Try to take a look at the Lounesto, Terrence & Tucker, Vaz e Da Rocha.
A good reference book is Clifford Algebra and the Classical Groups by Ian Porteous, but you will find only math there.

>>8607799
well i found a book called physical applications of geometric algebra.
Found some stuff that i need there

>>8608988
>8608988
Isn't that the book written by Doran and Lasenby (the one whose cover you posted)?