/sci/ - Science & Math

>>6191977

>space shuttle

>>6068000

>>6043172
hahahahahahahahahaah step 2 looks like this face ahahahahaahahahahahahahaha

>>5881651

>How do binary systems work
>hurf durf

https://en.wikipedia.org/wiki/Double_planet

>>5847988
this

>wait wut
>work out simple example
>mfw

>>5739758
>>5739709

Been seeing a concerning upsurge of schizophrenics on /sci/ lately.

>b x b = a
>odd x odd = even

>>5690375
>>tfw when sine of theta equals 0, you get the radius of the circle

>when sine of theta equals 0
>when sin(theta) = 0
>you get the radius of the circle

>the radius of the circle
>0
mfw

>>5690311
should be the inverse of said relation.

So if Jellyfish and lobsters are immortal, why dont we study them more?

>>5529958

Google:
Rational Roots Theorem.

x^4 - 3x^2 +2
But, in this case, you can make a substitution.
x^4 - 3x^2 +2
w = x^2.
(x^2)^2 - 3(x^2) + 2

w^2 - 3w + 2 = 0
Solve with the quadratic formula.
Then when you end up with your 2 w's, sub that back into (w=x^2) to get the 4 x solutions.

There should be at least 1 real solution per degree of the highest polynomial (In this case:4)

>>5247374
>>5247375

Trig substitution.
Look this shit up bro, this isn't Google.

A friend of mine posed the question <div class="math">\frac{\mathrm{d} }{\mathrm{d} x} \left ( \frac{x}{y}\right ) </div>

Solve it with implicit differentiation..

I get <div class="math"> y' = \frac{y}{x} </div>

Is this right?
Here's my working:
d/dx (x)(y^-1) = ((x)(y')(-y^-2) + ((1)(y^-1))

(y')(x)(-y^-2) = (-y^-1)
(y')(x)(y^-2) = (y^-1)
(y')(x) = y
y' = y/x

**cbf LaTeXing that shit..

>>5157244
Remember, a square is considered a rectangle.

>>5136471

They are some ugly looking questions.

You will need to know implicit differentiation for all of them (power and chain rules will help also)

Check out Khan Academy to get a rough idea on what to do, and if all else fails use Wolfram Alpha, get the answers hand it in, then learn the material (If you get examined and cannot perform what you did in assignments, marks can be rescinded).

>>5130917

>reconnaissance aircraft

>not using a satellite

>>4825326
seems legit

>>4557181
No I mean, if somebody from a non-English country gets a degree in English, can he pursue a career in English-speaking countries?

Studying for Chemistry finals.

150g C12H22O11 (sugar) to gCO2 using stoichiometry

I keep getting 1800g CO2 by way of:

150g * (12mol C/ 1mol sugar) * (1mol CO2/ 1mol C) = 1800g CO2

This seems way wrong.

Help?

Pic related: mfw

>>4468406
Yes, you can get a Ph.D in psychology, but you won't become a Medicinal Doctor this way. A person with a doctorate in psychology is as useless as a person with liberal arts major.

Hey \sci\, I was wondering for the sake of argument:
How fast does water come out of water jet cutters?

The strongest jets on the market (according to wikipedia) are 100,000psi and 689MPa. I'm not sure what MPa is either. Also, I'm looking for this in meters per second.

Pic related mfw someone said that a stream of blood traveling 980m/s would just "splash" into metal. Pretty sure that it would damage the metal, but I could just be way underestimating the speed of the water jet streams.

>>3928669
I'm not even going to answer this....a circle jerk started because OP decided to use a badly pun-saturated picture.

OP, I can't really say for sure. I can only speculate that when the Big Bang happened, there needed to be some point (Imma use the Planck scale) at which physics decided to make certain things a constant.

It's like a building foundation. Once that is in place, all the other dynamic elements can be built around it.

Even if those dynamic elements were to go to shit, the foundation would still be in place.

For instance, electro-static repulsion/attraction is one of these foundations, and everything else just falls in line according to it, much like a slippery waterslide deciding where you should be going, not the other way around.

Elon Musk is going to die in a car accident or something. That's the only thing that can complete this series of retarded events.

I'm sure that many of the fine, scientifically minded individuals here are at least somewhat interested in science fiction. So let's talk about what is often considered (along with FTL) to be the main divider between hard and soft sci-fi: There are plenty of other variables, but all things being equal, time travel is the quickest way to make your series seem soft.

My question is that, given what we know about the universe, are there any potential- even if entirely unattainable by anything close to modern technology- time travel explanations such as these that might be possible?

I mean, if you had a galactic empire spanning millions of years and thousands of stars that could perform absolutely anything that was within the limits of any natural capability, could you send a man back in time?

And if so, how could you do it?

>>3451763
ELABORATE, YOU VILE FIEND