/sci/ - Science & Math

So what is the current state or prospect of using nuclear fusion for energy? We are really close to completing a full fusion reaction (if we haven't already), and the only obstacles seem to be economic ones. It seems like the obvious answer to solve the energy problem long term, so why isn't it being invested in or even talked about as much as wind, solar, and all that stuff? Just asking because I find the science interesting and want to know if it is a field worth going into. Thanks.

tl;dr What's the state of nuclear fusion technology? What's the future of it?

/sci/, what will the infrastructure of tomorrow look like? What scientific break through in computation are we on the verge of? Will the discovery of the Higgs become practical, or will it remain a foot note in history? Are we gonna figure out graphene?

Personally, Im hoping for a comprehensive high-speed rail network in the US. Im also curious how metropolises will handle car traffic in the future.

29/46

Sorry for posting a fairly trivial question but this was one of the assignment questions in my physics intro course and the online system marked me as wrong, am I actually wrong or was it the marking system's fault?

An elevator moves downward in a tall building at a constant speed of 3.15 m/s. Exactly 5.95 s after the top of the elevator car passes a bolt loosely attached to the wall of the elevator shaft, the bolt falls from rest.
(a) At what time does the bolt hit the top of the still-descending elevator?
4.9(t-5.95)^2 = 3.15t
Solving the equation gives me t=8.25s
(b) Estimate the highest floor from which the bolt can fall if the elevator reaches the ground floor before the bolt hits the top of the elevator. (Assume 1 floor is 3 m high.)
(8.25*3.15)/3 = 8.6625
Therefore 9 floors. (this part was a bit ambiguous, I guess it could be 8 too)

What does the field of chemistry currently study?

Were there quarks during the Planck epoch?

A motor powered completely by magnets... I'm skeptical... but You guys should see thishttp://www.youtube.com/watch?v=epLOEaoPMFU&feature=fvsr

meso2cl = methanesulfonyl chloride

>>4635991

Okay, let's see what else I've got.

Hey /sci/ so I'm an undergraduate undertaking my first year of a mathematics degree. One of my compulsory courses involve a group work project. We will need to write an 8000 word report on our topic of choice as well as present our project to the class by the end of the semester. The topic has to be related to the are of modelling real world phenomenon, using at least some mathematics. Examples include: -Why do big animals move slowly? -Are applications of game theory to the cold war convincing? -Is there a crisis in world population growth? So, do any of you have ideas as to what interesting topics related to mathematical modeling a bunch of first years with some limited knowledge in calculus and linear algebra could undertake?

oh one more things, we will only have about 8 weeks, so nothing too complicated.

pic unrelated

bumping with sci pics

>>3934727

I'll dump ya a little shit.

>>3739484
That could be right, for all I know. We haven't covered Fourier transforms yet.

>>3729999
that was pretty nice
I BET THE JEWS DID THIS
since we are on sci here is a little complementary picture

Hey /sci/ could you help me with a fairly basic physics problem? I have to derive an expression for the mass (M) of air flowing downwards per second from the rotation of helicopter blades given that;
-the blades sweep a cross sectional area (A)
-The blades give a downwards velocity (V) to a cylinder of air, density (Y) allowing the helicopter to hover
-The cylinder of air has the same cross sectional area as the blades (A)

I had a go and got M = Y(A*h), where h is the height of the cylinder. I think i've messed up though, help?

Hey /sci/ just studying for the australian high school certificate and doing binomial probability nothing too hard but I've been stuck on this question for ages any of you able to shed some light on this?
>A marksman finds that on average he hits a target 9 in 10 times and scores a bull's eye 1/5 times.
>He fires 4 rounds
>what is the probability that he hits 2 or more bull's eyes and hits the target on each round

Now I proceeded as following there are three results that we would want from this:
1: 2 bull's eyes and 2 arrows still need to hit the target: (4choose2)*(1/5)^2*(4/5)^2*(9/10)^2
2: 3 bull's eyes and one arrow still needs to hit the target: 4choose3)*(1/5)^3*(4/5)*(9/10)
3: 4 bull's eyes: (1/5)^4

Therefore the probability of hitting the target should be:
(1/5)^4+(4choose3)*(1/5)^3*(4/5)*(9/10)+(4choose2)*(1/5)^2*(4/5)^2*(9/10)^2
=2329/15625
But according to my textbook the result is:
177/1250
Where did I go wrong?

Has anyone got any more like this?
I know theres one on string theory and i've seen a few others floating about, never bothered to save them till now.

Anyone know what a good response would be? I have some ideas, but I like to be thorough.

>>3511572
Still planning on making that homemade LFTR?

Hey guys,
Would you mind explaining me the 'Multiverse theory'?
Picture unrelated.