/sci/ - Science & Math

>>11237276

>>11123877
SUVAT

>>10988495
>this
>Freshman physics
>Interesting problem
You have to be 18 to post here

>>10587338
>"The center of mass of an object is the main gravitational factor of the object. We take the distance between the two centers of the objects and call that distance r. The gravitational attraction is the same for both objects and it is relative to their respective masses. Force = mass of object 1 times mass of object 2, the force is then divided by the distance from object 1 to object 2 times the distance from object 2 to object 1. The units are corrected with G"
That's a horrible way of explaining it

>>10503534
>And two postulates the theory is based are 1) c is the limit and no mass can reach it 2) there is no absolute frame of reference.
That's not the first postulate, if you read that from somewhere else they were wrong. They are that:
1) The speed of light is an invariant that all constant speed observers measure to be the same value, c
2) No absolute frame of reference (trapped in a windowless box there's no experiment that can tell you if you and the box are moving at constant speed)

These together give the predictions of special relativity such as time dilation/length contraction and massive particles never moving at c. The light clock thought experiment is a good way of getting these predictions: a light clock ticks slower when moving because of the first postulate, but for the second postulate to stay true then ther emust be time dilation and all clocks must slow down (else you could tell the box is moving by your light clock slowing down and your mechanical watch staying the same).

>>10503696
It's more just a fact of the geometry of spacetime that limits the behavior of everything that lives in that geometry. Some modified theories of gravity (non GR) have this feature of the geometry variable and so predict universe with a variable speed of light.

>>10503748
I wouldn't wholly back this argument since its a bit specific about why light travels at c, but the speed limit isn't exclusive to light, any massless particle necessarily travels at c

My clown world university does a 5 year engineering masters program where you enter into it out of highschool and you pick a second undergraduate major.

I'm currently in my ultimate year of MEng in Mechanical Engineering and my second major was in Economics.

Big mistake, the economics program is a joke. It's just the material of 3 textbooks spread out over 3 years. I should have done maths or compsci.
But I guess I am lucky to be able to teach those topics to myself, I'm certainly reaching a much deeper level of understanding and integrating the knowledge into myself this way.

>>10343726
The maths used in numerical modeling.
>Gauss quadrature
>Runge-Kutta
>pic related
Something more advanced could be going into FEA or CFD, but you definitely don't have the time for a thorough explanation.

>>10217757
just become an engineer lel

45/?

Summer
>Real Analysis
>Computer Aided Design

2018 Semester 1
>Finite Element Methods
>Dynamics, Vibration and Sound
>Graduate Engineering Thermodynamics

Not the most exciting semesters, maybe thermo will surprise me.

I am 1/4 way through my masters.
I am getting scared it is ending too soon.
One way of stalling is to do an honors for my undergraduate.
It would give me an addition dissertation+4 more elective units from my specialization.
It would take an extra year of my time (good/neutral)
and cost my $6000 (kind of bad).

Should I do it, I don't think I wan to go into the real world yet.

>Thread for discussing how us southerners will spend the coming summer.

I failed to get an internship. I only managed to get one interview and then they turned me down.
So now I have 13 weeks to do whatever I want.

I kind of feel like spending it studying because there are things I want to learn that are either outside of the scope of my degree, or that aren't included in my degree because the uni messed up.

>The uni reformed all the BEng into BSc in Engineering Science
>I am part of the first cohort to go through
>They accidentally removed the Heat & Mass Transfer unit from the mech eng specialisation
So I'll probably work through one of the books on that from the sci wikia.

CAD isn't taught by my uni, they expect students to teach themselves, which is fair enough.
So now I will fulfill their expectations. Also, I will be doing this in order to improve my employability. In addition, it will be important to learn now because I will have a finite element methods unit next year.
I'll probably start by working my way through the official solidworks tutorials.

I also want to learn some real programming instead of just matlab/mathematica/excel.
I'll try to pick up C++ using the 2 books highly recommended books from sci wikia.

I did an applied mathematics unit this semester, I want to continue my learning on the topic using:
>Chaos. An Introduction to Dynamical Systems. - Alligood et al.
>Nonlinear Dynamics and Chaos: With Applications to Physics, Biology, Chemistry, and Engineering - Strogatz

I know for certain this is too much.
Even though this is only about 80% of a usual semester load, without the pressure of getting good grades I will almost certainly slack off.

If I try to do all 4 at the same time I will definitely do nothing.
If I attempt it differently and try to do a single one full time for 3 weeks, it sounds a little bit better. But it still sounds completely impossible for me.

I think I should probably try to do less.
What should I do lads?

>>9047191

No te dejes comer, dormir, o descansar hasta que has completado o comprendido la meta que te pusiste para el día. Un habito que yo me hago es escríbirtelo en la mano con pluma permanente.

Cuando estudies, esconde el pinche teléfono. Ponlo lo mas lejos de ti que puedas, solo prende el timbre para contactos muy importantes.

Lee cada capitulo antes de que se presente en clase, como dijo >>9047325
Nunca entres a la clase sin idea de lo que va a ser o para aprenderlo por primera vez, sino preparado con conceptos básicos y preguntas. Si no estas perdido en la novedad de terminos y notación, es más fácil pensar sobre le que sí importa.

Perdona my español infantil, buena suerte

>>9037076

This seems to be the generic advice but it looks like it just hasn't worked out for a lot of people.

The "work hard and get a gr8 job straight out of college to pay off debts" narrative seems to be a meme at best, even for STEM majors. The real results look like chronic underemployment. The kikes have got us by the balls

>>8866543
WRONG
Jewish disinformation is a /pol/ agency

>>8697401
It stops being a funny joke and starts being a fact if they're not in reverse order.

See how this is funny bc of how ridiculously false it is