/sci/ - Science & Math

Say our particle can be in only 2 states.

When we say our particle is in superposition, are we saying that it is ACTUALLY in BOTH states at the same time,
Or are we just saying that the probability of our particle to be in a particular state is 50%
(So 50% likey to be in state A and 50% likely to be in state B)
while, in reality, it is actually in one of those states, not both.

Is anyone here a physicist? What is your job like/what do you do (specifically)?

>tl;dr pls recommend the best physics textbook and video series

I'm learning physics
I'm in the last year of high school
(18 btw, pls don't ban me)

My textbook is awful
It's full of mistakes
It's explanations are awful
They use poor notation (for example, not once do they use arrows over vector symbols, and they never seem to use subscripts, and sometimes their formulas appear to have errors in printing)

I've been watching Khan Academy videos, and while they sometimes explain things very well, at other times he seems to fumble around and leave out formulas.

I tried watching the first few MIT physics lectures. While I already understood the concepts they were teaching, I found his explanations needlessly convoluted and complicated.

So, can anyone recommend the best physics video series and textbooks?

I've checked the sticky, but there are just so many options that it's hard to decide

hey,

i want to learn more about physics, and in particully quantum and particle physics.

Anybody has experience with the lectures of leonard susskind?
they are quite good listed here, because the stanford-youtube-channel is sometime difficult
http://tedyoung.me/2011/01/22/leonard-susskind-lectures/

I'm applying for my first science related job. Thing is, I'm only just finishing my 3rd semester of college, so I don't have much research experience. The reason I am applying now is because it's actually for a scholarship that will eventually turn into a job. Can anyone who's in this field give me some pointers on what employers are looking for on a science resume? Here it is in its rough first draft state

Objective
An entry level position in research and development.

Education
Bachelor of Science May 2015 Overall GPA: 4.0/4.0
Major: Physics Minors: Astronomy, Mathematics and Computer Engineering
Dean’s List for Academic Excellence every semester

Computer Skills
Languages: C++, C#, Visual C++, Visual C#, Visual Basic, HTML
Systems: Windows ‘98 - Windows 7, Mac OS X
Software: Mathematica, MATLAB, Logger Pro, Microsoft Office, Microsoft Expression Web, Microsoft Visual Studio, Blender, Unity

Additional Experience
Web Page Designer, (location)

Designed, wrote, and maintained (location)’s home page
Collaborated with faculty members to create a page that suited them all
Assistant AP Chemistry Teacher, (location) February 2011-May 2011

Taught students the last half of a college level chemistry course
Demonstrated and oversaw the students’ proper use of lab equipment
Prepared them for excellent performance on the AP Chemistry exam

Projects
Basic Ohm’s Law Simulator

Programming a basic microscopic simulation of Ohm’s Law to gain an understanding of its behavior
Technology Documentary

Cooperating with a partner in the creation of a short documentary about modern technolgy
Wrote the script through researching technologies being developed today

Activities
Programming computer simulations, writing and directing films, writing & performing music.

References available upon request.

Thanks /sci/

I'm almost half-way through my first year of undergraduate Physics. I'm definitely enjoying it, but I'm wondering whether it's better to take a specific course next year like Theoretical/Astro/Particle Physics, as opposed to straight Physics (which I'm currently doing).

By better I mean in terms of future prospects. I know it's best if I take the one I'm most interested in (imo Astro/Particle > Theoretical), but I'm asking because straight Physics seems quite broad, so it may be better if I continued with straight Physics.

Thoughts?

I'm having trouble with this question. ive gotten it wrong 3 times.
Suppose two boxes on a frictionless table are connected by a heavy cord of mass 1.0 kg. Calculate the acceleration (magnitude) of each box and the tension (magnitude) at each end of the cored, using the free-body diagrams shown in Figure 4-53. Assume FP = 42.0 N, ma = 9.0 kg, and mb = 13.5 kg, and ignore sagging of the cord. Compare your results to Example 4-12 and Figure 4-22.

i need to find:
mA acceleration in m/s2
mB acceleration in m/s 2
FTA in Newtons
FTB in Newtons

here are the images they give me:
fig 4-53
http://www.webassign.net/giancoli/4-53alt.gif
fig 4-22
http://www.webassign.net/giancoli/4-22alt.gif

Okay /sci/, I am currently a senior in a Canadian high-school. Right now i'm in a class called Advanced Functions 12, its a prerequisite to calculus/vectors 12 which I'm taking next semester.

Our last unit test was on polynomial functions, some of the easiest shit ever, finding zeros and such. I swear the math education system in the U.S. must be much farther ahead. So my question is, how far behind is the Canadian math education system?

Also, how can I person like myself get ahead and start learning harder math? The math right now is way to easy

Hey /sci/
I'm doing physics first year at high school. What is/are the best textbooks?

What math background does someone need to study
1)Elementary Physics
2) Intermediate
3) Advanced
4)Quantum n' shit

What's the formula to calculate free fall?

A ball that weights 1 kg falls from 182 meters, how long will it take until it reaches 58 meters above the ground?

I know the weight is irrelevant and acceleration is 9.82m/s^2

Could anyone help me to figure this physics problem out? The book doesn't explain it and I have no clue what formulas to use.


A train that weights 140 tons is being dragged with the consistant force of 33 kN. How long until it reaches the speed of 20 m/s

Complete the sentence.

Science is ________, and that's why _________.

hello sci!

i am taking physics test on thursday...

and its open book/ open notes!

can you post a list with all the useful formulas?

the test is on:

-kinematics
-vectors
-kinematics in two dimensions
-newton's laws
-work
-energy
-momentum

its an intro course

i would really appreciate it sci...

Here's a fun problem I need some help with for UPII.

Calculate the symbolic expression for the capacitance of an isolated conduction sphere. Use R for the radius of the sphere.

I got to

C=(Q/V)
V= - (integral from a to b) E dl


I know the answer is Csphere = 4pi)sigma not)R


Any thoughts? I know the formatting sucks but its symbolic physics...

Hello, this is my first time posting on /sci/ and I am a junior in High School. I have taken up interest with Ultra-Cold Physics / Astrophysics and I have not taken Physics in school yet. I am in a below average math class and I'm in the standard science class for my grade with an 88. I consider my self an average student overall, with my strengths being in History courses but I want to go to college for Physics but I don't I am smart enough even with hard work. What are your opinions? Thank you.

What kind of hell do you think I would have to go through to get Ph.Ds in both organic chemistry and theoretical physics?

What health/mental conditions do you have /sci/?

Hey, /sci/
I'm an 18 y/o dropout who was somewhat terrible at math, though that doesn't give it justice seeing you cant necessarily be bad at something you don't put time into, anyhow. I'm very interested into starting studying/learning theoretical physics particularly quantum theory etc. I'm very persistent in anything I do and came for suggestions on where to start, I can download online books or any research material with ease. Looking forward to a response!

Why are you at university /sci/?

- Because of the money/job/prestige you get as a result of it?

Or

- Because you enjoy learning/find the subject you are studying interesting.

If it is a mix of two, which is more dominate in your choice?

OK, I have a theory.

Let's say that in the beginning there was nothing (0), and 0=0
Then something happened and matter became real, let's take a random number for the sake of the argument and say that 479 matter appeared. And as we all know, everything in the universe has a counter-force, in this case anti-matter. As everything in the universe these to are completely opposite of each other, so now we have -479 anti matter. Now, when we add these two we get; 479+(-479)=0. This means we still have the same as we began with, 0=0. these two forces can co-exist just like magnets can stay separate, so we have something, that equals nothing.

What this means is that matter can come from nothing and spontaneously appear.
Thoughts?

I wasn't sure who to ask but figured /sci/ would be the best place to ask.

Has anyone done a comprehensive survey of 4chan? Different boards and such? I've seen a few over the time I've been here but no one has posted the results really.

Realistically what job are you aiming for?