Applications Definition and 662 Threads

Would someone care to explain some basic applications of Partial Derivation in real-world situations? (Note: This is NOT a homework question; it's just a query.)

I would like to know what are the prequisites for a graduate course with a handle "supergeometry and applications in physics", Iv'e read somewhere that it uses a lot of algebraic geometry, schemes, I guess that after the lecturer will publish the syllabus with the prequisites, I'll be wiser...

Hello, I am looking at companies for my second year internship as a CompSci undergraduate, specifically I am thinking of Artificial Intelligence/Data Mining/Natural Langauge Processing. I would be grateful for any tips on commercial companies that carry out some work in this field, as it...

In the following diagram: http://www.st-andrews.ac.uk/~www_pa/Scots_Guide/experiment/lab/expt2/rc.gif; I believe it is a Low-pass filter. But within the picture, does current come in from both-top/bottom left portion of the wires, and exit the top/bottom right portion of the wires? In another...

Homework Statement A ball of mass 1 kg is acted upon by three forces: Fl = (2i + 4j - 3k) N, F2 = (-3i - j + 2k) Nand F3 = (i - 5j - k) N. Determine a vector expression for the acceleration of the particle. If, at time t = 0, it has position r = (i +j) m and velocity u = (i +3j)m/s...

One application I can think of is that if I had an incurable disease I could go on a one week ride in a spaceship, on return 50 years have passed on earth. Of course if there wasn't a cure I could just go on another trip.

Hello, I'm trying to start my first job/career and I don't have much professionalism experiences. I'm wondering if sending job applications on a Saturday and/or Sunday will be acceptable or I should delay sending applications till Monday as a better option. Thank you for your help.

Statement: Capacitors can be used to store energy or to filter signals. Some examples include filtering out AC [used to reduce the "ripple" of a DC power supply] or filtering out a DC. In filtering out a DC, only time-varying signal will pass through a capacitor. The circuit on either side...

Statement Capacitors can be used to store energy or to filter signals. Example, filtering out AC is used to reduce the "ripple" of a DC power supply. Also Filtering out DC: Only time-varying signal will pass through a capacitor. The circuit on either side of the capacitor can be at different...

Hey, I'm searching for a job in the environmental field these days. I have started my search recently and don't have much experience about professional norms in the work place -- I'm trying to get my first job after college. I'm wondering if I complete my job application 10 days or two weeks...

Hello everybody... i want a book that talks about some clever applications and problems in the fundamentals of physics >> >> also i want a book that take the famous concepts of physics and prove it or justify it clearly with pictures , mathematical proofs, clever...

Homework Statement following from this post; https://www.physicsforums.com/showthread.php?t=312075", I would like to know why people generally think the Differential Eigenvalue Problem is interesting? eg why is there a fair amount of current research into this? Homework Equations...

hey I am 16, grade 12 in australia, struggling on the hardest question on the current maths assignment. i was wondering if someone could point me in the right direction? i really have no idea where to start. and no one i seem to ask has any useful info. Homework Statement...

Hello! I'm new to the forum and quite interested in the wealth of information and exchanges that seem to go on here. I found my way here a couple of times before looking for some information on other experiments, but was too lazy to register, lol. At any rate my query is related to the...

What are linear inequalities actually used for?

What are some applications of abstarct algebra? I have to write a paper and present on a application of abstract algebra and am looking for topic ideas.

If we can describe the quantum state through Schrödinger equation, we can calculate the observables of the hydrogen atom. Can we do this for other elements, like U238? Or does this have to do with quantum many body problem. I looked up analytical solutions for schrodingers equation and it is...

Hi, What exactly is the importance of the Mandelbrot set in general? From what I've read, it seems more of a mathematical play thing than anything else.. there must be more to it than the disturbing pictures, no? Also, is there an easily understandable proof anywhere showing that the...

Hi, I just finished up a Complex Analysis course last term and, though I'm no physics major, I thought Quantum Physics looked interesting. Does anyone know some common or interesting applications of Complex Analysis within Quantum Physics? Or even an online resource that might delve into...

Hi all, I've applied to about 10 Physics internship programs (8 REU's, DoE's SULI, and NASA's USRP), and I haven't heard from any of them yet. Has anyone heard from any yet/ does anyone know when the letters go out?

Homework Statement A research studied the commercial fishing situation in a certain fishing zone. Denoting the total catch of corel fish in that zone in t years time from January 1, 1992 by N(t) (in thousand tonnes), he obtained the following data: t=2, N(t)=55 t=4, N(t)=98 The...

Homework Statement A vehicle tunnel company wants to raise the tunnel fees. An expert predicts that after the increase in the tunnel fees, the number of vehicles passing through the tunnel each day will drop drastically in the first week and on the t-th day after the first week, the number...

This is a question that got me thinking, but no further! Hence why I ask it here: Does anyone know of any mathematics that DOESN'T have practical applications? By practical I mean physical, real world applications.

Hello, I'm a Mechanical Engineering grad student (got my B.S. in ME as well) and I've started applying for jobs. I've heard that it's a good idea to call the company after sending them a job application but I just can't think of what I'm suppose to say. Do any engineers in the workforce has...

I worked full-time (upto 47hrs/week) while completing my undergraduate degree in Physics (basically to support myself). On the negative side, I've had to forgo any research experience while focusing all my effort to keep up with my full course load. On the positive side, I have no student...

Hey guys, I was wondering about what a graph would look like where the power to a did not increase at a linear rate i.e a^(x^x) Is there such a recognised function as this? If so does it have any practical applications and what does the graph look like? Thanks, Oscar

Text: Fundamentals of Complex Analysis With Applications to Engineering and Science by E.B. Saff and A.D. Snider I only ordered my textbook last week (yeah... I know), so I don't think it will get to me before my homework is due. Would some kind soul with this book please post these questions...

The Fibonacci numbers seem intimately connected with geometry. Prime numbers appear to avoid geometrics, however. Can you give some counterexamples of this latter statement?

Can anyone please provide me 3 examples where complex numbers are used in kinematics.

So, i want to go to grad school for math. i just got accepted into a math honor society. Will this look really good for grad school?

Hello, If you remember, I'm stuck between majoring in physics or chemistry. I've been reading a bit on the different disciplines in both chemistry and physics and I'm leaning a bit towards chemistry now. The one thing that really gets to me in chemistry is how applicable it is - you can learn...

Einstein's theory of relativity (special and general) changed dramatically physics at his time, and is still has not lost ground. But concerning it's practical sides, what are it's applications, or consequenses in today's "everyday life"? Of those I have found, fission and fusion (I...

Hello, I am stuck with two complex variable questions. Among others, I can't find residues when I have the poles, and these two questions are getting me out of hope. Maybe one of the geniuses on this site knows how to drive those 2 problems to an answer: 1) Computing the following...

Homework Statement This is a discussion question from an online course I'm taking. 1. Find an example from engineering which involves a second order derivative. This 2nd order derivative should have some name. For example, the 2nd derivative of displacement with respect to time is called...

Homework Statement the integral from negative infinity to positive infinity: z^4/(1 + z^8)dz Homework Equations The residue theorem: <http://en.wikipedia.org/wiki/Residue_theorem>. The Attempt at a Solution I found the 8th roots of z^8 = -1, which are e^(πiz), where z =1/8, 3/8...

1. to prepare short project report on the physics of one of the following Sport Space science physics of biological systems 2.needs to be 1000-1500 words 3. I have no clue how to start it!

Hi, I have a little problem. I recently got the nerve to try and teach myself all of the physical properties necessary to program a physics engine (the insomnia is a DIFFERENT problem). It's going much better than I could've hoped (considering I started a few days ago). My knowledge of physics...

Homework Statement A hockey puck of mass m is attached to a string that passes through a hole in the center of a table. The Hockey Puck moves in a circle or radius r. Tied to the other end of the string, and hanging vertically beneath the table is Mass M.. Assuming the table top is perfectly...

Homework Statement In coming to a stop the acceleration of a car is given as a= -4t. If it is traveling at 32m/s when the brakes are applied, how far does is travel while stopping? The Attempt at a Solution 1.) Integrate acceleration to find velocity as a function of time v=...

I didn't know if i should put this under physics or biology but what are some appelacations of Bio physics and what exactally is it?

Homework Statement A magnet is suspended so that it is free to swing above a coil that is connected to a power supply. A pointer has been attached to the magnet so that a small swing of the magnet will result in a large deflection of the pointer. When there is no current through the coil, the...

An elevator cable pulls an elevator up with a force of (g+a)*m for t seconds where m is the mass of the elevator, accelerating it upwards. Then, for t seconds (just as many as the first time interval), it applies an upward force of (g-a)*m, decelerating it to a stop (the net force here is...

I'm having trouble with a few homework problems, so here are the problems and my thoughts. Homework Statement Use the power series to evaluate the function f(x)= \frac{1}{\sqrt{1+x^4}}-cos(x^2) at x=0.01. Use the first two terms in the series to approximate the function, but estimate the...

1. A toboggan slides down a hill and has a constant velocity. The angle of the hill is 8.00 with respect to the horizontal. What is the coefficient of kinetic friction between the surface of the hill and the toboggan 2. Static Frictional Force, FsMax=msFn 3. I have no freaking...

I want to get some good Math/Physics apps for windows. anyone know any?

Hey PF, I just had a question for anyone who has been through the aerospace application process. I am intending to probably go for masters in aerospace, but in the application, what looks better, to select MS or PhD for the program I want to apply for? That is, is it better to look ambitious...

I am currently a college student who just started taking my first number theory course this week, and with all the stuff I am learning my only question is... are there practical applications to number theory? I mean there are many theories in physics yet many of those have been put to...

Homework Statement If \frac{(cos x)^{4}}{(cos y)^{2}}+\frac{(sin x)^{4}}{(sin y)^{2}}=1 prove that \frac{(cos y)^{4}}{(cos x)^{2}}+\frac{(sin y)^{4}}{(sin x)^{2}}=1 The Attempt at a Solution (cos x)^{4} (sin y)^{2}+(sin x)^{4} (cos y)^{2}=(sin y)^{2}-(sin y)^{4} On...

Two objects lie motionless in an isolated frame. One object accelerates to a speed v, then then holds that speed for an amount of time t. This causes the accelerated object to travel a time t_s into the still motionless object's future. v=\frac{c\sqrt{t_s^2+2t_st}}{(t_s+t)} If you're...

Benefit of a "Vortex Generator" in a turbocharged automotive applications As the title states, What is, if any, benefit of creating a vortex in the air flow prior to it entering the turbocharger. Here is a photo of the "Vortex Generator" in question...