Applications Definition and 627 Threads

Hello Everyone, I'm brand new to the forum as a poster, although I have been quietly reading the very interesting discussions going on here for a while! I'm hoping to slowly emerge from the shadows and start posting myself. Whilst I am by no means an expert in Physics, I do love the subject...

Homework Statement A meteor of mass .25 kg is falling vertically through Earth's atmosphere with an acceleration of 9.2 m/s. In addition to gravity, a vertical retarding force (due to the frictional drag of the atmosphere) acts on the meteor. What is the magnitude of this retarding force...

Are there any real life applications of the rank of a matrix? It need to have a real impact which motivates students why they should learn about rank.

Are there any real life applications of the rank of a matrix? It need to have a real impact which motivates students why they should learn about rank.

if f(x) is twice differentiable function such that f(a)=0; f(b)=2; f(c)=-1; f(d)=2; f(e)=0, where a<b<c<d<e; then minimum number of zeroes of g(x) = (f'(x))2+f''(x)f(x) in the interval [a,e] is ... All I can figure out is that at the least, it is a 4-degree polynomial with roots a, (b,c) (a...

While reading organic chemistry, the textbook said that resonance is something which is found everywhere in chemistry. It applies everywhere in chemistry and so on. However so far the only application I've found of resonance is that the more resonance structures a certain molecule has, the more...

Hi guys, I am new to the forum. I have done a bit of reading on functional analysis lately.So I was wondering whether Functional Analysis can be related to physics in any way and what are the applications of that in physics?

So I just completed the graduation requirements for a degree in Biochemistry and Molecular Biology and will be receiving my Bachelor of Science in August. I started looking for jobs about a month ago. I sent about 150 applications, but only got 3 declines and 1 interview; didn't get the job...

So I'm starting to learn how to program and I just learned how these operators work (difference between pre and post, etc.). However, I have a question, what real application can these operators have in actual software development? I mean, if for instance I have a variable with an X value...

Homework Statement The Attempt at a Solution I don't understand where that 2 comes from in the denominator in cos nπ/2

Hey everyone, I'm currently taking a mathematics course in set theory at my university as a general elective. I was wondering does set theory have any practical applications in engineering?

What use is the inverse matrix? I would not use it to solve linear systems but there must be some concrete or real life applications where it is used.

Homework Statement A lamina occupies the region inside the circle x2+y2=2y but outside the circle x2+y2=1. Find the center of mass if the density at any point is inversely proportional to its distance from the origin. Here is the solution...

Hey everybody, I have to give a talk in our seminar on invariant theory of Lie Groups. And I'm now looking for easy applications of invariant theory to quantum physics. I want to present them to motivate the discussion. I would be lucky if someone of you has an idea where I can found...

So my high school has 2 math courses functions and functions and applications. What's the difference and which is better off for me to take. I want to take calculus in grade 12 and it has a requirement of functions. Will functions and applications count for this. Help is much apeciated Also...

1. A 1000 L tank is draining such that the volume V of water remaining in the tank after t minutes is v=1000(1-t/60)2. Find the rate at which the water is flowing out of the tank after 10 min. Calculate dV/dt using chain rule u = 1 - t/60: u = 1 - t/60 ==> du/dt = -1/60 V = 1000u^2 ==> dV/du =...

I am reading Etgen's Calculus: One and Several Variables section on Green's theorem. I was wondering if there is any direct application of this concept to physics or is it only used to calculate areas?

I want buy a book to learn RF circuit design(I have got a project to do next year and I wanted to start preliminary preparation now). Could anyone help me to figure out which one is better of the two - Engineering Electromagnetics by Hayt or Electromagnetics with Applications by Kraus. Thanks

Homework Statement find the area between the curves f(x)=x^3+4 and g(x)=x^2-4x-2 ok so i am really stuck here my teacher has just given me this question for homework and i have no idea how to do it. I usually don't struggle with maths and seeing as i am with this, i am stressing out...

Hi, for a presentation I am requested to give some examples of the Real world applications of Parametric Differentiation. Now i know its to do with a differentiation of 3 variables that are connected, but for the love of god i cannot think of any examples of its practical uses. any help...

A sector of a circle, let's say AOB with circle centre O and radius 5cm has a chord subtended from A to B. This chord forms a triangle with centre 0. Angle 0 isθradians, and the area of triangle A0B is 8cm2. Given that angle AOB is obtuse, findθ. I worked out Sin-1(0.64)= 0.694, but this is...

Hello! I've been tackling the question 'Express sin3x+sinx as a product and hence solve 1/2(sin3x+sinx)=sin2x ; x∈R' but I'm stumped - I'm not sure whether I've even approached it correctly. This is what I did: sin(3x+x)=sin3x.cosx+sinx.cos3x inserting this into the second equation...

I read in my metric spaces book that a separable space is that which has a countable, dense subset. This definition has no intuitive meaning to me. I'm able to show if a space is dense or not, and I think I can show a space is countable. But, I'm missing the "so what?!" I would like to...

I understand the importance of letters of recommendation for grad school applications. My question is: ideally, how much should my recommender know about me? I ask this because I study in a top, big research school in which the interaction between the undergrad researcher and the PI is very...

Hello, I'm a physics undergrad who knows a little bit about topology (some point set, homotopy theory, and covering spaces), and I was wondering if people could describe some instances in which topology is useful for studying phenomena in physics (such as in condensed matter theory, or in...

Hello! I have done some research on transistors because I want to increase my current via increasing the voltage of a circuit in order to offset the increased load. As far as I understand, transistors can amplify (increase) voltage and current, as well as rectify (does this mean it can convert...

other than the physics (work) what are the applications of line integral? particularly does it have any use in finance or economics?

Homework Statement Given the equation mx''+cx=cAsin(Ωt) with the initial conditions x(0)=0 and x'(0)=0. Solve the initial value problem for the case when Ω < ω and show that |x(t)| < H provided A < H(1-(Ω/ω)). Homework Equations The Attempt at a Solution For my solution to...

Homework Statement An ion with a charge of +1e enters a region where the electric field produced by parallel plates at 630V separated by 7.0mm is at right angles ot a magnetic field B=450mT. The ion moves a straight line. Find the magnitude of the electric field and the speed of the ion...

I was given an assignment in my Fluid Mechanics Module with the title: Application of the Navier-Stokes Equations in Tribology Applications Yet the lecture has given no starting point and we haven't yet done anything to do with Navier-Stokes Can anyone help me on where to start?

Are there any applications at all so far depending on the so-called Copenhagen interpretation? By this I mean superposition of states that could be used in "quantum computers", quantum entanglement or "one-photon encryption". Or are there any applications coming up in the near future on any...

This thread is primarily the history of quantum mechanics, so I am not sure if it is appropriate for this forum. I understand that most of the foundational experiments in quantum mechanics were done in the first two or three decades of the 20th century. As far as I can remember, it is hard to...

Hi, Can you name a few house hold items that have a solenoid in them?APART FROM A DOOR BELL. Especially those which can be carried in hand. Thanks.

Homework Statement Hello! I'm having some difficulty getting the objective function out of this question, any help/hints would be appreciated >.< Company A prepares to launch a new brand of tablet computers. Their strategy is to release the first batch with the initial price of p_1 dollars...

Ok, so this is about my fiancee but it concerns us both since our future is, well together and whatnot. So ETS (the organization that runs the GRE exams) majorly screwed up with her official GRE scores. They misspelled her name and reversed the digits of her date of birth on the official GRE...

I'm applying for an REU this summer and I'm doing research this semester in QCD. My adviser does top quark research and at the home university of the REU applying to, there are two professors who do research in topics I'm particularly interested in, namely Lattice QCD. Neither of these two...

has any work been done trying to understand the properties of long chains of oscillatory functions? like f(x) = sin(sin(sin(sin(cos(sin(cos(x))))))) for example, or something like e^e^e^e^e^e^e^e^e^e^z)

Sorry if I sound naive but why do so many Linear Algebra books have the titles "and applications" only to give maybe one snippet of applications in each chapter.. I feel ripped off by those titles. I have Linear Algebra with Applications by Strang, Linear Algebra And Its Applications by David C...

any help with me understanding this problem would be very much appreciated. Homework Statement show, ^{π/2}_{0}\int cos^{5}xdx = 8/15 hence show ^{π/2}_{0}\int sin^{5}xdx = ^{π/2}_{0}\int cos^{5}xdx where, cos^{5}θ = \frac{cos5θ + 5cos3θ + 10cosθ}{16} sin^{5}θ = \frac{sin5θ -...

Homework Statement We want to construct a box with a square base and we only have 10 m2 of material to use in construction of the box. Assuming that all the material is used in the construction process determine the maximum volume that the box can have. Homework Equations Chain rule...

Firstly, an open statement to everyone in this forum. I am in search of some answers to questions I have so that I may have a better understanding of this research. For this reason I have posted this so that through all of you my lack of education or some may refer to ignorance I may be...

Hey all, I started reading up on string theory the other day, and a colleague told me that string theory is already being applied in communications. He said that it is being used to account for the effect of gravitation on electromagnetic waves. This seems a little too hard to believe...

I'm trying to think of real-world applications of the standard model of particle physics, but can't come up with anything. Are there any technological applications in which neither non-relativistic quantum mechanics nor Dirac's relativistic wave mechanics is insufficient, and QED must be used...

Nature of "Real" Applications Quantum Mechanics I've heard of several applications of quantum mechanics such as atomic clocks, transistors, lasers, etc. I understand how we need quantum mechanics to understand what's going on, but how exactly is quantum mechanics used in any sort of "real...

Hi, I have a project where I have to speak about some applications of the mass continuity equation for fluids. I only found this http://www.efm.leeds.ac.uk/CIVE/CIVE1400/Section3/continuity.htm, but that's not enough. What else do you think I can speak about?

I'm extremely raged right now, I see people applying Bernoulli's equation at fans, atmonizers etc. Let's look at the classic example where you blow through a straw and make liquid be drawn up from a can (through a second straw)...

Lets say you are a prospective applicant to an Engineering Grad School: What sorts of ECAs should you get involved in that make you look attractive to phd programs and where exactly do you put them ( resume?)? I mean things like : Volunteering, research in a different subject, part-time jobs...

Can you use any of these theories in daily life? Or how can you?

I live in the UK and I am hoping to start a PhD next October, so currently I am emailing potential supervisors about projects which I usually start off with a cover letter and a CV, however I don't seem to be getting any replies back! This includes some professors who I have emailed before...

Hey guys, As you can see this is my first post on the forum. I came here hoping to find some ideas for doing research with Schlieren photography. I am currently a senior in university and want to do research in physics for my final semester here. I came across Schlieren photography while...