What is Coupled: Definition and 414 Discussions

Coupled is an American reality show that aired on Fox from May 17 to August 2, 2016. It was hosted by television personality, Terrence J and created by Mark Burnett, of Survivor, The Apprentice, Are You Smarter Than a 5th Grader?, Shark Tank, and The Voice, as well as Ben Newmark, Dan Newmark and Larry Barron.Filming took place in Anguilla. The cast included Miss Arizona USA 2009, Alicia-Monique Blanco; Miss Colorado USA 2015, Talyah Polee; host, Domonique Price, and American singer-songwriter, TV personality, and former collegiate athlete; Alex Lagemann.
Tyler Gattuso was in the running to be a cast member on Big Brother 17, but was ultimately not chosen due to the news being leaked by online media and his Instagram hinting at the news suggesting he wasn't going to be active for quite a while. A few days later, after the cast for Big Brother was announced, he was ranting on Twitter, shortly deleting them and deactivating his account.On August 8, 2016, Fox canceled the series after one season.

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  1. L

    Coupled non-linear differential equations

    Homework Statement x'= E - sin x + K sin (y-x) y'= E + sin y + K sin (x-y) E and K >0 Find fixed points for this system of equations Homework Equations This system is the form of coupled oscillators described in Strogatz. θ1'= ω1 + K sin (θ2-θ1) θ2'= ω2 + K sin (θ1-θ2)...
  2. Astrum

    Coupled ODEs in Electromagnetism

    Homework Statement Solve the equations of motion ##\ddot{y}= \omega \dot{z}## and ##\ddot{z}= \omega (\frac{E}{B}-\dot{y})## Homework Equations The Attempt at a Solution Integrate the first equation to get ##\dot{y}=\omega z + c_1## and plug into equation 2: ##\ddot{z}=\omega...
  3. V

    Quantum Mechanics: Coupled Electric Harmonic Oscillators

    Hi I am doing this completely out of self interest and it is not my homework to do this. I hope somebody can help me. Homework Statement In the book Biological Coherence and Response to External Stimuli Herbert Fröhlich wrote a chapter on Resonance Interaction. Where he considers the...
  4. N

    Coupled oscillators analog to EIT - do I miss something?

    Hi, I have posted this question to "classical physics" forum, but now I think this forum might be more appropriate. I have no idea how to move the thread here, so here is a copy.. The question seems trivial, but I want to check if I miss something. Homework Statement I'm trying to...
  5. P

    Coupled Oscillator Homework: Normal Modes & Frequencies

    Homework Statement Two identical undamped oscillators, A and B, each of mass m and natural (angular) frequency $\omega_0$, are coupled in such a way that the coupling force exerted on A is \alpha m (\frac{d^2 x_A}{dt^2}), and the coupling force exerted on B is \alpha m (\frac{d^2...
  6. R

    Odd Form Of Eigenvalue - Coupled Masses

    Odd Form Of Eigenvalue -- Coupled Masses This isn't strictly homework, since it's something I'm trying to self-teach, but it seems to fit best here. Homework Statement It's an example of applying eigenvalue methods to solve (classical) mechanical systems in an introductory text to QM...
  7. T

    How can I solve a coupled PDE and ODE using the method of lines?

    I am trying to solve an ODE and PDE and I am having problems coming up with a method for doing so. The PDE is: k1*(dC/dt) = k2*(dC/dx) But I have an ODE that is an expression for dC/dt: dC/dt = k3*C Where k1,k2 and k3 are constants. I planned to use the method of lines to get...
  8. F

    Synchronized coupled harmonic oscillation

    Given a general solution to the fixed-end two-mass coupled harmonic oscillator(http://teacher.pas.rochester.edu/PHY235/LectureNotes/Chapter12/Chapter12.pdf), is there a set of initial conditions for position, velocity, the 3 spring constants, and 2 masses such that a transition from random phase...
  9. C

    Three coupled pendula via springs

    Homework Statement See attached link The Attempt at a Solution I am fine up to the point where I have to express in matrix form. My method was, given the equation for the energy, to put this in matrix form and then recover the equations of motion from there (by differentiating and...
  10. J

    Coupled 2nd Order DE: Convert to system of 1st Order

    It's been a while since I've played with systems of ODEs, and I seem to have forgotten some of the tricks. As an example, I have two coupled nonlinear DE that I want to convert to a system of four 1st order nonlinear DE. But, the normal way of making variable substitutions is not working of...
  11. H

    Electromagnetism coupled with continuum mechanics

    Are there any textbooks on something like this, a self consistent treatment of classical electromagnetism (relavistic is fine too) where the field equations are solved alongside with the matter fields.
  12. Z

    Solving a pair of nonlinear coupled DEs

    Hi everyone, new member zeroseven here. First, I want to say that it's great to have a forum like this! Looking forward to participating in the discussion. Anyway, I need to solve a pair of differential equations for an initial value problem, but am not sure if an analytical solution exists. I...
  13. K

    Notes for Coupled Oscillations?

    Does anyone know any site with a good set of notes on coupled oscillations?
  14. E

    Maximum Power Transfer for Coupled Emitter Follower

    Homework Statement For the attached emitter follower circuit, calculate the maximum ac power (Sinusoidal signal) delivered to an attached load. I have already calculated Rout of the circuit as 19.2Ω, and the voltage at the emitter at operating point (no input signal) as 10.7V (I know...
  15. A

    Designing Inductor Value for Coupled RLC Circuit

    hello, i am deriving an equation for designing an inductor in a coupled RLC circuit. is there an equation for calculating inductor value by knowing the input and output voltages & output current of the RLC circuit ? i have tried KVL and KCL equations but in vain. please help thank you
  16. N

    Eigenvalues of nonlinearly coupled equations

    Hi everyone, I am currently dealing with a nonlinear system of coupled equations. In fact I had performed a perturbation approach for this system which is highly nonlinear. Thanks to first step of the perturbative approach I could reach eigenvalues in the "linear case". Right now I want to...
  17. A

    Coupled Equations Motion/Rotation

    I'm looking for the set of equations that describe an untethered rigid body about a body fixed axis in relation to a reference axis (ECI or etc.). I'm not sure what they are called. I was trying to use DCM or Quaternions to do this, but the discrete motion nature of these won't work for my...
  18. C

    Coupled mass problem with orthogonal oscillations

    Homework Statement Consider a light elastic string of unstretched length ##4a_o##, stretched horizontally on a smooth surface between two fixed points a distance ##4a## apart. (##a > a_o)##. Three particles of mass m are attached so as to divide the string into four equal sections. Number...
  19. U

    Solving Coupled Oscillators: Find Spring Constants

    Hi, I didn't understand the exercise so I didn't do it and my teacher doesn't give the details of the solutions. If somewone can help me and explain me the steps.. it'd be great ! Three block of mass m=0.13kg are connected with three springs of constant k1 k2 k3 and Two of the normal...
  20. J

    Simulating a NAND/AND gate in Emitter Coupled Logic?

    Homework Statement I need to simulate a AND/NAND gate with Emitter Coupled Logic. As I'm sure that most of you know, ECL is mostly used to make OR/NOR gates, so finding out how to make a NAND/AND gate is not as easy as it sounds. Homework Equations The Attempt at a Solution I...
  21. C

    Solving coupled linear diff. equations

    Homework Statement http://i.imgur.com/zmtJ64Z.jpgHomework Equations B is a column vector {{0},{0},{1}} E is a column vector {{1},{0},{0}} v(t) is also a column vector {{v_1},{v_2},{v_3}} The Attempt at a Solution I have calculated v(t) x B to get (v_2,-v_1,0) and I made a matrix, | 0 1 0|...
  22. N

    What is an Optically Coupled Reactor?

    Hello all, I've been interested in nuclear power and how it applies to space propulsion for awhile now. I've come across a term though that I don't quite understand. What is an optically coupled reactor? In context, it says that the design "separates the power conversion system from the...
  23. B

    Energy transfer between two coupled masses

    Homework Statement A system consists of two masses. The system has normal modes of frequency wa and wb. Suppose one of the masses is displaced. How long will it take for energy to be transferred to the other mass and then back to the first mass. this question is a review question for my...
  24. 3

    Two coupled, second order differential equations

    While studying the derivation of the normal modes of oscillation of a liquid sphere in the paper "Nonradial oscillations of stars" by Pekeris (1938), which can be found here, on page 193 and 194 two coupled second order differential equations in two variables are merged into one fourth order...
  25. L

    Planning and Designing a lab on Coupled pendulums

    My teacher told me plan and design about 4 labs, okay the thing is I'm not sure about the layout of P/D for physics labs. I know there has to be expected results, I'm confused I don't know what to put there. My teacher gave me a lab manual to try and guide me okay, in the book at the end...
  26. D

    How to Model Droplet Vaporization Using Coupled Non-linear Equations?

    Hi,I'd really appreciate any help on this as I've spent many many hours trying to get my head around it. I am simulating the vaporization of a droplet in hot air and I have two equations to use: m_lc_l\frac{dT_l}{dt} = \widetilde{h}A_0(T_\infty - T_l) + \dot{m}_l(h_v-h_l) \dot{m_l} = -\frac{\pi...
  27. J

    Ansoft Maxwell 3d Closely coupled inductor

    Hello! I am having an issue with getting any graphs on inductance or induced voltage. In the attached circuit: What I have is a 28Vac source w/ 400hz and 2 coils (R=18.6ohm each) that are connected with a common. In the model: I have a core in the center that will be able to move up...
  28. D

    Solving a coupled nonhomegenoues ode

    Homework Statement \dot{ω_{1}} = λω_{2} +μ \dot{ω_{2}} = -λω_{1} Homework Equations λ and μ are real, positive constants ω_{1}(0) ≠ 0 ω_{2}(0) ≠ 0 The Attempt at a Solution I know that the general solution will be in the form ω1(t) = A sin ωt + B cos ωt + C ω2(t) = D sin...
  29. S

    MATLAB How Do You Solve Coupled ODEs Using MATLAB's ode45?

    Help me with coupled ode45 equations in MATLAB please I have no idea to turn these into MATLAB code, and here is the porblem: y(1)' = y(2) y(2)' = - (r+re)/(L+le)*y(2) - y(1)/c*(l+le) y(3)' = y(4) y(4)' = -c*y(4).^2 /m+L*y(2).^2/(2*m) where re = ro+Rpr*z+Lpr*z' le = Lo+Lpr*z the rest...
  30. G

    Solving system of 2nd order coupled ODEs

    I have to derive equations of motion from Lagrangian and stumbled upon the following system of equations (constants are simplified, that information is unneeded) \begin{cases} \ddot{x}-A\dot{y}+Bx=0 \\ \ddot{y}+A\dot{x}+Dy=0 \end{cases} This is an extension of a simpler problem where B=D...
  31. H

    Solving coupled differential equations for spin-1/2 in a B-field

    Homework Statement (Sorry, I don't know how to use latex) Solve the TDSE for a spin half nucleus in a B-field where B_z = B0, B_y= B1 cos(ωt) and B_x = B1 sin(ωt). Use vector and matrix representation. You will get coupled differential equations for a and b, look for solutions of the form a =...
  32. K

    How to solve two coupled pde's

    I'm new, hi all. I have two coupled equations, one of which is continuity. Basically, my problem comes down to the following system: (1) u=f(v) (similarly, v=g(u). Here, u and v are the components of a vector field, ie u=u(x,y) and v=v(x,y). (2) Continuity: \nabla \cdot \textbf{u} = 0 or...
  33. O

    Determening the Period of Coupled Oscillators

    Hello everyone, I was wondering how could you determine the period of the motion of two or more coupled oscillators. For example, two oscillators have the state variable equations: x_1=A_1\cos{(\omega_1t+\phi_1)}+A_2\cos{(\omega_2t+\phi_2)}...
  34. F

    Coupled pendulum oscillations.

    http://www.google.pt/imgres?q=pendulo+acoplados+resson%C3%A2ncia&um=1&hl=pt-PT&sa=X&biw=1280&bih=656&tbm=isch&tbnid=BSwiWnZmGwlLGM:&imgrefurl=http://www.oficinadaciencia.com/Produtos/Default.aspx%3Fid%3D6493&docid=n05kCljLeoXYCM&imgurl=http://www.oficinadaciencia.com/imgs/ReadImage.aspx%253FpId%2...
  35. F

    Coupled physical pendulums ( )

    Coupled physical pendulums (URGENT) Imagine that you have coupled physical pendulums like this (see image below). mass is in the inferior part of the pendulum.* Now we let the right pendulum swing without initial speed = 0 with a certain amplitude. As we know, the amplitude of the right...
  36. G

    System of second order linear coupled pde with constant coefficient

    Someone know how to uncouple this system of pde? Δu_{1}(x) + a u_{1}(x) + b u_{2}(x) =f(x) Δu_{2}(x) + c u_{1}(x) + d u_{2}(x) =g(x) a,b,c,d are constant. I would like to find a solution in one, two, three dimension, possibily in terms of Green function...someone could help me, please?
  37. R

    Understanding Forces in Coupled Oscillating Systems

    Hi How do you determine the forces in a coupled oscillating systems? (check the attachment for coupled oscillating system) I do get the forces right but I make mistakes with the signs.
  38. H

    Vector Notation, arrow coupled with hat versus hat alone

    I've attached the .pdf from which I have questions. After it says "Take the square of the numerator" halfway down the page, there is an equation that lists vector components with hats and arrows at the same time, and the arrow on other vectors. Can someone help explain the difference to me...
  39. N

    Coupled set of ODEs and Laplace Transform

    Homework Statement Hi I have a set of five coupled ODE, and I would like to find a solution to the first variable X in the set (the rest I call Y, Z, V, W). The equations are of the form \frac{dX}{dt} = A + BY - CX This isn't homework, but something I been working with for some time. OK, so...
  40. N

    Mathematica Mathematica: Coupled differential equations

    Hi I am trying so solve a set of coupled ODE's. I have been able to get a solution from Mathematica using NDSolve, but when I change the coefficients an error appears: "NDSolve::mxst: Maximum number of 10000 steps reached at the point t == 0.0000748339914040257`. >>" I have tried...
  41. M

    Coupled Cluster Scaling Question

    Hi, I have a relatively small system. It takes 10 minutes to perform a CCSDT calculation. I know scaling is notoriously bad, but does anyone have a rough idea of how long a CCSDTQ calculation would take on the same system? Are we talking days or months? Thomas
  42. F

    Coupled PDE System - Numerical Solution

    All, As part of my research I came up with a boundary value problem where I need to solve the following system of coupled PDE: 1- a1 * f,xx + a2 * f,yy + a3 * g,xx + a4 * g,yy - a5 * f - a6 * g = 0 2- b1 * f,xx + b2 * f,yy + b3 * g,xx + b4 * g,yy - b5 * f - b6 * g = 0 Where, ai's...
  43. N

    Atomic Coherence(Polarization) of Two Dipole-Dipole Coupled Atoms

    My question is about generalization of most simple problem in semi-classical quantum optics. Composite system of two-level systems. single system's diagram: http://ars.sciencedirect.com/content/image/1-s2.0-S0030401807009777-gr1.jpg where atomic frequency: wab=wa - wa; probing frequency...
  44. J

    Analytical solution for coupled partial differential equations

    Hello, In my study i came across to solve the analytical solution for coupled equation y(x,t) and z(x,t).The equations contains" f " function which is a function of the first variable exponentially. The first equation is : ∂y/∂t=∂^2(y)/∂x^2- 2*f(y)*z; The second equation ...
  45. A

    Coupled partial differential equations

    Hello every one, In my physics problem, i end up having two coupled second-order nonlinear differential equations where the coupling terms include, the variable, the first derivatives, and also a second derivative coupling. I appreciate any help on how to handle this system before setting it...
  46. O

    Question about driven coupled oscillator.

    How does one go about plotting the effects of the frequency of the driving force vs the amplitude of the masses in a system such as the one pictured below? Assume that I have already figured out what my two angular frequencies are, and the amplitues under driven force (the actually equations...
  47. T

    Boundary Conditions for 3 Coupled First order ODE

    I am trying to solve four coupled equations. Three of them are first order differential equations and the fourth is a algebraic one. The equations look something like this: V_{l}(r) = f_{1}(r)W'_{l}(r) (1) h''_{l} + f_{2}(r)h'_{l} + f_{3}(r)h_{l}(r) = U_{l}(r) (2) f_{4}(r)U'_{l} +...
  48. S

    Equation of motion for coupled oscillators

    Attached is the formula for the equation of motion for a system of coupled oscillators. Could someone please tell me what the variables and indices refer to here? Thanks! :)
  49. M

    Position operator for a system of coupled harmonic oscillators

    Hi I would like to know if I have a system of coupled harmonic oscillators whether the standard position operator for an uncoupled oscillator is valid, i.e. x_i = \frac{1}{\sqrt{2}} (a_i+a_i^\dagger)? where i labels the ions. To give some context I am looking at a problem involving a...
  50. V

    How to Decouple a System of 3 Coupled Linear PDEs?

    Hi all, I have a system of 3 coupled linear PDEs which can be expressed in matrix form as: \left( \begin{array}{ccc} \alpha_1 \partial_{\theta} & \alpha_2 & \alpha_3 \\ \beta_1 \partial_r & \beta_2 & \beta_3 \\ 0 & \gamma_2 \partial_{\theta} & 1 + \gamma_3 \partial_r \\ \end{array}...
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