Diagram Definition and 1000 Threads

Before you go all skeptic on me, I am just curious of the meaning of this: My friend and I are curious. So far we've gathered, - Ouroborous - The Seven Stars Raised some assumptions referring to the eternal cycle of life. I understand it's not exactly within the realms of...

Okay, I'm still working on it... but this is a free body diagram of the front of my college's view from a nearby park, which I have special feelings too. It's the place that introduced me to the beauty and majesty of physics, and first place that showed me that I am able to be an excelling...

phase diagram for x and xdot.

Hello, this might be a basic question. In feynman diagram's we represent the positron as traveling backwards in time. Is that correct ? How do we interpret this ?

Homework Statement Suppose that the four inspectors at a film factory are supposed to stamp the expiration date on each package of film at the end of the assembly line. John, who stamps 20% of the packages, fails to stamp the expiration date once in every 200 packages; Tom, who stamps 60% of...

Homework Statement I am trying to find terminal voltage of the batteries in the circuit shown. Homework Equations V = IR The Attempt at a Solution The solution manual says that it's the battery voltage, v, minus the voltage drawn from the resistance v = I * R. I understand this. I do not...

[PLAIN]http://blog.bfg9000.co.uk/wp-content/uploads/2010/11/pi_equals_4.png Could someone explain the error here?

Homework Statement I am given the object distance and height, and the focal length of the mirror and I must draw the ray diagram. Although this was drawn by a computer program that I programmed, I thought it would be more relevant in this forum, because I believe that the rays are correctly...

Homework Statement Hi, I know how to draw simple Shear Force Diagrams, but I am struggling with the example in the below picture, as it has a UDL. Homework Equations The Attempt at a Solution Normally for the solution, I should start the diagram at 26.7, then across and down...

I am trying to figure how the pins of 8086 are connected to different elements in the circuit? I don't understand how at this level the pins can be connected. can you explain? Is the second diagram suppose to be the internal view of the first diagram? The figure shows that there are 40 pin on...

What are the informations deducible from Hubble diagram of supernova 1a?

1. Homework Statement 2. Homework Equations I need to reduce the above block diagram to find the closed loop transfer function This is my solution to the reduction part of the problem: i) Add the feed forward paths; (10 + 10) ii) cascade G(s)2 x G(s)3 , {G(s)2 = 1/1+12, G(s)3= 20/s}...

Ok, so I have a problem as follows: A beam is simply supported at joints A, B, C D and E. there is a UDL acting on the BC member The member is 6m long with a UDL of 60kn/m However the tricky part is that this member is 1.2 times higher than the height of the members AB, CD, and DE. So BC =...

Homework Statement Hydrogen atom with ionisation energy 13.6 eV is found to have an emission spectrum with lines at 1.89 eV, 10.20 eV and 12.09 eV. Draw a labelled diagram to show the energy levels of hydrogen atom by showing the transitions of electrons causing the emission of the lines...

Hi all, What is the difference between a situation diagram and free body diagram? I understand what a free body diagram is. Thanks.

in a close loop P-V diagram, dQ = dE + PdV right? so if i want to get the net work down by the gas , i just need to find the Work done for each process right? but my dE is always 0 since cyclic process, so for constant volume, WD = ∫ PdV = 0 for constant temperature, WD...

Can anyone with knowledge of three phase system please explain the concept behind phasor diagrams and how to draw one based off given phase angles for both current and voltage? Thanks in advance for your time.

I've been searching the web with no luck - are there any open phase diagram databases available, preferably for temp-pressure-volume?

Can anyone describe to me the path a low mass body takes as it leaves the main-sequence? Or is it the case that a low mass body just moves along the main sequence, down to the right?

Whenever there's normal force there must be a force that causes it. Please explain how in this diagram of this object http://img850.imageshack.us/img850/605/aa1b.jpg Where first Free Body diagram is this: http://img534.imageshack.us/img534/9454/aa2zw.jpg Which I accept as...

1. Homework Statement and all the rest This is from a take home exam we already had graded. Professor does not mark our papers or review and we have no tutors. :( Can someone point where I went wrong? The blues are the few markings he made that I went over again and the orange...

This isn't really a homework question but I felt this is the most relevant section for this. I therefore apologize for not following the standard post template. I was going through my electrical engineering notes on frequency response functions. It was explaining how to plot frequency response...

Homework Statement There is a pair of dice hanging off the rear view mirror of a car, when that car turns left, the die swing to the right at an angle of 30 degrees. I need to draw a vector diagram, and have attempted 3-4 times, however none seem to be right. I am to draw and label all...

Homework Statement So, I got this task, which I feel either really dumb, or nobody is able to explain: I got this question: Z and W was discovered in 1973 at CERN, how were they produced? Include Feynman diagram and a short description. Then there is this question: How is the Z and W produced...

I have the circuit below which is supposed to take input of 100mV to 400mV and output a voltage of -10v and 10V respectively. I have designed the circuit below through multisim and would like to verify if its correct before trying to connect on breadboard. When I simulate the circuit, I get...

I have drawn up what I believe happens during electron excitation in an atom. However, it looks very... wrong somehow. My diagram shows an elestron moving in time but not space until it is hit by a photon, after which it disappears and instantly reappears at a higher energy level. After some...

Homework Statement I have to draw a temperature versus entropy for a carnot engine. My solutions say that as a parallel to the PV diagram, the adiabatics on the TS diagram are vertical, going from t2 to t1 and vise versa. My question is really how an adiabatic change results in a temperature...

Please teach me this: Why 2-point correlation function diagrams have only two external lines.Because of Wick theorem they would have many external legs. Another thing is whether are there odd number point correlation functions(meaning they are different from 0). Thank you very much in advanced.

hello everyone,:smile: i am having difficulty in understanding this circuit diagram from a book: http://img834.imageshack.us/img834/9462/ripplerectification.jpg my questions are also present there in diagram. i will be very grateful if someone of you nice people can help me without...

I'm involved in a project and I have to design a device that will "cap" the flow of water coming out of a pipe, which is located underwater. This device has to be transported down by an ROV that we have already made, so that's not a problem. The device I am creating involves a solenoid being...

Please teach me this: Why the naively divergence of a diagram is ln(lambda) (where lambda is ultraviolet cutoff) when the superficial degree of divergence D=0(the divergence of lambda^D when D=0)).I am reading the renormalization theory in Schroeder&Peskin and I do not understand this.I do know...

Help! I'm a third-year chick in engineering, stuck on a block diagram reduction problem for my control systems engineering course. Please email me and I'll send you a screenshot of the problem! kati@sidwall.com Thanks a mill. K xo

Homework Statement I'm asked to draw a Feynman diagram for two neutrinos scattering from each other. Homework Equations None The Attempt at a Solution I don't really get the question so I don't know what I'm actually supposed to put in the diagram. Am I supposed to draw a diagram...

The TL431 is a widely used as reference for voltage regulation. But in some cases there is a R and a C in the TL431 loop. I googled for the euivalent diagram, its an opamp with a reference and a diode in the feedback loop(+ve terminal of opamp and Cathode). I don't understand the function of...

Homework Statement I'm struggling to figure out what vectors I use for my phasor diagram for an RLC series circuit. Homework Equations VC = 1/j\omegaC VL = j\omegaL VR = IZ The Attempt at a Solution I know how to add vectors, so that's not a problem, transfer my circuit from the time...

Two objects X and Y are moving away from Point P. The diagram I linked shows it. It then asks us: Which of the following velocity vectors represent the velocity of X relative to Y. The answer is B, but the same book told me in another part that we should subtract vectors to get the...

http://map.gsfc.nasa.gov/media/070950/070950b.jpg So the x-axis is multipole moment, which I remember from 2nd-quarter electromagnetism. Anyways, it surprises me that 1000-order multipole moments can even be physically significant.

Does anyone know where http://space.mit.edu/home/tegmark/toe_cut.gif came from?

For a defect in a semiconductor. We plot the energy against some "configuration coordinate", noted in general as "Q". What is this coordinate ? In my understanding it is some position related to the defect in question. Also, is the energy plotted in the diagram the energy of the...

Hello all! First post! I've been meaning to join this board for a while. I'm an electronic engineer with interests in physics. I set myself the challenge of trying to obtain the dynamics equations for a double pendulum setup without using Lagrange. (configuration in attached picture)...

Here is my circuit diagram. http://s1227.photobucket.com/albums/ee430/Shayaan_Mustafa/?action=view&current=untitled-1.jpg&t=1299237316875 I am unable to solve my circuit with the help of Kirchhoff's law: Here is my KVL equations: 24-v1-v3-v8=0------(1) v3-v2-v4-v7=0------(2)...

Homework Statement The relationship between velocity and position of a simple pendulum is given by the equation y= \pm\sqrt(2(C+\omega^2 cos x)). The corresponding phase diagram is attached. How on Earth did they come up with the phase diagram. How do you plot such a complicated equation...

Hi, I've been trying to work out exactly why the t=const and r=const lines look like they do in the Minkowski conformal diagram. I started with the usual Minkowski metric in polar coords (t,r) then go into null coords, then pull in the infinities by using arctan transformations, finally I then...

[b]1. See following attatchment [b]2. Moment of force= (force)*(perpendicular distance) only for scalar problems. [b]3. Well i know that moments are a cause of roation among a certain point and when computing equilibrium we have to calculate the moment for every force on the free...

For beta minus decay, I know the reaction is given by neutron -> proton+electron+anti(electron)neutrino. This is an image of the Feynman diagram for the reaction: http://tmp.kiwix.org:4201/I/280px_Beta_Negative_Decay_svg.png I get that the neutron changes to a proton releasing a w-...

Homework Statement A small bulb is placed in front of a convex lens. a) Suppose that the bulb is placed as shown. Using all three principal rays, draw an accurate ray diagram to determine the location of the image. Label the image location...

hi guys, i came across this problem in my material science class. can anyone help me with this problem? thanks! ** (-> an electron) Ec ___________________________ }-> 0.2eV, from Ec to electron Ec - Ev = 1eV Ev ____________________________...

Hello, I read an article about a year or two ago and I cannot remember in what magazine I read it, so I was hoping to generate some leads by reaching out. I want to find it because my professor wants to see it as well. The article was about a team or group of physicists, at a certain...

Homework Statement I have an assignment that is similar to the following question. I believe if i am able to do this question i will be able to do the assignment. However I cannot seem to be able to get this question right. Below the question and answer...

We usually plot the energy versus k, the wave vector, in the so-called "energy band diagram" for semiconductors. I am trying to understand the significance of "k" in this case. k is the wave vector, which means come kind of reciprocal of the space wavelength of the wave. But this definition...