Diagrams Definition and 659 Threads

I'm trying to understand how the J-K flip flop works and how to draw the timing diagrams. I was reading about it on wikipedia and was wondering if someone could explain this to me: "Specifically, the combination J = 1, K = 0 is a command to set the flip-flop; the combination J = 0, K = 1 is a...

Hi, I have spent all weekend reading Textbooks, where I concentrated on Cahn, trying to understand what is going on in Lie Algebra lecture notes. I am having a lot of trouble because I have no background in maths other than applied maths, and lie algebras is so different to applied maths and I...

Hello all, Since I have run into the problem of regularly leaving moments out of my free body diagrams (and vice versa), I thought I'd pose a question on the topic. In trying to wrap my head around the concept, I've gone back to the beginning of the semester's notes and that didn't really...

http://arxiv.org/abs/gr-qc/0604016 Hidden Quantum Gravity in 3d Feynman diagrams Aristide Baratin, Laurent Freidel 35 pages, 4 figures "In this work we show that 3d Feynman amplitudes of standard QFT in flat and homogeneous space can be naturally expressed as expectation values of a specific...

would this be all the forces acting on this cart and on the mass (minus friction of course)

does anybody knows any website that i can get information on how to draw timing diagrams for sequential or normal circuits?? pls help as i have ran out of idea...thanx

Q: Use symbols to draw a circuit diagram showing two dry cells connected in parallel with each other, and in parallel with two light bulbs. Show a voltmeter connected to measure the electrical potential of the two dry cells and an ammeter to measure electrical current through one of the bulbs...

Hi, Does anyone know of any freeware available in the internet for creating diagrams for physics classes. I need to be able to draw clearly labeled diagrams for all kinds of problems that we encounter in physics. I found one at [PLAIN]www.sherifsoftware.com[/URL] called Drawplus4. Has...

Hello, I'm looking for a program to draw Feynman diagrams, are there any useful tools, or do you draw them in Photoshop?

Can someone please check to see if I drew teh circuit right? It's supposed to be 3 D flip-flops wired together such that D1 = Q3, etc. on the bottom. And how would I go about drawing the timing diagrams for the outputs if all of them start in the set state. I get really confused about timng...

Hi. Does anyone know what the spacetime diagram of a binary star system would look like? thanks pic would be great blumfeld0

Question: "A block of mass m1 = 1.87 kg and a block of mass m2 = 5.84 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.180m and mass M = 12.7 kg. These blocks are allowed to move on a fixed block-wedge of angle 31.4 degrees as in the figure...

I used to understand this -- a few years ago -- but it has completely slipped my mind. What is going on with al this 1s2 and Like Cs[Xe]6s1? Thanks a lot, Mk

urgent help needed http://www.physik3.gwdg.de/~rgeisle/nld/sbsl-howto.html Halway down that page is a circuit diagram. In the diagram wires don't lead to anywere(after the resister label R1 the wire doesn't go anywere), I don't that much about reading circuit diagrams but I know those wires...

I am trying to learn more about air coupling. That is the coupling between 2 shafts I am having a hard time finding any information on the subject matter does anyone know how these systems work and have any diagrams? thanks

how would the electron dot diargram for CN look? i am tired and stumped.

I'm having difficulty figuring out how to work this problem: Assume a material has a given E-K diagram: E(K)conduction = Ec + E1 * sin^2 (Ka) E(K)valence = Ev - E2 * sin^2 (Ka) a=0.5nm E1 = 5eV E2 = 4eV I have to: * sketch the E-K diagram for the first brillouin zone (-pi/a < k <...

I am confused with the Scharnhorst and Casimir effects. The confusion started here. As it seams that there is no response to my questions in post #9, I will try here. I stated there my understanding about perturbation theory which leads to Feynman diagrams: The amplitudes for the fluctuations...

Need some help. I studied math a million years ago and my boss thinks I still remember anything about diff EQ besides my professor's haircut. I don't. I have these diagrams (http://www.dubberly.com/stage/Maxwell2.jpg and attached). I need to label them with appropriate formulas. I have a...

Hey, I was wandering if anyone knew if the Feynman diagrams could be created in Latex or in threads like this? If not then maybe it would be an interesting development avenue...

Like so. Can we already do this? Does anyone else want to? I think it would be helpful. For explaining some things, trees are just so much clearer than anything else. What I can do in code seems quite limited. N /\ / \ A -ness /\ / \ un- A...

I'm looking for info/help/cct diagrams on ECG machines, how they work etc etc. the full works. Looking to make a "simple" wireless ecg on bluetooth/rf. any help? sites? thanks:)

Hi Guys! well! can anybody tell me the correct way of drawing phasor diagrams of Series-Parallel RLC circuits. I know how to draw for Series RLC and Parallel RLC but don't know WHEN it comes to SERIES-PARALLEL combined. Plz help me. Plus can u recommend me any website from where i can...

https://www.physicsforums.com/attachment.php?attachmentid=4225&stc=1 Determine the reaction forces at the four contact points A,B,C,D. The hollow balls which are homogenous and made of the same material have masses of 1.02kg and 2.04kg and the chamber they sit in is 55.98cm wide. Everything...

I am having a difficult time understanding how to do dot diagrams, more specific for "pentyne"

A man sits in a bosun's chair that dangles from a massless rope, which runs over a massless, frictionless pulley attached to the ceiling and back down to the man's hand. The combined mass of the man and chair is 90.0 kg. Ok, I found a solution that had T=Mchair*a + Fnormal + Mchair*g. How did...

I'm having a lot of trouble drawing ray diagrams (this is for a lab assignment). If anyone could give me some tips or links to websites that are helpful in teaching how to draw ray diagrams that would be great. One example of a problem is: A 1-cm tall arrow (the object) is placed 2 cm to the...

Hi, I am currently doing the write up for a project (Mercury spectroscopy), and would like to put some energy level diagrams in, with the transitions being shown. Does anyone know any software (preferably free/open source) that could do this, or help? Or if there is a way to do it in latex...

Can anyone lead me to some good hydraulic piston/ram diagrams or schematics? thank you

i want to transform the black diagram into a series and parellel circuit (as u a see that the black diagram isn't exactly series or parellel). i made the two top left resistors into one (blue circle), and i want to do the same thing for the other two in green circle. however, if i make the top...

Free Body Diagrams...help please! hello hello, i'm just having a bit of difficulty concerning free body diagrams: how would i draw an FBD for the following... a) an object has reached terminal velocity. would this mean that the object has reached a constant velocity, therefore force...

Draw the diagram that represents the locus in each of the following situations. What is the locus of each? Going down an escalator Sitting in a seat on a Ferris wheel as it rotates. All the points that are 2 cm from a parabola. All the points that are 5 cm above a line. I don't...

I'm not quite sure how to do this. I posted the diagram at my web site...the question is also there, but I typed it here just to give you an idea of what it is about. Thanks! The website: http://www.geocities.com/jessparker502/ For this problem establish the x-axis with the origin at...

(i guess this should be easy, but I'm struggling with this section...) I'd appreciate help! I'm not quite sure how to do this. I posted the diagram at my web site...the question is also there, but I typed it here just to give you an idea of what it is about. Thanks! The website...

Hi all, For an online physics assignment I have a question about a block resting on a slope. The question asks what forces are acting on the block.. and I was thinking normal and weight force? But it turned out to be incorrect... list of possibilities to choose from weight kinetic...

Is there a systematical way to count all the possible feynman diagram with vertices less than or equal to n...

How the stress-strain diagram of Cast Iron differs from that of Stailless Steel? If someone can post a link of a website from where I can find stress-strain diagrams of different materials, it would be very helpful for me. Thanks in advance!

Can anyone direct me to some good sites describing how to construct phasor diagrams based on different circuits? Didn't have much luck using search engines.

A physical process can be represented by Feynman diagrams, each with a complex amplitude. Squaring the sum of these amplitudes gives the rate at which a process occurs. Since a rate can be a frequency,doesn't this imply that before the sum of amplitudes is squared, we are dealing with the...

im having trouble solving this? what do i do with mew? thanks :cry:

Please help me wif these problems! I have no idea. A person with a body resistance between his hands of 10 kohms accidently grasps the terminals of a 20 kV power supply. (a) Draw a circuit diagram including all the data. (b) If the internal resistance of the power supply is 2000 ohmns, what...

Into "the past"?: Tricky SpaceTime Diagrams? It's commonly stated that according to GR, traveling faster than light would mean going backwards in time (to "the past"). When I try to picture the situation with the aid of a spacetime (light-cone) diagram, I still don't get why should it lead...

I am studying Obversion for the first time in terms of Venn Diagrams. I'm am struggling to understand the conventions. Obversion requires two steps: (1)The quality must be changed. (2)The predicate is replaced with it's complement. Before I go on, I want to point out two types of...

Hi, I'm typing up all my maths notes for when I go to university and I have some fairly good programs for displaying all the maths symbols etc. However could someone please point me in the direction of a good program that I could use to quickly make graphs of functions or easily make diagrams to...

I read a book called hyperspace. And in it it mentioned that 4 d diagrams are unperciveable by man and he can picturize only in 3 D. Is that the opinion of everybody? Because i believe that dimensions are themselves only projections of shadows of points. THis is probably already known, i really...

Ok, a lens is held upright with a piece of clay. In front of it is a bulb, and behind it is a screen at the location of the image of the bulb. Now, what would happen to the image if the top half of the lens were covered by a mask? And what if the mask had a small hole in the center and were...

I have been going through many books on QED, trying to get a general non-mathematical feel for it before I take a course in it and I have come across some questions that I have not been able to answer. Nearly all of the sources I have gone to refer to Feymann Diagrams as a easy way to depict...

So I have a midterm on Bode Diagrams and Root-Locus on Thursday...and I can not do either. At this point I am only focusing on the Bode diagrams because they are a bit easier and I want to master them now so that I can devote the rest of my time to the Root-Locus. Say I have the transfer...

Need help showing diagrams... I am to draw diagrams of: There are 16 units is a cad and 5 units is a gad: how many gads in a cad? I know 16/5 = 3.2 how many cads in a gad? I know 5/16 or .3125 One cad is what percent of one gad? 16/5 * 100 = 320 ONe gad is what percent of one cad...

forces exerted by a magnet After learning about the right hand rules for a magnet on a wire, my packet asks for me to draw the vector diagram for the force F from a magnetic field B on a moving positive charge with velocity v. What is it looking for? I don't know if B is into or out of the...