Diagram Definition and 1000 Threads

  1. P

    What is tan θ in this diagram?

    < Moderator Note -- Thread moved from the technical math forums (that's why the HH Template is not shown) > It's supposed to be a simple problem. But I can't for the life of me figure out how to go about it. I managed to find out cos θ using the cosine rule, but it is a very long expression and...
  2. S

    Free body diagram of an incline

    Homework Statement For the maximum angle for which you have data draw a free body diagram and explain how the forces add to give the resultant (net) force and show the calculations required to determine the acceleration. The lab was about using Galileo's inclined plane to measure acceleration...
  3. bearcharge

    Deriving Tanabe Sugano diagram

    Hi all, As a beginning theoretical chemist, I'm trying to understand how Tanabe-Sugano diagram was derived. Can someone help me understand the derivation in a nutshell? Thanks!
  4. N

    Free body diagram and applying Newtons law

    hello! this is a question that iv been working on and can't seem to figure it out, i checked out the other two threads on this same question but they were of no help, anyway here it is: A wedge with mass M rests on a frictionless horizontal table top. A block with mass m is placed on the wedge...
  5. Z

    How to run Madgraph to calculate Feynmann Diagram

    Hello, Now I am studying some software to analyze the scattering process,but when I download the Madgraph and Python,I can't enter the interface,now I tell you my operation,could you tell me where I am wrong? First,open Python,File open (madgraph tutorial text).But how could I operate...
  6. G

    How do I model the motor in this free body diagram problem?

    Hi I have a problem in understanding the attached free body diagram problem. I have a shaft that is pivoted at the top. Below the pivot is a magnetic bearing with a radial stiffness of 2600N/mm. I've modeled this as a springs in parallel. Below the bearing is a motor with a radial stiffness of...
  7. Feodalherren

    ME statics Draw the moment diagram

    Homework Statement The first segment starts at -650 and ends at -1100. The second segment starts at 1200 and ends at 0. Homework Equations dM/dx = V The Attempt at a Solution I attempted to break the problem into two parts. For the first segment: Skipping a few steps: w = 100x dV/dx =...
  8. G

    Free Body Diagram Forces of a Rope Hoisting a Weight via Pillars

    So I am designing an apparatus to lift a 500g load up 500mm and I am trying to find reactions. I have filled in these values in my head with my own logic but I don't know how to do the maths and if I am right or not. I can do the initial position ok but it is the final position I am unsure of...
  9. R

    Chemistry Molecular Orbital Diagram for Tetrahedral Compound

    Homework Statement I'm trying to construct a molecular orbital correlation diagram for a tetrahedral compound [NiX4]2- considering the ligand pi-orbital basis. I've already constructed a diagram wherein the only the sigma-orbital basis is considered. In that diagram, I had 12 electrons for the...
  10. V

    Engineering Optimizing Circuit Diagrams with Multiplexers: Eliminating Negations in Inputs

    Homework Statement Homework EquationsThe Attempt at a Solution [/B] The multiplexer that is closest to the top of the page has ~x3 as an input but I am not allowed to use the negation of a logical variable as an input. Any way to get rid of this negation?
  11. Adriane

    How to Distinguish Between Similar Traits in a Phylogenetic Tree?

    Homework Statement Draw a phylogenetic tree to illustrate the ancestry of the seven organisms chosen: dog, human, kangaroo, snapping turtle, penguin, rhesus monkey, bullfrog At each branching point, identify the derived characteristic that creates the branch. Homework EquationsThe Attempt at...
  12. M

    Explaining the mechanism of a reaction and drawing its Energy diagram

    Homework Statement This was a lab. I started with Maleic Acid. We performed a temporary corbonication to see whether or not the single bond would rotate to create fumeric acid, maleic acid or both. The question that I have to answer that I cannot answer is: Explain the mechanism of the...
  13. K

    Calculating velocity given mass, force, kinetic friction & angle (crate diagram)

    Homework Statement The 40 kg crate shown in the Figure below rests on a horizontal plane for which the coefficient of kinetic friction is mk = 0.3. If the crate is subjected to a 350 N towing force as shown, determine the speed of the crate 3 seconds after starting from rest. + given angle of...
  14. J

    Get transfer function from block diagram

    Hello guys! 1 & 2: I would like to get some help to take everything in A and find transfer function at B and C. I can't find these answer... 3. I know how to go from b) to c) .. we only multiply by E(s) and B(s). But I can't find b) at first. Thanks so much! JPGraphX
  15. C

    Free Body Diagram of a Truck with a Box

    Homework Statement A large box containing your new computer sits on the bed of your pickup truck. You are stopped at a red light. The light turns green and you stomp on the gas and the truck accelerates. To your horror, the box starts to slide toward the back of the truck. (Assume that the...
  16. T

    Thermo physics (Phase diagram Phase changes)

    Hi have some thermal physics question would like to clarify. Thanks :) Question 1: For a substance in a pure phase heated at constant pressure, the heat absorbed is related to ____________ (a)the molar heat capacity of the substance (b)the amount of substance (c)the change in the kinetic energy...
  17. P

    Help With Drawing a Free Body Diagram

    Homework Statement A large box containing your new computer sits on the bed of your pickup truck. You are stopped at a red light. The light turns green and you stomp on the gas and the truck accelerates. To your horror, the box starts to slide toward the back of the truck. (Assume that the...
  18. SalfordPhysics

    Quantum State diagram for system of particles

    Question: "Write the quantum state for the following system of particles distributed over evenly spaced energy levels" The diagram (couldn't upload so hope its not too rough): 5 ---------------------- 4 ---------------------- 3 --------------X------- 2 ------X---X------X---- 1...
  19. E

    How to tell if the components are in parallel or series

    Homework Statement I need to work out the impedance of this notch filter, and what I really need is to know how to read the diagram, because if I can do that the rest isn't so hard. The diagram looks like this (I don't know if this uploaded right) So really, all I am trying to do is tell if...
  20. C

    Evaluating $$\alpha \longrightarrow \beta + \overline{\beta}$$ Feynman Diagram

    If I have a scalar field $$\alpha$$ and a Dirac particle $$\beta$$ and its anti particle $$\overline{\beta}$$ such that the three couple to give a vertex factor of $$-ik$$ when evaluating the Feynman diagram (where k is an arbitrary constant). How do I evaluate the first order diagram of...
  21. B

    How Should Manage Be Represented in an ER Diagram for a Video Rental Company?

    I am doing a ER Diagram for a class and having a lot of trouble with a specific piece of the sentence. Anyway, here is the business requirements we are diagramming: The video rental company has several branches throughout the USA. The data held on each branch is the branch address made up of...
  22. S

    Help with complex loci on Argand diagram

    Hi all, I'm hoping for some help/guidance on this problem: 1. Homework Statement The complex number z is represented by the point P on the Argand diagram. Sketch and describe in words the locus of P if: i) ##|2-iz|=2## ii) ##|\dfrac{1+i}{z}-2|=2## The solutions read: i) ##|2-iz|=2...
  23. R

    Questions Regarding the Phase Diagram

    Hello I’m wondering if my understanding of how different processes relate to the phase diagram here is correct. 1) If a piston cylinder assembly maintains a constant 1atm pressure on some water and the water is cooled, we would be going horizontally along the red line from 373.15K to 273.15K...
  24. Zandabyte

    Help deciphering a motion diagram.

    This is what I was able to get from the problem but it is clearly wrong and I have no idea what the right way to go about this would be. Thank you in advance for your help. Homework Equations : None available for this type of problem.[/B] 1/3:
  25. Diploria

    Quick question on Minkowski space diagram

    Consider the lower right plot in this picture (or many similar ones). I interpret the angle of the t' axis with respect to the t axis as: From the point of view of the stationary observer, all progress in time for the moving observer will be accompanied by the latter's spatial progress (to the...
  26. K

    What is the Correct Electric Charge Force Diagram for a Single Charge?

    I drew a force diagram of one charge with gravity downward, electric force to the right, and tension at 20 degrees left of +y. I summed the forces in the x and y directions: Fy = Tsin20° - mg = 0 T = 0.1434 N Fx = kq^2 / r^2 - Tcos20° = 0 q = 6.29 x 10^-12 C The correct answer is...
  27. P

    Problem with values for a bending moment diagram

    Homework Statement I have a 5m long simply supported beam, with supports at points 0m and 5m. There's a UDL of 10kNm^-1 from 0m to 4m. It has downward forces acting at 2m (10kN) & 4m (15kN). I need to sketch a bending moment diagram to determine the position & value of the max bending...
  28. C

    Diagram to show static electricity

    static electricity diagram Hello! I am new here! I need your help... How would I draw a simple diagram to show how static electricity is made use of in a photocopier to position the black toner where is needed. It sounds a litte bit tricky and I think how it would looks like. Thanks in...
  29. P

    What is the signal flow in this circuit diagram?

    Hey guys I am having trouble understanding this circuit. Can someone help me get through it, and explain to me what the signal is doing form start to end please?
  30. L

    MHB Free Body Diagram Solve Problem: Find Force Normal

    SOLVE THIS PROBLEM And this is the figure I need the free body diagram because the book solve this problem in this way the force normsl is n = fcosx the verticall componente is fsenx = w + miuN why does the fr is vertical in this case?
  31. R

    How can I make an experimental Nyquist plot using my data?

    Homework Statement I'm trying to make a Nyquist diagram based on experimental data obtained of the gain and phase of a high-pass RC filter which has the transfer function: ##\frac{V_{out}}{V_{in}}=\frac{R}{R+1/(j \omega C)}=\frac{1}{1-j\omega_0/\omega}## Here are the superimposed...
  32. P

    How can I create a Sankey diagram for wave power?

    Homework Statement I need to be able to draw a Sankey diagram for wave power, help? Homework Equations The Attempt at a Solution
  33. N

    Pressure diagram labelled incorrectly?

    Homework Statement At the point specified in the diagram, isn't pressure coming from all directions, namely gauge pressure. So wouldn't some of the gauge pressure be used to counteract the effects from the atmospheric pressure. Doesn't this mean the equation Ptotal = Patsurface + Pgauge is...
  34. BrainMan

    Confusion on a diagram in a scientific journal

    Homework Statement I am not sure if this goes here but I am doing research on solar panels and am confused on some of the physics in a particular scientific journal I am reading. More specifically I am having trouble with the equations on the last part of page 1 and the entire second page. I...
  35. Greg Bernhardt

    What Are the Rules for Drawing a Free Body Diagram?

    Definition/Summary A free-body diagram is a diagram of all the contact and non-contact forces acting directly on a body (in a non-inertial frame, that includes "fictitious" forces). Indirect forces (such as the weight of a different body), and internal forces, should not be shown...
  36. P

    Three-Line Diagram: What is It?

    Hi all, is anyone familiar with the term 'three-line diagram'? I've been searching and googling up the wazoo, but all I've uncovered so far is that "A three-line diagram is more detailed than a one-line diagram," which is frustratingly vague. I'm guessing that this term is an alternate one for a...
  37. V

    Exploring the Circuit Diagram of Air: Capacitance and Zener Breakdown Voltage

    Hello, as just a fun curiosity, I was pondering what the circuit diagram of a square inch of air would look like. I figured I would ask the folks here what you think it would look like... I am thinking it would have a certain amount of capacitance, and maybe a very large zener with the...
  38. Hepth

    Feynman Diagram setup for 4-fermion interaction loop

    If one has a 4-fermion vertex, like in Fermi theory : ##G_f (f_1 \Gamma f_2)(l_1 \Gamma l_2)## And you are calculating a one-loop diagram where you have the diagram of : f1-> f2,l1,l2 -> f1 (used for dispersive/unitarity approach) Where in the end you'll use Cutkosky rules to calculate...
  39. K

    State Machine Diagram for a Telephone?

    Hi, I'm not from Software Engineering background and I'm trying to learn State Machine Diagrams on my own by looking at resources on the internet. I'm trying to come up with a State Machine Diagram for a telephone but I can't seem to find an answer on the internet. Can you help me by telling...
  40. O

    Understanding and Creating an O-C Diagram

    Hello, I am doing research and I was told that I need to create an O-C diagram for an eclipsing binary. Unfortunately, I haven't been given too much instruction on how to do this. Right now, all I have are minimum times of light, the period of the system, and cycle numbers. I know that O-C is...
  41. L

    Physics Fundamentals : Free Body Diagram

    Homework Statement A 5.0kg mass is suspended from the ceiling. A horizontal force F is applied to hold the string in position as shown http://i.imgur.com/ZdR72ff.jpg Determine the reading of F on the spring balance by using a scale diagram Homework Equations None The Attempt at...
  42. S

    Fully restrained beam moment diagram

    Homework Statement Find the shear and bending moment diagram for a fully restrained beam with a length of 5m, a uniform distributed load of 1kN/m from x=0 to 2m, a point load of 1kN at 2m, and another uniform distributed load of .9kN/m from x=2, to x=5. Homework Equations The...
  43. J

    Calculating work done on a gas- Adiabatic process PV diagram.

    Homework Statement As per attachment. Part iii How would you do this question by integrating the work? Homework Equations W = - ∫P dV PV^gamma = constant The Attempt at a Solution So I integrated the work with P= constant/ V^gamma and came up with this: W = constant* (...
  44. $

    Silvaco Atlas export Energy Band Diagram programatically

    Hi, I perform my post-processing and analysis of data from silvaco in MATLAB and would like to export values from the .str file to a file that can be read easily into matlab. Does anyone know of a way to do this programmatically? I can do it in tonyplot, but I've got everything else scripted...
  45. I

    What determines the starting point of a bending moment diagram?

    In the bottom left, why does the BM diagram start at -4kNm rather than 4kNm? I understand that if you make a cut you yield this result but if you don't make a cut how would you know whether it starts at -4kNm or 4kNm? Thanks
  46. G

    Exploring the Locus of Points in an Argand Diagram

    Homework Statement Find the locus of points which satisfy 2π*|z −1| = Arg(z − 1) where |z −1| ≤ 2. Homework Equations n/a The Attempt at a Solution I know that |z-1| ≤ 2 is the 'inside' bits of a circle center (1,0) with a radius 2 After that I get confused surely with |z-1|≤2 then...
  47. B

    MHB Circuit Diagram: Voltage & Current Calculation at Y & Z

    For the circuit shown below, determine i) The voltage (V) at points Y and Z. ii) The current through each resistor. For (i) do I have to split into series and parallel?
  48. B

    How to Calculate Voltage and Current in a Circuit with a Diagram?

    Homework Statement For the circuit shown below, determine i) The voltage (V) at points Y and Z. ii) The current through each resistor. Homework Equations V=IR, I=V/R, R=V/I The Attempt at a Solution For (i) do I have to split into series and parallel?
  49. F

    Drawing an Acceleration Diagram for Θ=30°, Velocity of b=0.9m/s, Radius =0.15m

    Hey guys i done every thing and i just wan to know how to draw the acceleration diagram, thanks. Homework Statement Θ=30° velocity of b=0.9m/s radius =0.15m Homework Equations The Attempt at a Solution in the attachment question 3
  50. S

    A light-cone diagram in Gnuplot

    Hello, If you visit this link (http://maia.ice.cat/cosmocomp/bcn_workshop/woodward.pdf ) you will see in page 3 a light-cone diagram! How is it possible to generate it in GNUPLOT? Note: i have a "data.file" with points and the columms are: 1) z (redshift) 2)Right ascension (RA)...
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