Diagram Definition and 1000 Threads

How to arrange/draw circuit diagram from fixed resistances to have a specific total resistance? (BTW, I am new to PF so I am just starting to know how to do things here hihi)Sample problem: 2Ω,3Ω,4Ω,5Ω,10Ω - arrange the 5 resistances to form a diagram that will have a total resistance of 17Ω.I...

Homework Statement Assume you are given the entity Person. This entity has 3 attributes: Name, Name of child, Name of parent. Now, assume you want to modify your design of ”People” database above to include additional information about types of people such as sex, and people who are parents...

In the following process flow diagram for the production of hydrogen, why is the amine column placed after 2 heat exchangers?

Homework Statement Hey guys! So basically in the question I'm given the action S=\int d^{d}x \left[ \frac{1}{2}\partial_{\mu}\phi\partial_{\nu}\phi\eta^{\mu\nu} - \frac{m^{2}}{2}\phi^{2} -\frac{\lambda}{4!}\phi^{4}\right]. I have use the feynman rules to calculate the tree level diagram with...

If a car is on top of a mountain moving with an initial velocity, will it only forces acting on it be the normal force counteracted by the force due to gravity?

Homework Statement How is he able to just swap the inverter for a NAND gate? Doesn't a NAND gate require two things? See the text on the right for his explanation [/B] Homework EquationsThe Attempt at a Solution

Homework Statement Write the momentum space integral representation for the following diagram in QED Homework EquationsThe Attempt at a Solution [/B]...

Homework Statement A mass m = 750 g is connected to a spring with spring constant k = 1.5 N/m. At t = 0 the mass is set into simple harmonic motion (no damping) with the initial conditions represented by the point P in the phase space diagram at the right. **(This phase space diagram has...

Hi, I need to make a UML class diagram for a hotel billing system then implement it in Java. I'm quite new to UML so was just wondering a few things. The scenario is: 3 different types of customer - corporate, group and individual Corporate customers are local companies employees with a...

All the youtube links are time stamped 1. Homework Statement Homework EquationsThe Attempt at a Solution I wrote it out the operator expressions each by hand and got the same result but I don't understand how he is able to just eyeball it. I'm trying to develop some intuition. a. To start...

Homework Statement The block diagram of a PM DC servo motor with current loop feedback is shown below: If Ki is adjusted such that J(Ki+R)2 >> 4KTKbL, show that the transfer function may be approximated by G(s) = (1/Kb) / (τms+1)(τes+1), where τm = J(R+Ki) / KTKb τe = L / (R+Ki)The...

How can we show one dimensional relative parallel velocities in space time diagram ? (One dimensional means there's only pozitive and negaive values of speed)

Homework Statement Bicycle with a rider applying weight to on pedal. Draw as free bodies in equilibrium. There are different situations. Homework Equations N/A The Attempt at a Solution So I am working on part a). 1. I believe it is only referring to just the pedal, chain, and the two...

Homework Statement Draw the output Q of the JK Master-Slave Flip-Flop Homework Equations Master works at the rising edge, while and the Slave works at the falling edge. The Attempt at a Solution http://s13.postimg.org/j5ldpmw9i/20150109_095656.jpg

Homework Statement The question is to sketch for values of t = 0, t =0.25, t = 0.5, t=1 and t = 1.25 for the wave equation Ytt = Yxx in the infinite domain with initial conditions y(x,0) = f(x) = \begin{cases} 1 & \text{if } 0 ≤ x ≤ 1 \\ & 0 (otherwise) \end{cases} Yt(x,0) = 0 Homework...

Homework Statement The question requires viewing the circuit diagram to start. An image is attached, it can also be viewed here (http://imgur.com/6Q0DCQ9). The questions are: a) Calculate the equivalent resistance ##R_T## of the 4 ##\parallel## 8 ohm combination. b) Redraw the circuit with...

Homework Statement Hi please help me with these 2 ray diagrams... the questions is as stated in the attachment..i have no idea where to start drawing and whatever i have drawn is wrong for both qns.. thanks a lot experts! Homework EquationsThe Attempt at a Solution

Hello! I'm working my way through K&K (First Edition) and have encountered a slight dilemma. On page 26, I believe there may be a missing diagram. There is a reference made to a diagram which reads: Using the angle Δθ defined in the sketch, \left |\Delta A \right |=2A sin \frac{\Delta...

Can we add another time axis to Einsteins space time diagram? Since space and time are one thing they can be represented by one axis. The other axis can be a cosmological constant average axis. By adding this extra term can mass and energy be measured by a time scale relative to the expanding...

What conditions are necessary if it's to be possible to make a Penrose diagram for a 3+1-dimensional spacetime? It seems that rotational symmetry is not necessary, since people draw Penrose diagrams for Kerr black holes. If you don't have rotational symmetry, how do you know what 2-surface is...

Hey Guys, so i was reading Hawking&Ellis a bit and still encounter always problems with the Penrose-Diagrams. Looking at the Penrose-Diagram for the rotating Kerr-Black hole (just one illustrating picture at the end) i come up the following question: Why are there TWO regions III and III ? In...

May I pose a question concerning impedance matching and Smith diagrams?

Homework Statement A reversible engine contains 0.20 mol of ideal monatomic gas, initially at 600 K and confined to 2.0 L. The gas undergoes the following cycle: Isothermal expansion to 4.0 L. Isovolumic cooling to 300 K. Isothermal compression to 2.0 L. Isovolumic heating to 600 K...

Hi there, I am struggling to understand how moving the summation (with H3) to before G1 will cause H3 to have to be divided by G1. I tried writing down how the equations would work to make sense of it but I still can't see how it works out. Please can someone explain this to me? Thanks, Laura...

1. Relevant information This is a two-block-system on top of each other to the right side of a wall, both attached with springs that are also attached to the wall. A force is applied on the bottom block to the right direction, frictions occurred on both bottoms of the two blocks. Here is the...

I noticed that the ray diagram for the "how the compound microscope works" and "how the telescope works" is wrong in my government sanctioned physics textbook(and countless other books and websites!) The diagram printed was this- Name: Physics Standard XI Printed by: Maharastra State Board of...

How does an hourglass's weight change while sand is dripping in it? (better be in a diagram)

guys for the critical frequency for low pass is it the following: 1/2pi* 2.2*10^(-6)*100k?

Hello ! In the book Quantum Field for mathematician, there is this Wick diagram as an example to understand how to compute the symmetry factor (I am sorry, I draw it with paint...) This is about a hermitian field interacting with a complex field. The book says it has a symmetry factor of 2...

Water flows in the horizontal pipe shown in Fig. 13-6. At A the area is and the speed of the water is At B the area is 16.0 cm2. The fluid in the manometer is mercury, which has a density of What is the manometer reading h? My attempt: I used A1V1 = A2V2 to find the speed at B which is 3.125...

All degrees are measured from the positive x-axis. FG = Force of gravity FN = Normal force FT = Force of tension Problem: A skier is being pulled up a 15° incline by a rope. I'm solving for FT. The only forces acting on the skier are FG, FN, and FT. Attempt at a solution: Initially, my...

< Moderator Note -- Thread moved from the technical math forums (that's why the HH Template is not shown) >[/color] 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...

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...

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!

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...

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...

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...

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 =...

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...

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...

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?

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...

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...

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...

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

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...

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...

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...

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...

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...