Diagram Definition and 1000 Threads

Here is the question: I have posted a link there to this topic so the OP can see my work.

It ran in Science News after much calculation the idea shape for a column to resist buckling was solved. It is a slight barrel shape.

Homework Statement Describe the forces acting on the shaft AB Homework Equations The Attempt at a Solution I've ignored the bearings for now... but I know each of them has 2 forces, 1 in the radial direction and the other in the tangential direction ... Anyway, this is my diagram (sans...

Homework Statement Hello everyone, I am having difficulty with something that should be very basic knowledge for most engineers here. I cannot see how this trigonometric relationship is being made from the phasor diagram I attached... I remember the SohCahToa rule, but it's just not...

I was curious if anyone is aware of anything resembling a mathematical map, or learning tree. By this I mean a diagram that illustrates the sequence in which one must learn particular topics. I ask because I find myself encountering topics (today it was finite element method) and clicking the...

I would like to have a nice picture/simulation of the Earth - Apophis encounter on April 13th 2029. I found this applet http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=aPOPHIS;orb=1;cov=0;log=0;cad=0#orb but it seems to produce too great error for the time of encounter - the minimal distance much...

I am studying QFT from Srednicki's book. Let me ask a question about symmetry factor from this book. Let, for specific values of V and P from eqn (9.11) we get some terms. One of them is a disconnected diagram consisted of two connected diagrams C_1 and C_2. The disconnected diagrams...

Homework Statement I was creating a stress-strain curve for a soft aluminum alloy (as stated in problem) and was looking to find the ultimate stress and ensure my units were all okay. I have attached a screenshot of my graph. And a separate screenshot with the formulas. Homework...

Let's consider a stationary ball lying on the floor. The weight of the ball acts downwards and the normal reaction acts upwards. They are of the same magnitude but not of the same type. So normal reaction is the reaction to what, if not weight ?

Homework Statement Sketch the locus of points in the argand diagram defined by z: arg (z-1) - arg(z+1) = ∏/4 Homework Equations The Attempt at a Solution By simple geometry i worked out that at a point in the x-y plane, the angle subtended from that point to -1 and 1 must...

The answer I got was: If I'am wrong please explain the correct solution and explain your reasoning thanks sarah (Sun)

hello guys, Its my first question here i hope i will have enough help i am the newbie here but i like this website already :) my question is plot diagram of a 3phase voltage inverter for asynchronous motor driving. i tried to find it but couldnt. thank you from now :)

Hi all, This is not homework or coursework. I am not sure whether this question would be classed as homework or coursework because it is neither. I am using the AQA Physics A AS textbook and attempting exercise 12.2 on page 177. In I am stuck on question 4 and I have absolutely no idea on...

Hey I have to find a diagram that shows the difference in wavelength intensity between a blueshift and a redshift. I've searched for a while but all the diagrams I find are pretty awful. If anyone knows any that decent ones would you mind linking it below? All I can find is the colour...

Homework Statement Reference the Cu-Zr phase diagram. If you make the alloy CuZr and heat it to 300°C, what percentage of the material will be Cu10Zr7 and what percentage of the material will be CuZr2? Homework Equations Phase diagram attached. The Attempt at a Solution I used the lever...

Homework Statement A man is on an elevator - Draw a FBD of the man if the elevator accelerates upwards - Draw an FBD of the man if ele. accelerates downwards Homework Equations F=m*a w=mg The Attempt at a Solution My FBD For the first one "elevator accelelartes upwards" means...

Suppose we have a spacetime diagram like this: Red lines indicating light travel from the moving object to the observer. Object is moving at the speed of 0.8c. At this speed we have: Lorentz factor 1/√(1 - v2/c2)=1/0.6=1.66(6) Relativistic Doppler effect √((1 + β) / (1 - β)) = 3 My question...

Homework Statement The potential difference across a circuit is given by the complex number V=40+j35volts and the current is given by the complex number I=6+j3 amps a) sketch the appropriate phasors on an Argand diagram. b) Find the phase difference between the phasors for voltage V and...

Homework Statement Consider the following PV diagram of one mole of a monatomic gas: The units are in atm and litres. Find the change in internal energy, heat, and work for all 3 processes and for the cycle as well. Homework Equations PV = nRT ΔU = Q - W ΔU = (3/2)*R*ΔT Q = (5/2)*R*ΔT...

Homework Statement Can you check if the values and labels are correct Homework Equations The Attempt at a Solution

Consider a situation where we want to combine spacetime diagrams of Alice and Bob, where Bob is moving at a speed of 0.4c to the right (positive x direction). If we draw Alice’s xA axis as horizontal and tA axis as vertical, answer the following questions. What is the equation, written in...

I have no doubt that this diagram has a specific name, and that it appears in Geometry texts. I don't now the name, or what text it may be in. It's plane Geometry, and it shows a definite relation of the radius of a Circle to the Line of it's Circumference. I may tie it into the thread on my...

Are the two circuits attached the same? "Circuit diagram" is the original schematic file, and "circuit" is the one I tried creating online. Are they the same? https://www.physicsforums.com/showthread.php?p=4384222#post4384222 I am doubtful of the overlapping of the wires and also the...

Homework Statement Refer to the attached binary phase diagram. Substance A has a melting point of 600 °C and B has a melting point of 1200 °C. A mixture of 70 weight percent B and 30 weight percent A is held at 950 °C for a long time - long enough to reach equilibrium. a) Determine the weight...

Hi all, I'm doing an engineering course and have a question that's kinda stumped me. I'm not going to post the actual question as i prefer to try and work it out myself...I've managed everything else so far,,,just this one is proving a bit of a noggin-scratcher...I just need a few questions...

Homework Statement I am wondering how for determine the central atom's orbitals from the point group character tables described by group theory. For example CO3^-2 (D3h) Carbon's (central atom) p-orbitals are described by a1''+e'. The s-orbital is a1' Homework Equations The...

Homework Statement How do you find the contributions per atom for calculating the reducible parts? For example CO3-2 has pt. grp: D3h. From the character tables-- the first row (unshifted atoms) is: 3,0,1,3,0,1. Second row (coefficients): 1,2,3,1,2,3 Third Row (contributions per atom)...

Hi everybody! I have to solve this exercise. We observe a tournament of 2 ^ n players, which consists of n rounds. In each round every 2 players play against each other and only the winner goes to the next round. At the beginning of each round random pairings are defined, all with the same...

http://img687.imageshack.us/img687/5889/shear.png I'm having trouble drawing the shear diagram on MAsteringEngineering. I'm pretty sure the values are correct too? I got By = 10.5 and Ay = 9.5 V(x) = -2x+9.5 for the distributed load so when I set V=0, I find the x intercept to be...

hi If I understand it correctly, the hyperbolas in the kruskal diagram define locations with the same space time. Now my question is, how can I make a function out of the hyperbola solved for spacetime on one side and gravity/metric tensor on the other side? Thank you very much for an answer...

Homework Statement The figure shows a PV diagram for 2.69 mole of oxygen gas in a sealed container. The temperature of state 1 is 21 C. Pressure is Pi. What is T3 and T4? http://s74.photobucket.com/user/teysure/media/phyiscs.png.html?sort=3&o=0 my attempt at solving the solution...

Homework Statement The diagram shows two pulses, each of length , traveling toward each other at equal speed in a rope Which diagram below best represent sthe shape ofthe rope when both pulses are in region AB? Homework Equations The Attempt at a Solution The answer is the...

Can someone please break down how to do this one? I'm absolutely stumped on this one. Thank you very much. :)Use the following sets to complete the operations. Universal set = {lower case English letters; a,b,c,d…x,y,z} V = {a,e,i,o,u} S = {letters in the word “spring”} G = {letters in the word...

Homework Statement See picture. Homework Equations The Attempt at a Solution I want to know what are all the forces acting on this object. If the object is 10N , the tension force suppose to be 10N. But wouldn' there be a normal force acting between the point touching the...

Hi all Just a basic question really; I'm at university and have been tutoring someone through a couple of A level physics modules, and I'm covering some basic particle physics at the moment, which is all alright, but I've come to an issue with Feynman diagrams. Basically, for interactions...

The boolean expression I am working with is: ((ab)'(b'c)' + a'bpc') where ' is the NOT symbol. I have the following logic circuit diagram. Is it correct?

Homework Statement Hey guys, my problem is not really the end solution, but the preliminary step that I'm not too sure about. Given the following diagram: The image on the left is the given model, and the right image is my nodal element FBD, but somehow i don't believe that's correct. Can...

Homework Statement Draw a free body diagram of each object in Italics, that is in centripetal acceleration, and name the force causing this centripetal acceleration. a. Moon in circular orbit around Earth. b. Electron in circular orbit around nucleus of atom . c. Snowboarder slides over...

Homework Statement Draw the ray diagrams for a pencil sitting on the principal axis behind and in front of the focal point of a converging lens. Describe the image. Do the same for a pencil sitting on the parallel axis behind and in front of the focal point of a diverging lens.

Homework Statement A boy skateboards down a curved playground ramp. If we treat the boy and his skateboard as a particle of total mass m = 25:0 kg, he moves through a quarter-circle with radius R = 3:0 m. He starts from rest at point A and there is no friction. (a) Find his speed at the...

1. First of all, a block diagram is given where x(t) is the input and y(t) the output.The y(t) is asked when given the h(t) and x(t).We have in parallel h(t) and δ(t-1)*h(t) and those 2 go through a summer (the second one with minus and the first one with a plus) and give y(t). 2. I know from...

Hi, Could someone tell me if the following orbital diagram is correct for ozone? I added the bonds and lone pairs in color. Thanks in advance.

how to find displacement in vector diagram? My homework question states : "Mr. Hinsley walks north 252 m, east 512 m, south 35.5 m and finally west 256 m. What is the total distance traveled? What is his displacement?" I got that the total distance = 1096 m However i am having trouble...

Calculate the number of elements in A1 U A2 U A3 if there are 97 elements in A1, 997 elements in A2 and 10098 elements in A3 in each of the following situations: (a) The amounts are pairwise disjoint, i.e. , too . (b). (c) there are 10 elements in common for each pair of volumes and 4...

I need to determine what type of covalent bond SiC2 (silicon dicarbide) and so creating the lewis dot diagram is helpful. I know I have 12 electrons available but I can't seem to draw it :/

Hey PF, I'm just being stupid today, because I can't figure out the way HR diagram is constructed, hope you guys can help. So suppose that you complete an observation in several different filters, and you need to work out the luminosity and temperature for each object in your field of view...

The attached image shows a diagram of the problem. I am trying to calculate the Compressive force in the piston (B). Would the methods shown work for finding the Comp Force? Thanks

A hand supports two books, ma and mb, with ma on top. The hand accelerates the books p and to the right, with a pushing force directed 64° above horizontal. Assuming the upper book does not slip, draw a free body diagram for each book. My attempt:

Hi All, I am an old dog, and rusty propeller head. I am having the most difficult time figuring out the forces on a pulley system I am working on. Can someone please review my sketch and tell me if I am even close. I would accept any suggestions and direction. Much Obliged -Steve

Homework Statement I have found the question I am having trouble with here: http://www.chegg.com/homework-help/questions-and-answers/block-mass-m-rest-surface-incline-adistance-h-10cm-base-height-incline-ish-50cm--coefficie-q218123 Homework Equations See below The Attempt at a Solution After...