Diagram Definition and 1000 Threads

Hello, All substances that are either in the liquid or solid state have a small vapor pressure which implies that they are always slowly (solids especially) evaporating and turning into a gas (vapor). The phase diagrams of water and carbon dioxide indicate only states (P , V) of pressure and...

Homework Statement This isn't a problem. I need help understanding a diagram and graphs from my book Homework EquationsThe Attempt at a Solution So I'm given a diagram on an AC circuit and a resistor. I am then given a graph of the potential of the resistor as a function of time, and then a...

I am currently performing failure analysis on an A356 Aluminum alloy wheel subjected to rotational loading, with a maximum load of 650 kgf and a torque of 4600 Nm. Cracks formed in the wheel after 1.3*10^6 rotations. My job is to perform a stress analysis to determine the regions of maximum...

Could someone explain how to find the net force of an object based on a diagram. For example a 2 people walking with forces labeled weight force, reactant force, thrust and drag on one image all forces are balanced which I know the net force would be zero however on the second image thrust is...

I'm studying Auto Transformer phasor diagram, and am having some doubts. I'd be grateful if someone could help me out with them. Book has equation: I understand that using Kirchoff's law we get minus sign for (I2 - I1) term, but shouldn't it be positive as per concept? Negative sign means the...

Homework Statement A lightly damped oscillator (mass, m, and spring constant,s, damping constant, b, with one end fixed) under external harmonic force (F0cosωt).(i.e., Standard mass-spring system with lubricated damper, and driven by an external harmonic force.) Since it is lightly...

Homework Statement :[/B] Sketch in an argand diagram: |z − i| = 2 Homework Equations z= a+bi The Attempt at a Solution |z − i| means that the distance from z to i is 2, however I am not sure where to put z.

Okay so I have a friend who has a 3rd grader and is 7 years old and he is having trouble completing this homework... we can't figure out how to do the problem on the 2nd page, we understand the example in the first page Page 1 Is the example page. I am going to attempt to translate to English...

Homework Statement Question: Drawn an orbital overlap diagram to represent the bonding in ammonia, NH3. Homework Equations [/B] none The Attempt at a Solution I learned that bonding occurs with the outermost s and p orbitals. For nitrogen: 1s2 , 2s2 , 2p3 For Hydrogren: 1s1 X 3. This is...

Who can make the most impressive, interesting, or pretty TikZ picture? This third challenge is to create a vector diagram. Such as used in geometric figures, or in physical diagrams with forces and velocities, or in state diagrams. For more impressive arrows, we might use the arrows tikz...

Homework Statement want to find the direction and moment of this diagram. Homework Equations The Attempt at a Solution [/B] I really do not have any idea about this question. So If someone helps, It'd be great.

Homework Statement In a school . 35 students like reading , 50 student like jogging , and 15 students like both . How many person like either reading or sports ? The ans is 35+ 50 -15 = 70 ( Ans given) but , i think the ans should be 20+ 35 = 55 only Which is correct ? If my ans is wrong...

Homework Statement It's given that the total probability of event b =P(B) If A1 , A2 ... An are mutually exclusive and exhaustive events , then probability of B = Homework EquationsThe Attempt at a Solution P(B) = P(A1) x P(B | A1) + P(A2) x P(B | A2) + P(A3) x P(B | A3) + ... P(An) x...

Homework Statement Simplify the block diagram. I uploaded a single image as it's the easiest way to do this problem. Homework Equations None at this stage. The Attempt at a Solution Please see the image.

Homework Statement [/B] A screenshot with everything given Homework Equations No idea The Attempt at a Solution No idea I'm not sure how to solve this or where to look for a solution. I was given this yesterday and have a test tomorrow. The professor has not gone over this at anytime...

Homework Statement Two cylinders, each with a mass of 10kg, are lying on an L profile. Neglect the thickness and weight of the L profile. Calculate the reaction force in b and e. Homework Equations G = mg The Attempt at a Solution So I tried to make a free body diagram of the cylinders. I...

Hey all, 2 weeks ago I created a challenge to create a geometrical diagram, like a triangle, that is somehow interesting or impressive. Now the moment of truth is here. Please everyone, give your vote! Voting will close in 2 weeks time. Let me recap the submissions.I like Serena...

This is a practical issue I've trying to resolve by understanding the physics. While I talk sailing jargon, ultimately this is a question of simple torsional forces on a body. So: In a high wind, when heeled over, my boat does what's called "rounding up"; it turns sharply into the wind -...

Who can make the most impressive, interesting, or pretty TikZ picture? This first challenge is to create a geometrical diagram, like a triangle, that is somehow interesting or impressive. We might make it a very complicated figure, or an 'impossible' figure, or use pretty TikZ embellishments...

1. The problem statement, all variables and given/known d Hi have this problem but I don't know how to represent, however I've tried. The problem says: You are designing an electric grill and you have to choose a resistance circuit between the circuits shown the figure. Consider that every...

Hi there, I have this performance task on Math and I'm struggling with this Venn diagram problem. 50 Grade 6 students were surveyed on their favorite types of kid-friendly content on Youtube. 17 liked Gaming Videos only, 6 liked Gaming Videos and How-To videos, 2 liked How-To and Comedy...

Hi. I'm reading an article about QCD phase diagram. https://arxiv.org/abs/1005.4814. I want to derive eq(20), but I don't know how. Does anyone know how to derive this?

1. The problem statement, all variables, and given/known data So I am studying for the ASOE physics test. I came across the following question where I can't really understand the answer to it: The actual answer is: http://prntscr.com/fum35c Could someone help me and explain what they are...

This Feynman diagram accompanied the announcement on the public LHCb site. How would you describe the origins of the up and down quark anti-quark pairs that that contribute to the decay of the ##\Xi_{cc}^{++}##?

I am starting a new thread as my last one was unceremoniously hijacked by those who should know better and then closed by moderators when boundaries were crossed in the hijacked thread. I am not complaining as it was an interesting diversion, but now, if acceptable, I would like to return to...

Homework Statement 1.0 mol sample of an ideal monatomic gas originally at a pressure of 1 atm undergoes a 3-step process as follows: It expands adiabatically from T1 = 588 K to T2 = 389 K It is compressed at constant pressure until its...

Homework Statement Draw the bending moment diagram the top part is the question, the bottom part is the answer. Homework EquationsThe Attempt at a Solution There is a force at the wall in x and y direction and a moment ##F_x, F_y, M_w## Sum of forces in x : ##F_x-1000=0, F_x=1000## Sum of...

Hi, I would like to ask you how to properly describe the Feynman diagram of the Vector Boson Fusion where the Higgs boson is produced. Two quarks scatters two vector bosons (that means boson W or Z) at some moment which influence each other and produce the Higgs boson. Is that right...

Homework Statement [/B]Homework Equations Mathematica The Attempt at a Solution I want to plot the diagram using Mathematica. I saw on the net there is some kind of programming needed for this. Do I need to learn programming for doing this? If yes, how to learn it?

Can anyone please illustrate highlighted part? Can anyone please explain me how invariance of s^2 is useful in characterization of events? I didn't understand the highlighted part i.e. how to determine velocity of S' relative to S?

I was studying about Crystal defects in crystals and came to know that it has huge effect on band diagram.I don't know about their specific impact on band diagram.So what are major impacts of crystal defects on band diagram.?

The images have been taken from page no.74,75 and 76, special relativity , A.P.French,1968 I understood that A1' and C1' are not simultaneous in S -frame. But I don't understand the principle on whose basis it is claimed that A1' and C1' are simultaneous in S' -frame. Here, the simultaneity is...

Homework Statement Hi guys can someone tell me if I am wrong, or missing reading this question. For part a I need to draw a PV diagram now it states that is is being expand isothermally yet when I look at the pressure it dose not change, which is confusing me beacuse it dose in a isothermal...

Hey everyone, I have been doing some research in regards to floating an object, and possibly have it rotate. I am thinking magnetism is the way to accomplish this, but if anyone else knows another method I would love to hear it. I created a simple diagram on what I am trying to accomplish...

Homework Statement Draw the ray diagram of the case of a diverging lens where both object and image are virtual, that is ##f<0## , ##p<0## with ##p<f## Homework EquationsThe Attempt at a Solution I did not find this particular case of ray diagram in any textbook so I would like to know where...

Hello to everyone, I am an undergrad mechanical engineering student. Currently in 4 semester. I have this one major problem. I cannot memorize facts and diagrams. We have this subject, production technology, which consists of lots and lots of facts and for me an overwhelming amount of...

Homework Statement Understanding the free-body diagram of a bead on a circular hoop. I am calculating all forces on with x and y direction and a little confused. Why is sin*angle_x and cos*angle_y reverted in this? Usually i go sin with y and x with cos. Why is the force n=mg/(cos*beta) and...

Hello, I noticed something peculiar when looking at the Minkowski Diagram and I'm not sure how to interpret this. Let observer A be the reference frame for the diagram and B someone who travels with respect to A. The red line is the displacement of light over time. The blue, yellow and green...

Hi. For a state of nitrogen in which temperature is higher than the critical temperature the state is presented on a different curve. I do not remember any curve for superheated region. Source: Introduction to Engineering Thermodynamics by Sonntag/Borgnakke. Thank you.

When a gas in a closed system is compressed, should the graph always be non-linear? If T is constant ie if the process isothermal it is clear that it should be so but I am not very sure that if the graph can be horizontal. If T decreases might not it be horizontal? Thank you.

Homework Statement Write the shear and moment diagram equations and graph them. Homework EquationsThe Attempt at a Solution I attached my attempted solution in a pdf (I know the last section of the moment diagram is supposed to be parabolic, I accidentally drew a straight line instead). I...

Hi PF I am given the ODE ##\ddot{\theta} +q\sin\theta+\mu\cos\theta=0##, where I introduce ##x_1 = \theta## and ##x_2=\dot{\theta}## to yield$$ \dot{x_2}=-q\sin x_1-\mu\cos x_1\\ x_2=\dot{x_1} $$ subject to ##x_2(0)=x_2(1)=0## and ##\int_0^1\sin x_1\, d t = 0##. I then plug this system into...

I've made a Interative Minkowski Diagram Tool, http://divykjain.github.io/IMD You can add events, connect events and add world lines. Lorentz transformation for moving frames also present. I've added support for frame velocities equal or greater than light speeds(but the animations are a mess...

I posted this in the engineer / comp science thread, but I've had no one reply or help. I really could use some guidance and I don't know where else to post. Homework Statement I am tasked to create a PV Diagram of a Carnot Engine Cycle. I must find pressure, volume, Q, W, ΔU, and ΔS on all...

Homework Statement How to show a block diagram can be simplified to a standard first order form for the diagram shown in the image attached and the question is shown in 1.a Homework Equations Standard first order form K/(1+tD) where K gain and t is time constant The Attempt at a Solution...

Hi, What is the effect of the load cycle frequency on the SN curve (Wöhler curve)? Especially when the frequency matches the natural frequency of the component/material? Instinctively, I would think that at the natural frequency the number of load cycles until fracture is lower than at any...

Homework Statement The Equation of State and the expression for the entropy for a sample of salt water is given by: V = V_{0}(1 + \beta(T - T_{0}) - \gamma(P - P_{0})) S = S_{0} + C_{v}ln(T - T_{0}) + \frac{\beta}{\gamma}(V - V_{0}) where the subscript 0 denotes a reference state, the...

Hi, I've been learning about gyroscopic precession recently and I feel like I get it. I understand that when the flywheel of a gyroscope is spinning its angular moment plus the angular moment created by the torque from the force of gravity makes it turn. But I were thinking about the forces in a...

Homework Statement In an effort to rev up his class, Mr. H does a demonstration with a bucket of water tied to a 1.3-meter long string. The bucket and water have a mass of 1.8 kg. Mr. H whirls the bucket in a vertical circle such that it has a speed of 3.9 m/s at the top of the loop and 6.4 m/s...

Homework Statement Hi, please see the attached file. I am trying to find the force as illustrated in the diagram. Homework Equations [/B] The Attempt at a Solution I've found the force for the 4deg beam and therefore the horizontal beam however I am unsure how to take into account the...