Diagram Definition and 1000 Threads

I am by NO means an electrical engineering student, so please explain it to me like I'm 5. My friend sent me a circuit diagram and I don't know how it works/what it means, but basically I want to know if it's possible to charge 2 batteries at once instead of 1, using the same mechanism. If so...

I am a little confused about how to construct a force diagram for a suction cup, like a plunger, as it is stuck to a wall. First, I know that the cup is not accelerating, so the gravitational force pulling down on the cup has to be met with an equal but opposite force vector pointing up...

I was trying to draw a space-time diagram representing two objects traveling through spacetime, me and the planet Earth. At first I thought I would just draw two straight lines heading upwards some distance, x, apart, seeing as my position relative to the center of the Earth would not be...

if in a solid there arent no states with same energy then why energy band vs location diagram is flat?

Hi everyone, sorry if this is not the right place to post that question but I'm new to this forum, i'll delete if necessary. I am currently trying to learn QFT from Matthew Schwartz's "Quantum field theory and the standard model", quite clear during the first chapters, but i have been...

Homework Statement When a force of 2 lb is applied to the handles of the brad squeezer, it pulls in the smooth rod AB. Determine the force P exerted on each of the smooth brads at C and D Homework Equations ##\sum F_x=0## ##\sum M=0## ##\sum F_y=0## The Attempt at a Solution I drew a free...

Homework Statement I'm stuck on question A4 that is linked below. University won't provide me with any solutions. I have a TKP resit exam next month. Homework Equations dU=dQ-PdV The Attempt at a Solution Internal energy is equal to heat flow plus the work done. Work done is 0 because it's...

Homework Statement Two ropes are connected to a steel cable that supports a hanging weight as shown in the figure. Draw a free-body diagram showing all of the forces acting at the knot that connects the two ropes to the steel cable. Draw the force vectors with their tails at the knot. The...

Neglecting drag, I'm trying to understand how a wheel driven by a motor on a level surface rolls without sliding and experiences constant velocity. I'm trying to construct a free-body diagram. The wheel has a weight and a normal force acting on it in the vertical directions. The sum of...

Homework Statement 1.The maximum energy (per unit volume) that can be absorbed by the steel alloy without sustaining permanent deformation is _______ lb/in^2 1.4. The maximum energy (per unit volume) that can be absorbed bythe steel prior to fracturing is _______ kip/in^2. . Homework...

Homework Statement In the picture, I am confused with the sign of the moments. When taking moments about D, the moment due to the 100N is taken as positive, but when they take moments about B, its negative. Homework EquationsThe Attempt at a Solution Shouldn't both cases be negative since in...

Homework Statement A mass is at rest on a spring on an inclined plane. Which way would I draw the force of friction on a force diagram? Homework Equations Fnet=0 F=-kx The Attempt at a Solution It could point either up the incline, or down the incline. [/B]

Homework Statement I am trying to find the current across Rg. I do not understand the answer provided Homework EquationsThe Attempt at a Solution Am I supposed to add the two voltage sources and then continue?

I started a thread previously (https://www.physicsforums.com/threads/time-dilation-happens-on-moving-frame-but-which-one.814622/) around this concept but it got closed by one of the staff after helpfully pointing me to...

Homework Statement :[/B] For the decay of the ∆+ → n + π+, sketch an appropriate quark-level Feynman diagram. State which interaction is responsible for this decay. 3. The Attempt at a Solution This is more of a question to see if I'm doing it right more than anything. The first Feynman...

I've seen this a few times now, but it's not quite sinking in? How are the left and right sides of that 2-side BH Penrose diagram disconnected but share the BH? I keep thinking you could go around the black hole. Trying to think of a metaphor that correctly captures my confusion. Picturing a...

Homework Statement I have got 2 questions like this and I'm struggling any help would be much appreciated please. Thanks Homework EquationsThe Attempt at a Solution

Hope this is posted in the right place: Determine the total current in the attached diagram R parallel = 1/9.7 + 1/43 = 0.366^-1 = 2.98ohms R series = 4.3 + 7.4 = 11.7ohms R total = 2.98+11.7=14.68ohms I=V/R = 30/14.68 = 2.04A The answer given is 4.67A, what am I doing wrong? Thanks, Devon

Can you explain why the free body diagram of each members are as shown? I kind of understand why the FBD of the member on the left is drawn as shown. But the FBD on the right is confusing, Why does it have a component in Y (upward) direction? thanks!

Homework Statement Based of a survey from 500 people come up with this: 130 people prefer spinach 100 people prefer broccoli 50 people prefer carrot 10 people prefer spinach and broccoli 12 people prefer spinach and carrot 5 people prefer broccoli and carrot 15 people prefer all 3 of them A...

For example, a 1-m bar fixed to a wall holding a weight of 100 N, like this: How will the free body diagram of the second case different from the first?

This is what we have been given in class: I'm a little confused as the electron seems to emit two gamma rays? I understand that the process can't occur if there isn't interaction with a nucleus due to conservation of momentum. Please could someone confirm that the top gamma is the initial...

Homework Statement I need to be able to sketch Nyquist diagrams for transfer functions. I spent a lot of time but I cannot wrap my head around the idea of mapping the GH(jw) in the complex plane. Let's consider the following example for this question: GH(s) = \frac{4} {s(s+2)^2} 2. The attempt...

Homework Statement Where $$v = y - bu$$ It's given that the transfer function is $$h(t) = b u(t) + v(t) = b \delta(t) + e^{at}b \mu(t)$$ Homework EquationsThe Attempt at a Solution I can't seem to figure out how the impulse response above was found. I understand that the impulse response is y...

Homework Statement In our science class, we had to draw a free body diagram of an ice skater. The ice skater pushes against a force plate and that results in her skating in the other direction. (Newton's third law of motion). We have to use Newton's three law of motions to explain this...

Homework Statement Point charges q and Q are positioned as shown. If q= +1.0 nC, Q = -2.0 nC, a = 3.0m, and b = 4.0m, what is the electric potential difference, Va - Vb? **The question with the diagram is also attached ** Homework Equations V = ke (q/r) The Attempt at a Solution V =...

Supposed to represent a relativistic proton colliding with a stationary proton, leading to changes in the momentum of both and the production of a neutral pion. The pion then decays into two photons. No clue if this is right. I've never drawn anything much more complicated than...

The arrows in a Feynman diagram represent electric current. right? If this is the case then why do neutrons and neutrinos have arrows. How do they have an electric current?

Homework Statement I want to sum the forces perpendicular to the pendulum and sum the moments about the pendulums center of gravity. Homework EquationsThe Attempt at a Solution P\sin \theta - mg\cos \theta - N\cos \theta = -m\ddot x\cos \theta + ml\ddot \theta -Pl\sin \theta - Nl\cos \theta +...

I'm working on a homework problem for Statics and I'm stuck. Could someone please help?Problem: Draw the internal force (N,V,M) diagrams and include all significant figures Here is all of my work: Resulting F from W1: W(x) = W1 ∴ F2=∫02b W1dx eq (1) ⇒ F2 = W1⋅2b x1 = (F1)-1 ∫02b W1dx =...

Homework Statement VHDL code: http://i.imgur.com/UZrK1ky.pngHomework Equations B2 = B7 * A1 B3 = (B9 * B2) + (B1(1) * /B1(0) * /A1 B6 = B9 + /A1 B8 = B2 + (B9 * /A1) + (/B5 * (A1 + B7)) If Clock = 1 and rising edge on A2 then we reset B4, B5, B7 to 0. Else B4 = B3 = (B9 * B2) + (B1(1) * /B1(0)...

I am looking for some kind of a diagram, general or analytic, that shows all the different kind of Physics "Departments"-"Studies" or what you would call them, like Quantum Physics, Physics of Sound Waves, or something like that. I know it is a very general question but anything you know of...

Hello. So I have a pair of LED tail lights that are operated by 2 modules. One is for Dimming, Braking and strobe function, and the other is for Turn signal blinking. One tail light is wired to the other through a wire harness and then the wires for dimming and brake function come out the other...

THIS HOMEWORK WAS PLACED INCORRECTLY IN ANOTHER FORUM, SO THERE IS NO TEMPLATE (AND NO EFFORT) I have no idea how to tackle this. Please show me how to do these problems.

I thought the fundamental electromagnetic vertex is Why is the following diagram below allowed? The 'special' feynman diagram for compton scattering ##e^- + \gamma \rightarrow e^- + \gamma## is

Homework Statement Homework Equations None required? The Attempt at a Solution I understand that Id would be a disordered phase, Io an ordered phase and the other two are regions where 2 phases exist at the same time possible due to cholestrol. I am assuming so means solid ordered. But...

Homework Statement [/B] Homework Equations V=IRThe Attempt at a Solution I said: A>D=F>B=C>G>H=E I assumed higher resistance would lead to higher readings. However here are the answers: H=E>C=B>G>D>F>A Can someone explain to me why this is? As you can see H=E which combined gives a total...

Homework Statement Hi I need help with drawing a bending moment diagram for this structure. All joints are rigid and it's fixed to the ground. I'm really struggling with this. I initially started with the horizontal beam (statically indeterminate) and found that the moments at the ends were...

I am self learning Python and developing Communication signals concept by coding programs. But I am not sure how to develop Eye Diagram code in Python - cause I do not know the formulas / concept to do so - say I have a signal bits like - 1 1 1 0 0 0 1 1 So what formulas of concept I should...

Homework Statement . Can anybody help me to draw a T-s diagram Homework EquationsThe Attempt at a Solution Ive found out all the temperatures and entropy's but the videos I have watched don't help [/B] [/B]

Homework Statement http://postimg.org/image/5o9kcuj57/ I do not understand what the vectors W and V represent Homework EquationsThe Attempt at a Solution I know U is the tip speed velocity but I don't know about the other two

Homework Statement Beams AC and BD are light (no mass) and they're conjoined at B. Points A and D are fixed but frictionless. The radius of the wheel is R and the weight hanging on the pulley has the mass m. Homework Equations Fx=0 Fy=0 M=0 The Attempt at a Solution I'm stuck at the very...

Dear community! I watched The Big Bang Theory and watched this episode. If you click on it you would get to a homepage - if you scroll down you would get to a section called Episode Questions -> Physics Bowl. According to the newspapers The Big Bang Theory have an employee who is scientist...

Hi, I am trying to work out the forces involved at the contact points in a design of a structure over a balcony wall. I have drawn up the cross section of the situation equilibrium, with a tolerance. I want to find out what forces will be acting on the structure and the balcony wall when a...

Homework Statement There is a beam, say length L, with a force F UP on the left built-in support and a CLOCKWISE moment. The right side has a force, F, DOWN and a COUNTERCLOCKWISE moment i.e F up, cw moment -------------------------------------------------------------F down, ccw moment...

Homework Statement I have to draw a free body diagram representing the motion of an object @ a given point in time. This diagram is for section 1. It's of a 1.25 kg cart with a 0.6 kg can attached to it with a pulley-system. When the can drops, the cart begins to move. In section one, when the...

Homework Statement I am trying to understand the simplification between these two block diagrams Homework EquationsThe Attempt at a Solution I understand the 2s+1/s has been moved past the summing junction, resulting in the 2s. But I don't understand where the s/2s+1 block comes from

Tried using the template, had to put pictures because this concerns a diagram question! sorry guys! 1. Homework Statement Consider the circuit shown in the figure below which consists of a positive edge triggered flipflop with selective load capability (identified as MICK) and a level...

See attached photographs. For the car problem, I think the drag should be smaller than the forward acceleration but I'm not sure. For the Rocket question, I am pretty sure I am correct but I'm not sure why. The drag and the weight would both be in the down position.

Homework Statement A magnetic field of 0.0200 T [up] is created in a region. a) Find the initial magnetic force on an electron initially moving at 5.00 E+6 m/s [N] in the field. b) What is the radius of the circular path? c) Make a sketch showing the path of the electron. Electron Charge =...