Path Definition and 1000 Threads

Hey everyone, Last summer I had realized that my interest in science had spiked dramatically, and more specifically, the cosmos and physics, so I decided to research the available colleges around me and decided to start off at a community college to take the entry level courses to see if my...

1. The problem if {\vec{V}=ky\hat{i}+kx\hat{j} m/s, find the equation of the path

1. The problem if {\vec{V}=ky\hat{i}+kx\hat{j} find the equation of the path

Homework Statement Here is my problem : so far I've solved the line integral but I don't know what is the condition that must be met in order to be independant of the path given. I found the line integral to be: 27/28

Homework Statement Hello, I have a quick question about the following problem F = (2y+3)i+xzj+(yz-x)k and straight lines from (0,0,0) to (0,0,1) to (0,1,1) to (2,1,1) Considering C1 is the line from (0,0,0) to (0,0,1) C2 is the line from (0,0,1) to (0,1,1) and C3 is the line from (0,1,1) to...

What is meant by phase of a wave? I can't get a grasp of it especially after knowing that in an em wave ,the magnetic and electric fields E and B respectively are in phase , aren't they time varying and perpendicular to each other? Doesn't changing the inclination affect the phase ? Also,the...

Homework Statement Homework Equations W= ∫F.dr The Attempt at a Solution I'm fairly sure I've done the right thing, however my lecturer hasn't uploaded any solutions to any of these problems (which is ridiculous - how am I supposed to learn if I don't know when I'm right or...

Hi guys, I have a few questions regarding Feynman's formulation of quantum mechanics. Given the propagator K(x',t';x,t), when is this propagator equal to: $$K(x',t';x,t)=Ae^{\frac{i}{\hbar}S_{cl}(x',t';x,t)}$$ Where S_cl is the classical action evaluated along the classical path of motion...

What are the variables I need to take in account if I want to calculate shadow path and size? I will try to simplify my questions. I have a 2d circle (radius: 28) which means the size of the circle (in box) is 56x56 at specific point (lets say 300,300). I tell the 2d circle to go in specific...

In Srednicki's QFT textbook, equation 9.6, he writes: Z[J]=e^{i \int d^4x \, \mathcal L_I\left(\frac{1}{i}\frac{\delta}{\delta J(x)} \right)} \int \, \mathcal D\phi e^{i \int d^4x \, \mathcal [\mathcal L_0+J\phi]} \propto e^{i \int d^4x \, \mathcal L_I\left(\frac{1}{i}\frac{\delta}{\delta...

Homework Statement A time t = 0 an electron enters a region of uniform magnetic field B = 0.010 T and has kinetic energy of 6.40E-16 J. It goes through a half-circle, exits the field and then accelerates across a gap with a potential difference of 2000 V, increasing in speed. It then hits a...

please,I have exams on Tuesday and I need someone to solve this question for me so that I will pass my exams. Your helps will be kindly appreciated.

Hello All, My background in physics is very basics. So I apologize in advanced if a make silly logical or empirical error. As shown in the attached picture, for the sake of simplicity, imagine the picture is a 2D world. Let's say we are being from 3D world looking directly at this world...

I was wondering if there is a mathematical difference between the RMS free path and the mean free path of molecules in an ideal gas. For example, When I calculate the mean free path, I use use the average velocity and the scattering rate which is a function of the average velocity. I then...

Homework Statement A double slit experiment is set up using a helium-neon laser (wavelength 633 nm). Suppose we add a small piece of glass (n = 1.50) over one of the slits. Then, the central point on the screen is occupied by what had been the m = 10 dark fringe. Determine the thickness t of...

Thermodynamics -- change in internal energy of the system for the path Homework Statement A system comprising of an ideal gas is taken from State a to State b, as shown in Figure 9 below, along th epath acb. 200J of heat flows into the system and 80J of work is done by the system along the...

Obtaining the Equation of a Path I'm working on a project for myself in SolidWorks which involves a scissor-type mechanism. The bottom ends of the linkages are attached to disks that are free to rotate around the central hub where all the gears are attached. On the other side of the hub is...

Problem: Three small snails are each at a vertex of an equilateral triangle of side $a$ units. The first sets out towards the second, the second towards the third and the third towards the first, with a uniform speed of $v$ units/sec. During their motion each of them always heads towards its...

Typical introductions to path integrals start with asking for the value of \langle x_1,t_1 | x_2,t_2 \rangle. This is usually interpreted as the probability amplitude of observing a particle at x_2 at time time t_2 given that it is located at x_1 at t_1. But is this so? I am having trouble...

Searching for 'Conservative fields intuition' comes up with a thread pretty high up on the list with this question. Which was closed years ago. " Hi I'm now reading about Vector fields, everything is clear and intuitive for me as curl divergence ..ect , except one simple thing that I'm...

Homework Statement here's the question, is my concept correct? the ans is 9.86 cm, but my ans is 13 cm, can anyone tell me which part is wrong? Homework Equations The Attempt at a Solution

Hello, I have been trying to find an equation to represent the observed angular velocity of any object traveling in a straight path x and y distance away from where its being observed, along with the moving objects velocity. My problem is that I am getting a differential equation that in its...

Hi guys, I'm currently studying Beng Electronic communications engineering. I'd like to know more about the careers of electronic communications engineers. What typical job would I expect to get? The problem is that I really enjoy electronics but have no idea what I'll be doing at a...

i know that in lap winding the number of parallel path are equal to the number of poles, and in wave winding its always two. but where is that parallel path..? , i just don't get it. i'm new to this subject. thank you.

I'm 17 yrs old in high school and I'm not positive on what i want to go to school for. I'm on the fence about a diesel tech. and something in the aerospace field. As for aerospace, I thought of that as a choice because it seems like the more I see airplanes the more I get interested in them. I...

I would like to know the calculations regarding tracing of the path followed by a car during turning process. i have the following details , kindly do tell what other information is required and how the equations are formed. front wheel track - 1559 mm rear wheel track - 1605 mm...

So, consider an average shorted capacitor connected to an alternating current power source. This capacitor has a certain capacitance, voltage, displacement current, etc. associated with it. Assume the dielectric of this capacitor is air. Let us increase the frequency of this source. Recall that...

Hey! :o I have the following exercise: Integrate the function $f=x+ \sqrt{y} -z^2$ at the path from $(0,0,0)$ to$(1,1,1)$ that consists of the curves $C_1:r(t)=t \hat{ \imath}+t^2\hat{ \jmath}, 0 \leq t \leq 1$ and $C_2: r(t)=\hat{ \imath}+\hat{ \jmath}+t \hat{k}, 0\leq t \leq1$.My solution is...

Homework Statement A charged particle (q), mass (m) is released from a frictionless inclined plane of angle θ under influence of Earth's acceleration (g) and magnetic field (B) perpendicular to (g) and plane of motion of particle. The particle slides down distance "l" along incline and then...

A laser's beam is split and then recombined, and the two path delays are adjusted so there is destructive interference at a detector. Let's also say one of the two paths has a measurable delay over the other. Classically speaking, when the laser is first turned on, the detector would be...

Homework Statement A charge enters a magnetic field. Draw the path the charge will follow and find the radius and period of the particle's path. v=10m/s (drawn as a straight line pointing right) q=3c B=4T (points outward)Homework Equations I'm not sure. The Attempt at a Solution The...

I understand that defining the path of a joint in a mechanism comes under the category of 'kinematic analysis'. I do not understand why engineers do this,when all they need to know is the path of the piston,piston velocity and piston acceleration(kinematic analysis). Take for example this 90...

Imagine a straight line that contains both the center of the sun and the center of the earth. This line passes through a point on the surface of the Earth that is between those two points. As the Earth rotates, this point moves west, forming a kind of line on the surface of the earth. What...

Homework Statement Homework Equations The Attempt at a Solution I understand what the question is asking. Both ways I should get the same answer. I'm having trouble figuring out the mathematics behind this question.

Hi. I'm not entirely sure if this thread belongs here. I apologize in case it does not. I am currently on my third bachelor year on Physics. I have been thinking about the future lately, as I don't know what kind of job I want to have, and I feel utterly lost. I enjoy physics, and I am...

[b]1. A person going for a walk follows a path. The total trip consists of four straight-line paths. At the end of the walk what is the person's resultant displacement measured from the starting point? The books says the answer is 240 m at 237 degrees. [b] Vector A is 100m East at 0°...

Hey! :o Given the following: I have to find the shortest path from 1 to 10. I used the formula: $v(i)= \min \{c_{ij}+v(j) \}, v(N)=0$ and I found the shortest path is $1 \rightarrow 2 \rightarrow 6\rightarrow 9 \rightarrow 10$ and the cost is $7$. Is this correct?

Homework Statement An electron is at P at t=0. It is circulating in anti-clockwise direction with a constant angular speed ω along the shown(see attachment) circular path. Magnetic field at Q (CQ=2R, where R is radius of circle) will be recorded as zero at times ....? The Attempt at a...

"Path (or single particle)" Superposition Vs Entanglement Superposition "Path" superposition 1. Single photon/particle...say going through a double slit Entanglement superposition 1. Creation of two entangled photons Path superposition - 1 particle...superposition of multiple...

I'm trying to prove that a graph with the below properties has an eulerian path. 1. Graph has no self loops or parallel edges. 2. Every two different vertices u and v have an odd number of common neighbor vertices. I'm thinking about this problem for a whole day and can't manage to prove...

A particle moves along the curved path sown. if the particle has a speed of 40ft/sec at A at time ta and a speed of 44ft/sec at B at time tb, determine the average values of he acceleration of hte particle between A and B, bath normal and tangent to the path. I found the average tangent...

Homework Statement You toss a ball straight up at 7.3ms^-1; it leaves your hand at 1.5m above the floor. a) Find its velocity before it hits the floor b) Suppose ball is tossed straight down at 7.3ms^-1, what is the final velocity just before it hits the floor. c) When would the second ball...

Given a set of n things (1,2,...,n), we want to group them in clusters that contain adjacent things. For each cluster there is a cost $c_{ij}$. We are looking for the grouping in clusters so that the total cost is minimal. I am asked to write this problem as a shortest path problem. What do I...

Homework Statement Evaluate ∫F dot ds Homework Equations F = < 1 - y/ (x^2 + y^2) , 1 + x/(x^2 + y^2) , e^z > C is the curve z = x^2 + y^2 -4 and x + y + z = 100 The Attempt at a Solution I don't think Stokes theorem applies since the vector field is undefined at the origin, so I'm...

Hey, so I am trying to figure out the optical path length change of an optical fiber due to absorption. I'll post what I have so far and let me know if I have done anything wrong or if you have suggestions. so the optical path length is L' = nL (L' is optical path length, n is refractive...

Hi everyone. A little background on me. I'm just shy of my 42nd birthday with only about a semester of college courses under my belt, and that was just the starter classes thru the University of Phoenix. Way back in high school math and science were my favorite classes up until a bad experience...

"The" Classical Path, QM Path Integrals and Paths in Curved Spacetime Hey Guys! I've got an exciting question! It's been burning on my mind for years, but I think I can formulate it now. It's not so much a specific question, but rather a physical story which perhaps this thread can uncover...

Hi, I'm sorry if this is the wrong section. My Dad keeps telling me that light takes the path of most time elapsed between two points, and he remembers hearing this because it's counter intuitive. I'm a Physics undergrad myself but I can't see if and how there's any truth behind this. I've...

Homework Statement Show that the following problem is NP-complete: Given: A directed graph ##G=(V,E)##, source and target nodes ##s,t\in V## and a parameter K. Goal: Determine whether there exists a simple ##s,t##-path in ##G## of length at least ##K##. The Attempt at a Solution I've...