Components Definition and 911 Threads

Is E22.3 N the same as ( 22.3 east of north ) ? Is it This angle | / | / | / | / -----------------x or this one | | | | |_____------- this angle ----------------- the question is " A wind with a velocity of 40.3 KM/H blows [E22.3 N]. What is the north component of the velocity in Km/h? I...

Is there any website that already has 3-D models of steam generators, turbines, reactor vessels, cooling towers, or containment vessels? I am trying to develop some models so that I can rapid prototype scale model nuclear power plant components. The reactor will hold water and will be pumped...

I'm supposed to find the currents flowing through the circuit. While loop analysis is pretty easy, converting a bunch of complex numbers back and forth can get complicated fast. I'm not asking for the exact answer, but please look through the solution to verify if my working is correct. Many thanks.

Homework Statement A Gaussian surface in the shape of a cube has edge length 1.14 m. What are (a) the net flux through the surface and (b) the net charge (in C) enclosed by the surface if the electric field in the region is in the positive y direction and has a magnitude that is given by...

Homework Statement Revered Members, Kindly see my attachments. Homework Equations This is Atwood machine dealing with motion on a frictionless inclined plane. The Attempt at a Solution To better visualize the forces involved, i isolated m1 and m2 and drawn free body diagrams...

Homework Statement A hockey player shoots hockey puck towards net. The net is 20 metres infront of the player. If the puck leaves hockey stick at 30 m/s and 10° above ice. Find x and y components of the velocity. If the goalies catches puck just infront of net calculate final velocity of the...

What are the resultant components of the vectors? Homework Statement Determine the sum of the following three vectors. Give the resultant in terms of a. components, b. magnitude and angle with x-axis. Vector A has a magnitude of 66 at an angle of 28 degrees northeast (quadrant 1) Vector...

Homework Statement A lost dog travels 30 degrees south of west for 450m. He ten smells some food and sprints at 20 degrees east of north for 600m. a) draw each vector. Label magnitude and theta. b) calculate the vector components c) calculate the magnitude of the dog's displacement...

Homework Statement Amy wants to reach a destination that is 330m [E31 degrees N] from where she is. She travels a distance b towards [E20 degrees N] and then 100m to her destination. What is the distance b? (list all possible answers) (Sorry I don't know how to get symbols) Let [N] and [E] be...

Workmen are trying to free an SUV stuck in the mud. To extricate the vehicle, they use three horizontal ropes, producing the force vectors shown in the figure. (985N @ 31 Degrees Quad 1, 788 N 32 degrees Quad 2, and 411N 53 degrees quad 3. How do I find the direction of the resultant of...

Homework Statement The diagram below shows two vectors, A and B, and their angles relative to the coordinate axes as indicated. http://loncapa.physics.mun.ca/res/mun/PHYSICS/msuphysicslib/Graphics/Gtype07/prob01a_vectors2.gif DATA: α=43.7°; β=53.4°; |A|=4.30 cm. The vector A−B is...

A formula I know for the number of functionally independent components of the curvature tensor is: (n^2)(n^2 -1)/12. It gives 1 for n=2, 6 for n=2, 20 for n=4. However, for a metric space (with symmetric metric), the curvature tensor is completely specified by the metric tensor. For n=4...

I am trying to get fimilar with electrical components. I did some BG research on relays. Does this make sense. 1.My systems needs a switch to control a component so that is why I need a relay. It is a micro-switch that will move towards its position(Normally open or Normally Closed) depending...

Homework Statement I can't figure out how to start to find the components of these vectors! (see attached) It seems like there's not enough info :( What am I missing?! Homework Equations The Attempt at a Solution

Homework Statement You are given vectors A= 5.1 { i } - 7.0 { j } and vec B= - 3.8 { i } + 7.3{j}. A third vector C lies in the xy-plane. Vector C is perpendicular to vector A and the scalar product of vec C with vec B is 16.0. Find the x -component and y-component of vector vec C Homework...

I always seem to find this place whenever I'm in need of homework help, so I finally decided to register (and hopefully post in the right area). My given problem is Here are three displacements, each in meters: d1 = 4.2i + 2.7j - 7.9k, d2 = -1.0i + 2.0j + 3.0k, and d3 = 4.0i + 3.0j +...

Homework Statement there are four particles A(0,0) B(10,10) C(0,15) D(0,5) with masses of MassA=5kg MassB=10kg MassC=20kg MassD=25kg Questions: a)total force acting on A. b)total force acting on C. Homework Equations F=Gm1m2/r^2 The Attempt at a Solution

Homework Statement Picture is attached Homework Equations The Attempt at a Solution I feel like I am right and the computer is wrong, but I just wanted to check here first. I attached a picture of the problem and my answer. This is how I solved the problem: Fz=750sin(45)=530.33N...

Homework Statement Consider a boundary between two dielectric media with dielectric constants \epsilon1 and \epsilon2 respectively. The boundary carries a surface charge density \sigma. Use appropriate integral forms of Maxwell equations and an illustrative sketch to derive continuity...

Homework Statement please see the pictures! Homework Equations F=k(q1)(q2)/r^2 The Attempt at a Solution okay, I am just curious as to why t cos theta and mg are x components when they are clearly on the y axix! I thought you used cos for x components and sin for y components

Homework Statement #26 (on attachment). The speed of an object and the direction in which it moves constitute a vector quantity known as the velocity. An ostrich is running at a speed of 17.0 m/s in a direction of 68 degrees NW. What is the magnitude of the ostrich's velocity component that is...

he question asks to find the ratio between E0 and B0 and the ratio between w and k ? E and B are on the x-y plane they are given as verctors without any components dividing no x direction part,y direction part,z direction part so when when i use the maxwell equations \nabla\times...

hello! please someone help me,:smile: here is my question. Find the components of d=(3,5,7) along the directions of u, v and w consider: u=1/3(2,2,-1) v=1/3(2,-1,2) w=1/3(-1,2,2) I don't know where to start, I need some ideas to solve this thanx:smile:

Hi- I'm trying to calculate the effect of a magnetic field on some spectral lines. I know that each energy level will split into 2J+1 sub levels (each denoted by Mj). I can calculate the energy level splitting and using the selection rules (dJ = 0, +/-1, dMj = 0, +/-1, dL = 0, +/-1), I...

Hi all, I was reading the http://en.wikipedia.org/wiki/Quantization_of_the_electromagnetic_field#Electromagnetic_field_and_vector_potential" and I am a little bit confused. In this equation defining the vector potential \mathbf{A}(\mathbf{r}, t) = \sum_\mathbf{k}\sum_{\mu=-1,1} \left(...

If we find the Poynting vector at a point along all possible directions possible, can the different components of the vectors cancel each other, to give a net Poynting vector along some direction? I was wondering about this because Poynting vector after all represents energy flow. So can...

Homework Statement ^--------------^ |..../ |.../ |.../ |.../ |.../ |.../ |/_____________> ignore the dots If my y component is 120m/s and my X component is 50m/s, how do I go about finding initial V?? Attempt: i know that the y component = sin(O)*V and the x= cos (O) *V...

Homework Statement The components of a circuit with a voltage source and 2 resistors ( series ) has the following values vs = 10V, R1 = 100 , R2 = 150. With i1 leaving the +ve vs and i2 leaving -ve vs ( i.e. i1 entering node A, i2 is entering in the opposite direction of i1 ) Find: a)...

Homework Statement Given the following stream function: ψ=C(sin(theta)/r) Find the radial and tangential velocity components. Homework Equations ? Don't know any The Attempt at a Solution Absolutely no idea how to even begin. Do I take the integral or something? Any help...

other components? Hello, Lets say I have a glass of water with sugar or salt. Is it possible to somehow turn the water into a vapor without inputing energy into the other materials in the mixture? A microwave affects only water molecules, but when you raise their temperature- then...

Homework Statement Express the components of Fμν in terms of E and B.Homework Equations I have find sonewhere the final 4*4 matrix solution but i don't know what are the steps i have to follow in order to obtain it. The Attempt at a Solution

Discern initial V w/o components!? Homework Statement Ok, ball traveled 188m (618 ft) before landing on the ground. Assume ground is flat, and ball Vi is from 45o, disregard air resistance, and Starting position is .9m above ground. Find Vi I KNOW )))) a= 9.8 m/s2...

Lets say we measure L_z and L^2 simultaneously and L^2 happens to be equal to (L_z)^2. This requires a zero value for the x and y components of angular momentum. Does this mean, in this special case, we know the values of L_x L_y L_z & L^2 simultaneously?

Hi everyone, I am an industrial engineer who is on a internship. For the purposes of my work, I need to understand the major components and operations of electric generators; I am not looking for knowledge that would allow me to design and critique, but just seek sufficient knowledge that would...

Homework Statement Pictures of an optical mouse I took apart are attached. We had to find a circuit, take a picture, draw the circuit diagram and explain how it works. I'm not sure what a few of the components are. U3 is for the scroll wheel but what is it? U1 (the big IC) is the guts of...

using this formula E=13.6-(13.6/n^2) E = energy n= energy level. using that formula Bohr predicted the energy levels for each of the allowable orbits in the Hydrogen atom. now i would like to understand why 13.6 is used...

In Classical Mechanics, are the three components of Angular Momentum L: Lx, Ly, Lz independent to each other? It seems that there is an identity in Classical Mechanics (Sorry, I can hardly remember where I saw it): [Li, Lj] = εijk Lk. Note: [] is Poisson Bracket, εijk is...

Homework Statement For a rectangular wave guide the components of E were found to be Ex = A1 cos( k1 x) sin(k2 y) e-i (\omegat-\gammaz) Ey = A2 cos( k1 x) sin(k2 y) e-i (\omegat-\gammaz) Ez = 0 Show that in these equations A1 = -A2 k2 / k1 Homework Equations See part (a)...

For years I have mastered the art of simulation and testing, but I almost never seem to be able to find SPICE models for real devices. For example, the TI OPA548. It's a high-current power op-amp. I would love to run some simulations...but I can't find a model of it anywhere to use in...

I realize this is a "simple" mathematical exercise, in theory, but I'm having a lot of trouble finding some algorithmic way to do it. The problem is this: I want to expand the contravariant metric tensor components g^{\mu\nu} in terms of the covariant metric tensor g_{\mu\nu}. The first order...

Homework Statement A circuit contains two elements which are either L, R or C. The current in the circuit lags the source by 50 degrees when connected to a 120V, 60 Hz and i= 5.6A source. Homework Equations tan Φ = X/R X= wL R= V/I The Attempt at a Solution (The question does not...

Homework Statement two forces of 40N and 50N act at an angle of 60 degrees. determine the resultant force and the equilbrant this is what i have so faar: resultant=F1 + F2 let F1 be along the x axis add x and y components: F1x=40N F1y= none since its along the x-axis...

Hello! I have a few questions about how the Affine connection works. I know the geodesic equation; \Gamma^{\lambda}_{\mu \nu} = \frac{\partial x^{\lambda}}{\partial \xi^{\alpha}} \frac{\partial^{2} \xi^{\alpha}}{\partial x^{\nu} \partial x^{\mu}} So, for example, if I had the...

I came across this question. We're looking for the conctd components of this set of circles: centered at (0,1) and with radius 1-1/n B ((0,1), 1-1/n) for n = 3, ...to infinity The radii are getting larger up to 1. I'm thinking the connectd comp. form an open set at infinity would it be...

Hey, my first post on here, just wanted to ask how to calculate the effect of a motor, and a switching current in the wires supplying the power on the surrounding electronics. The two motors will be supplied a PWM signal of 20Khz frequency, 5amp, 7v2 at 80% duty cycle. This is part of a...

Homework Statement Vector A= 5.00 m (See the attached image for the graphical representation) Vector B=17.0m Vector C=15.0 m Homework Equations Pythagorean Theorem, Basic trigonometry The Attempt at a Solution Finding the magnitude of the resultant vector is not...

I am having problems finding the irreducible components of the variety W=V(x^2-y^2, y^2-z^2) the 1st part gives x+y, x-y, the second y+z, y-z, but I am pretty sure they are connected!

Hi, I'm a total layperson, haven't taken a physics class since AP in high school. Trying to figure some stuff out for some writing I'm doing (poetry, bizarrely enough). So excuse if this question is super-simple or if the terms of the question are nonsensical somehow. "Degree of freedom" in...

A surveyor walks 120 meters from a beginning point at 0 degrees along the east boundary line. he then turns 90 degrees north for aprox. 260 meters. on the way back he then walks 325 meters west at 155 degrees. determine the magnitude and direction of the resultant vector using the head to tail...

Why does a square wave contain only odd harmonics of the fundamental? If the even harmonics are low, how low are they. What happens to the even harmonics.