Components Definition and 911 Threads

Just need a bit of clarification, I am attempting to make a dynamo system but not totally sure where to start. What components would be required? It needs to be pretty small, similar size to that used in a wind-up torch, and it will be required to produce heat rather than light. Any help...

Homework Statement The diagram attached shows a solid engineering component which consists of a solid cylinder of length L and radius r, together with a right circular cone with semi-vertical angle = 11 degrees. The total surface area of the component is 481. The component is to be...

http://htmlimg2.scribdassets.com/cjr8y68tsmk4nsw/images/3-f2357829f8/000.jpg it's the picture on the bottom P= 15 Q= 25 I was wondering if this problem can be done using components of the force, instead of using the parallelogram law or the triangle rule. I'm a little confused on...

I have two questions about components which are closely related. The first is about how 'real' the component of a force is. Take a force F in diagram 1. You can componentize it along two perpendicular axes. Now, F\sin{(a)} is a force directed along the vertical axis. If we now componentize...

Homework Statement We're trying to integrate a vector, E, with components, Ex = 6x^2y, Ey = 2x^3 + 2y and Ez = 0, from the origin to x = -0.4, y = 6.1, z = 0.0. Homework Equations integral E dot dr = V The Attempt at a Solution i don't know how

I've been doing a project with condenser microphones, and I came across a schematic (see attached). I was wondering what some of the components do. I know the 10uF cap across pins 1 and 8 are used to set the gain (just cap makes maximum gain) of the LM386. I was told the 470uF cap is used...

Homework Statement Explain the factors that determine the parallel and normal components of the elctric field near to the surface of a flat metal plate Homework Equations The Attempt at a Solution No idea what this question wants..? Is it something to do with the smoothness of...

Homework Statement Two vectors have equal magnitude of 14.8 m and the angles are theta 1 = 32 deg & theta 2 = 108 deg. Find a) their x component b)their y component of vector sum \vec{}r c) the magnitude of \vec{}r & d) the angle \vec{}r makes with the positive direction of the x axis...

Homework Statement Consider the following two basis sets (or triads) in {R}^3: \{\vec{e}_1, \vec{e}_2, \vec{e}_3\} := \{(1, 0, 0), (0,1, 0), (0, 0, 1)\} \{\widehat{\vec{e}_1}, \widehat{\vec{e}_2}, \widehat{\vec{e}_3}\} := \{(1, 0, 0), (1,1, 0), (1, 1, 1)\}. Let a covariant...

Homework Statement Suppose the astronaut has a weight on Earth of 190 lbs and is wearing a space suit that weighs an additional 180 lbs on Earth. What is the y-component of the force in Newtons on the astronaut and his space suit during a jump on the Moon? Show your calculation. Does the...

Homework Statement At time t, a comet has the position R = (t2-1)i + 2tj At t = 2, find the radial and circumferential components of velocity and acceleration Homework Equations Vr = V * Ur Vθ = V * Uθ ar = a * Ur aθ = a * Uθ Ur = cosθ i + sinθ j Uθ = -sinθ i + cosθ j...

Homework Statement A boulder of weight "w" rests on a hillside that rises at a constant angle "a" above the horizontal. The boulder's weight is a force on the boulder that has a direction vertically downward. In terms of "w" and "a", what is the component of the weight of the boulder in the...

5 fundamental circuit components or functions and what are some safety functions that are performed in most practical power circuits? thanks:)

1. Problem is pictured here. http://engineeringhomework.net/statics/hw1p14.html" I have already found the x and y components, but I don't know how to get the u and v as shown.

1. Problem is pictured here. http://engineeringhomework.net/statics/hw1p14.html" I have already found the x and y components, but I don't know how to get the u and v as shown.

Homework Statement I read how to solve a problem I am working on, and part of it deals with adding vector components. A is the vector, Ax is the x component, Ay the y component, and theta is the angle A makes from the y axis.Homework Equations The Attempt at a Solution The solution involves...

Firstly, apologies for the notation. The 4-momentum of a massive particle (rest mass m) is defined by p=mu where u is the 4-velocity. Thus in a frame S in which a particle has 3-velocity u the components of p are [p]=gamma*(mc,mu) How can we then identify the zeroth component of...

Problem: An engineering system consisting of n components is said to be a k-out-of-n system (k<= n)if and only if at least k of the n components function.Suppose all the components function independently of each other with a probability 1/2. Find the conditional probability that component 1 is...

Homework Statement Sketch the waveforms of the harmonic components in the output and the resultant output voltage Homework Equations Vo= 0.98sin(1600*pi*t) - 0.1cos(3200*pi*t) + 0.1 The Attempt at a Solution I know that the 0.1 will be a straight line The amplitude of the sin wave...

Homework Statement Consider the two-dimensional space given by ds^2 = e^y dx^2 + e^x dy^2 Calculate the covariant and contravariant components of the metric tensor for this spacetime. The Attempt at a Solution Are the covariant components just e^y and e^x with the...

1. Suppose that two electronic components in the guidance system for a missile operate independently and that each has a length of life governed by the exponential distribution with mean 1 (with measurements in hundreds of hours). (a) Find the probability density function for the average length...

Homework Statement I read that if the direction of velocity is perpendicular to the acceleration the magnitude doesn't change and if they are parallel the direction doesn't change and if they are neither both change but if we have v1=6i+8j ,|v1|=10 theta with positive x =53 v2 =10j...

I'm finding it hard to understand this, does anyone know where I can find worked examples of how to find the components of the christoffel symbols of a metric? Please don't give me one to try, I really need a worked example. Thanks :S

My application involves narrow-band notch filtering of primary red, blue, and green wavelengths simultaneously from a white-light source. Will this yield greyscale output, black, or white? What if the light source is a RGB display? I understand that this may be a naive question - but it's...

Homework Statement A skier leaves the ramp of a ski jump with a velocity of 10.9 m/s, 13.9° above the horizontal. The slope is inclined at 48.4°, and air resistance is negligible. Calculate the velocity components just before the landing. Enter the x-component (horizontal) first and then the...

Homework Statement The force F = (15x - 22y)N is applied at r = (4.0x + 7.0y) meters. What torque (about the origin) does this force produce? Homework Equations Torque = r * F * sin theta r = magnitude of radius, F = magnitude of F, theta = smallest angle between the directions of r and F...

no. of field equations and components or Riemann tensor?? Someone was trying to explain to me about curvature in space. From what I got from what they were saying doesn't make sense to me. I'm not sure I understand what the number of components, N, of R\alpha,\beta,\gamma,\delta when compared...

Quantum physics texts describe how it is impossible to measure S(z) and S(x) spin components of a single electron at the same time where z represents the z axis,etc. What would happen if you try to trick nature by using a correlated pair of electons, emitted from an ion, moving in opposite...

Three forces A, B, and C act on a body as shown (see attachment). A fourth force F is required to keep the body in equilibrium. x-component of force F is closest to: a.+32 N b. +28 N c. -28 N d. -32 N e. +19 N y-component of force F is closest to: a. +32 N b. -32 N c. -28 N...

Homework Statement You are given vectors A = 5.1i - 6.7j and B = - 3.2i + 7.2j . A third vector C lies in the xy-plane. Vector C is perpendicular to vector A and the scalar product of C with B is 19.0 What're Cx and Cy? The attempt at a solution A.C = 0 B.C = 19

Homework Statement In class we had a 2D with angles and components question. Homework Equations To find the answer I eventually got to the x=xo[SUB]+v[SUB]ot+1/2at2 equation and came up with ***-4.9(28/37cosx)2+28tanx-3*** The Attempt at a Solution But once I got to this point I...

Homework Statement 1. Given the following force vectors: A is 27 lb at an angle of 27° clockwise from the +x-axis, and B is 44 lb at an angle of 45° clockwise from the +y-axis. (a) Make a sketch and visually estimate the magnitude and angle of the vector C such that 2A+ C − B results in a...

Homework Statement If a sailboat is heading East at 18 m/s and it makes a turn until it is heading 50oNof E at 16 m/s, and the turn takes 2.5 minutes, what is the average acceleration of the boat in m/s2 Homework Equations None The Attempt at a Solution I drew the vectors of 16...

Homework Statement If the x component of a vector A, in the xy plane, is half as large as the magnitude of the vector, the tangent of the angle between the vector and the x-axis is: A rad 3 B 1/2 C (rad3) / 2 D 3/2 E 3 Homework Equations The Attempt at a Solution I first drew a...

1. Hi I am writing a program to calculate 3D vectors for visualization and I am testing textbook problems such as: "If vector c forms an obtuse angle with the 0Y-axis and is orthogonal to both vectors a = 3i + 2j + 2k and b = 18i - 22j - 5k Find the components of c if its norm...

In the previous section he derived the components, with respect to the coordinate bases associated with a polar coordinate system, of the Riemannian metric tensor field on S2, the unit 2-sphere: g = \begin{pmatrix}1 & 0 \\ 0 & \sin^2(\theta) \end{pmatrix} where \theta is the zenith angle...

Homework Statement Plane X=0 has a uniform charge density, \rhos while plane X=a has -\rhos. Determine the electric field intensity in region X<0. Homework Equations E=\frac{Q}{4\Pi\epsilon0R2}aR The Attempt at a Solution I already know the answer to this question. What I'm...

Hi, I have a question about counting (how difficult should that be ;) ) I have the set of tensors in D dimensions \{h_{\mu\nu}, H^{\mu\nu}, t_{\mu}, T^{\mu}\} with the relations H^{\mu\nu} h_{\nu\rho} = \delta^{\mu}_{\rho} - T^{\mu}t_{\rho} T^{\mu}t_{\mu} = 1...

Hey guys, I am not sure I did this problem correctly and would like some feedback. Below is how I reasoned through the problem. Thanks for your help. Kevin Homework Statement Find x- and y-components of the vector (3.0 , - x-direction). Homework Equations cosθ= A/H sinθ=...

Homework Statement what are the x and y components of a vector a in the xy plane if its direction is 210(degrees) counterclockwise from the positive direction of the x-axis and its magnitude is 14 m. Homework Equations vector is in the third quadrant with an angle of 30(degrees) The...

Hey everybody, sorry if I sound like a noob, but I keep emailing my teacher and he doesn't respond, I would really appreciate it if someone could help me understand these types of problems. Thanks! Homework Statement Each of the following vectors is given in terms of its x and y components...

Hello! I was wondering, if I have two vectors each with three components, this is not sufficient to define all of R3, but it defines a subspace. Does this subspace have to be a plane? I think it does, but I am having difficulty visualising it or describing it. I think I can ascertain that if...

Homework Statement A resistor, R = 100 Ω, an inductor, L = 0.20 H and a capacitor, C = 3 µF are connected in series across an ac source of VS = 100 V and frequency, f = 200 Hz. Calculate the following for this series circuit: a) the total circuit impedance (Zt) b) the total circuit current...

i am now studying dirac equation why there are only four components? not more? is it possible to test the number of components experimentally?

Homework Statement Determine the scalar components Ra and Rb of the force R along the nonrectangular axes a and Also determine the orthogonal projection Pa of R onto axis a. Homework Equations n/a The Attempt at a Solution I tried setup rectangular coordinate but that didn't work...

Homework Statement 2 A particle with charge 94.5 nC is moving in a region where there is a uniform magnetic field of 0.450 T in the positive x-direction. At a particular instant of time, the velocity of the particle has components: vx = - 1.68 x 104 ms-1, vy = - 3.11 x 104 ms-1 and vz = 5.85...

Homework Statement 2 different types of components in a black box, which might be 2 of the following, resistor, capacitor or inductor. they can be in parallel or series. 2 tests: 1. DC voltage = 0.01 ohm 2. fixed 1V AC RMS to the input and f=10Hz, I=75mA f=100Hz, I=20.9mA...

Homework Statement Two medical field teams set out for a reconnaissance mission and lose one another. The GPS at their original camp shows the location of the first medical team as 43 km away, 15° north of west. The second medical team strayed 32 km away, 33° east of north from base camp...

Homework Statement See attached photo. Find the resultant displacement measured from the starting point. Homework Equations The Attempt at a Solution When it comes to angles, i sometimes get confused when to add 180 or not. FOr the first two distances, we don't have to find...

Homework Statement A unit vector lies in the xy plane, at an angle of 131 degrees from the +x axis, with a positive y component. What is the unit vector? Homework Equations cosO=adj/hyp The Attempt at a Solution cos131*=adj/hyp I know that the z component is obviously 0 (xy...