Component Definition and 544 Threads

I worked out the attached problem. I was just looking for a logic check on my work. The problem asks you to find the component force along the axis of the hook. Thanks

Hi! I know this is pretty basic... I'm teaching myself from a textbook, and I got a different answer from the book...It doesn't have the problem worked out, just the answer. I just need to figure out what mistake I made. Homework Statement Find the resultant of the following forces: (a) 30N...

Hi friends. Many a times i have gazed "What is darkness?" Can anyone tell the components of a darkness? In other words, what forms the darkness? Is that the absence of light? Absence of Particles? Help me out guys

How can find components of tetrads from metric ? i know the relation between tetrads and metric g_{μ \nu}=η_{ab}e^{a}_{μ}e^{b}_{\nu} where e^{b}_{\nu} are component of tetrads , in the case of Schwarzschild that metric is diagonal , it is a easy problem but what about non-diagonal metric like...

Hello. I've a question about transistor IRF-740. This component has a Zener diode connected between drain and source. Has this diode a function of limiting over voltage ?

Homework Statement The 350-lb force is to be broken into components along the lines AB and AC. 2. The component along AC is most nearly 1. 175.0 lb 2. 186.2 lb 3. 202 lb 4. 225 lb 5. 239 lb 6. 268 lb 7. 294 lb 8. 303 lb 9. 404 lb 10. 457 lb I have attached an image of the...

Homework Statement Find the Y component of the Center of Mass http://img607.imageshack.us/img607/7122/83370796.png Homework Equations ∫(r*dm)/M The Attempt at a Solution I keep coming up with (2/3)B but i know since that there is more mass near the origin axis, it should be...

Homework Statement http://i33.photobucket.com/albums/d86/warnexus/physicsfigure.jpg Homework Equations electric force = (field strength)(elementary charge) electric force = k(e^2)/(distance^2)The Attempt at a Solution the goal of the problem is to find the x and y component of an electric...

What software is used by manufacturers to produce the thousands of data sheets for all of the products that they make? Specifically, the circuit diagrams which look very crisp, like they were made in a vector format. I assume that each manufacturer has some proprietary software that they use to...

Hello. I have to replace a component at the input of an old oscilloscope. The reference is unfoundable ( 41R105 ? ) in fact it is 2 NFET transistors in the same package (TO-39). I guess Ft is >= 1 GHz. I'm just looking for a component of the same kind (of course not same reference) that iI can...

Homework Statement Romeo is chucking pebbles gently up to Juliet's window, and he wants the pebbles to hit the window with a horizontal component of velocity. He is standing at the edge of a rose garden 8m below her window and 9m from the base of the wall. How fast are the pebbles going when...

Homework Statement Suppose I have two substances in a solution, each forming an equilibrium with its corresponding vapor phase, and thus having its own partial pressure. How can I measure this partial pressure of one of the components, given the pressure of each component in its pure form...

Just wondering what the name of the component as a whole is? And what is it made of? Also, if you could tell me the name of all the constituent parts, that would be great...

Homework Statement Homework Equations Work = F xcomponent * delta x The Attempt at a Solution The force is given as a resultant since it does not give a specificed x or y component. Any hints on how to do I find the x component?

Homework Statement http://imageshack.us/a/img197/3519/circuith.png Equivalent Resistance of circuit = 17.31 Ω Homework Equations V = I * R The Attempt at a Solution Total voltage of the circuit, if I'm doing this correctly should be: E = (3.00 A) * (17.31 Ω) = 51.93 V...

Quarks are imprisoned in hadrons, and have large binding and kinetic energies at all times. Ditto about gluons. How can inertial mass of quarks inside hadrons be measured? Also, how is it proven that gluons are massless? What effects would happen if gluons had rest mass, as much as up to a...

Hi, I've recently been reading up on circuit electricity and as the title states have found difficulty understanding the difference between pd of a source and a component from the textbooks I've been reading. So far I am to believe that the pd of a circuit is directly proportional to its...

Hello, Considering stress energy tensor as: [T00,T01,T02,T03 T10,T12,T13,T14 T20,T21,T22,T24 T30,T31,T32,T33] Is T00=Energy density? Is T10,T20,T30 = momentum density? t02=energy flux? t11,t22,t33=pressure? which is the momentum flux? where is the shear stress? Thanks, --...

Assuming that c is a "conversion factor" to convert between space and time, Then, in 4-vector, we have x_1 through x_3, and t, where, x/c = t x/c = t, (where t = time, c= lightspeed, x = spatial dimension) If we do what we did to space to get time, to momentum, p/c = m*v/c = m (x/t) / c =...

[SIZE="4"]we already know that the scalar component of the Centripetal ( Radial ) Acceleration vector is always negative because it's ALWAYS directed to the opposite direction of its unit vector ( toward the center of the circle ) , and this is satisfying to me and to the formula . however ...

Let's say I have the electric potential as a function of x, y, and z: V(x,y,z) Now I want to find the x component of the electric field along the x-axis: Ex(x,0,0) I could take the derivative of the potential wrt x and then plug in zero for y and z. However if I was to plug in zero...

Homework Statement A boat moves at an angle of 60° to a horizontal line. The x component of the boat's velocity is 5 m/s. What is its y component of velocity? Question 25 answers 10 m/s 10 √3 m/s 5 √3 m/s 5 m/s Homework Equations How exactly do I find the...

If you consider empty space case (energy-momentum tensor is zero), the curvature of space is Ricci-flat but the Riemann tensor is not necessarily zero, which allows for gravity waves in empty space. It's not difficult to see that the waves would have to be transverse (analogous to EM waves)...

I am wondering if there is a systematic way to fix the phase of complex eigenvectors. For example e^{i \theta}(1,\omega,\omega^2) where e^{i \theta} is an arbitrary phase and \omega and \omega^2 are the cube roots of unity, is an eigenvector of the cyclic matrix \left(\begin{matrix}0&...

I have to find the expectation value of the z component of the angular momentum for a particle on a ring and the expectation value of the z component of the angular momentum squared for a particle on a ring. The wavefunction is e^((± imx)) I've determined that the expectation value for the...

**refer to attached picture** I'm having some trouble understanding what is happening here. I'm trying to write this vector into its component form so I can solve an equilibrium problem. But I don't understand how the book is splitting this vector. I only drew the vector that I am having trouble...

Pls help with number "B". The X component doesn't agree! Ignore the data entered in the fields for X,Y(incorrect). I later figured Y component is "-1", but have no idea why X didn't work out. Thx a lot!

Homework Statement Determine the components of F that act along rod AC and perpendicular to it. Point B is locateda distance f along the rod from end C http://imgur.com/iGJkN Given: F = 600 N a = 4 m b = 6 m c = 4 m d = 3 m e = 4 m f = 3 m I have no clue where to start. please help! Homework...

Homework Statement An object is moving in the x direction at 1.3 m/s when it undergoes an acceleration. Acceleration vector equals .52 j hat meter per second every second. Find its velocity vector after 4.4 seconds. I am told to find x and y component of the velocity vector. Homework...

Hello Everyone! About Amplitude Modulation, Usually it is seen in the book or web that (e.g. http://www.ni.com/white-paper/3002/en ) '''' The message signal can be represented by m(t) = Mb cos(2πfb + φ) and the carrier signal can be represented by c(t) = Ac cos(2πfc + φ), Now...

Homework Statement Suppose v = <-3,-2, 1> and w = <-1,1,1>. Then projw(v) = < -2/3, 2/3, 2/3 > , and the component of v perpendicular to w is? Homework Equations The Attempt at a Solution I understood how to get the projection, and tried using the component formula...

Pronunciation of "component" Hello Physics Forums, I just have a quick question. How do you pronounce "component", as in a vector component? Do you stress the first or second syllable? It seems that all of my physics teachers and professors stress the first syllable, while all of my math...

Hello, I've been trying to find the answer to this question on the internet but no real luck so here goes: Imagine a signal My_signal which has two components, the actual signal A which is not constant over time and a noise component, we can call it N, where said noise component has a standard...

Of course we all know the standard symbols to use when drawing electrical circuits, but is there an analog for optical setups? I'm working of a poster and most of the symbols I'm using are just boxes with labels next to them, or just lines for mirrors and lenses.

i am a chemical engineer but this is fluid mechanics stuff so i figured you physics geniuses would know this stuff so to find the z component of force exerted by fluid on the surface of the sphere they find the normal force acting on a surface element of the sphere, integrated over the entire...

Hey, On the back of the circuit boards in most electronics there are labels for the parts. I know a few of them: R - Resistor C - Capacitor L - Inductor D - Diode Q - Transistor (Is this all transistors or just BJTs?) U - Integrated Circuits However, there are some that I don't...

This is just a conceptual question that I've been personally wondering about. So light has a magnetic field wave perpendicular to an electric field wave. I don't quite understand the magnetic field wave though. I thought that magnetic fields were not supposed to have a beginning or end. They...

Hello, I do not manage to visualize the link between the component of the quadrupole Q_ij and the spatial distribution of the electric quadrupole field. I was told to imagine the Q_ij as an ellipsoid, which I understand (the ellipsoid "radius" in a given direction being the strength of the...

Homework Statement A ball is thrown with an angle of 45 degrees to the horizontal by a person standing on the ground. The y-component of the velocity of ball in projectile motion is differentiated with respect to time. i.e. dv/dt of the y-component of velocity.Homework Equations The Attempt at...

I was told the space S^3 is isomorphic to the set of all 2 component spinors with norm 1 (see https://www.physicsforums.com/showthread.php?t=603404 ). Can I infer that the space of all 4 component spinors with norm 1 is isomorphic to S^7? If so is a Dirac spinor isomorphic to S^7? Thanks for...

Can a point in S^3 be uniquely labeled by a 2 component Spinor? Thanks for any help!

What does "couples as the 4th component of a vector" mean in the Dirac equation? I'm doing an exercise regarding the spin-orbit operator and the Dirac equation/particles, and I'm having trouble understanding the link between terminology and mathematics. The particular phrase I'm having trouble...

I'd like to know how do i find I2 (Negative sequence current) if I know Ia, Ib and Ic but don't know angle (in normal system_not fault)? My system's 3 phases 3 wires.

Angle of vector in component form Find the vector's magnitude and direction. Use right as the +x direction and up as the +y direction. \vec{A} = 3.50 \hat{i} - 7.70 \hat{j} Find \theta_A degrees below the positive x-axis. \theta_A = arctan\left ( \frac{7.70}{3.50} \right )...

Hi everyone, This appears to be a trivial question but I'm uncertain to the correct answer. If I have forces of 3N, 4N and 5N in the x,y and z directions respectively. The resultant force will be the square root of these components squared ≈ 7N. If I want to describe any of the components...

Hello, we are learning about single balanced and double balanced modulators. Apparently single balanced modulators include an information, upper and lower sideband component while double balanced modulators use only the upper and lower sideband components. Can someone please tell me why the...

The test question was... We are given a region bounded by the functions √x and x. We were also given the density and mass of the region and asked to only the component y of the centroid. I did not know how to implement these given variables, density and mass into my equation for y bar so I...

I have a 100watt xenon lamp , the UV component comprises of 5-6% of the total spectrum emitted by the xenon lamp . How do I calculate at what power is the UV light emitted ? Is the whole spectrum being emitted at 100 W or is the power distributed through the spectrum? How is this...

I have two questions: Pic 1: An object is placed on top of a spring scale which strapped to a horizontal surface. They slide down on an incline of 30 degrees. Friction is ignored. What fraction of the weight does the spring scale read of the top object? (Only incline is given, and friction is...

There is the problem which i haven't been able to understand: "Show that the tangential component of an electric field is continuous from one side of a conductor to the other" What exactly is asked and how to prove it? Thanks!