Component Definition and 544 Threads

In THE THEORY OF REALMATERIALS(Annu. Rev. Mater. Sci. 2000. 30:1–26), Marvin L. Cohen states that "Because charge transfer reduces the covalent component of a heteropolar bond, B0 is also reduced." Can you explain that connection between charge transfer and covalent component of a...

A ball is thrown into the air from ground level. After a time t = 2 s, the ball has traveled to a position x1 = 27 m to the right of and y1 = 10 m up from where it was thrown (at this time, the x and y components of the ball's velocity are still positive). The axes show the x and y directions to...

The one thing that is NOT identical for different particles in a state is the z component of spin, having a probability of being positive or negative. So when interchanging particles how do you handle the z component of the spin, it simply can't be interchanged along with the position and...

Hello, What prevents the S_z quantum number from having a value of zero? With a standard angular momentum system the quantum number can have values between -l and +l.

Hi everyone I have a little problem in understanding the trasformation of vectors component when passing to a different coordinate system (abbreviated CS). Theory says that the components of a vector in the first CS x with component (V^0,V^1,...,V^n) will transform changing CS according to...

Hi there, I'm really ashamed of doing this stupid question but I really need help with this thing. And, even if it's simple, it's not homework. I have a point P=(x,y,z) with velocity v=(vx,vy,vz) how can I determine the radial component of the velocity? My answer is that...

For an arbitrary vector, what is meant by tangential and normal component of the vector?

In the solution manual (which I never trust) the tension vector of the rope that emerges from point A only has a vertical component when calculating the sum of all moments on joint C. I disagree with the solution manual, since this vector also has a horizontal component, and if you calculate its...

Homework Statement Vector p = i + j + k Vector q = 2i - j Find the perpendicular component of vector p of vector q. I think i have provided everything what is required, i just don't know what to find. I didn't get what the perpendicular compnent of vector p of vector q means...

Hi guys, we had an engineering drawing assignment, where we had to prepare Bills Of materials for various components, I did two components, but I can't identify what this third component is (see attached image). I would appreciate it if someone could tell me what in the world this thing...

Homework Statement First, there is a graph showing x initial at (0,0) and x final at (1,1) Given: F = xy i +xyj Find the work done by this force moving the particle from x initial to x final. [note you'll need a relationship between y and x] Homework Equations W = Fdcos(theta)...

Homework Statement What is that oscillatory component? And is my answer for the following correct? x(t) = u(t) H(s) = \frac{R}{R + sL} y(t) will contain oscillatory component if R > \frac{1}{L} True or False? Homework Equations Basic Laplace Transform: u(t) \longrightarrow...

excuse me,may someone list down all the gearbox components, i have some difficulties in finding all this..tq..

Homework Statement An object has two ropes attached. One is on the x-axis (positive) with a 60 lb force. One is 120* (Quadrant II) from the first rope with a 30 lb force. I have to find the resultant force and angle using the component vector method of addition NOT the parallelogram method...

Homework Statement Find f(z) = u(x,y) + iv(x,y) with u or v as a given.Homework Equations u = \frac{x}{x^2+y^2}The Attempt at a Solution Using the Cauchy-Riemann equations, if the function is analytic, then u_x = v_y and u_y = -v_x So, the first thing I did was find the x derivative of u...

Component to VGA schematic?? Anyone know where i can find a schematic for a component to VGA adapter? A friend is looking to make one so he can use his ps3 on his monitor but says most of the store bought ones are quite expensive and have lots of extra features. We are both engineering majors...

Which component E or B of an electromagnetic wave is responsible for visible effect?

Given that a photon or neutrino creates a gravitational effect, and given that the CMB, microwave photons emitted 13.8 billion years ago are still around in the universe, then it would follow that ALL photons or neutrinos that have not since been captured should also still be present in the...

Hi hope someone could help me understand the workings of electronic components. I think I am right in saying that all electronic components require energy for them to function. If you connect a battery to the component to supply the energy then this is supplied from the electrochemical...

How do you calculate the stress in a cantilevered beam with a point load at the free end where the load has a large horizontal component loading the beam in tension as well as bending from the vertical component? And the beam bends far enough so it's slope will match the slope of the load at...

I need to learn and understand why a component of a binary solution cannot be 100%. This needs to be done thermodynamically with equations. I can not find much online, and i need good detail of equations and graphs. Thanks if you can solve.

Homework Statement A particle with charge Q is located on the Y axis a distance a from the origin. A second particle with a charge q is played on the X axis a distance d from the origin. The value of d for which the x component of the force on the second particle is the greatest is: a)0...

Homework Statement The voltage at terminal a relative to terminal b of an electric component is given by v(t) = 20\cos(120\pi t) Volts and the current into a is i(t) = -4\sin(120\pi t) amps. Find 1) the total energy that flows into component from time t1 to t2 and 2) in particular find the...

divergenceless vector function - can we draw "component by componet" conclusion? Homework Statement Is this true or false? \nabla \bullet {\bf{A}} = \frac{{\partial {A_i}}}{{\partial {x_i}}} + \frac{{\partial {A_j}}}{{\partial {x_j}}} + \frac{{\partial {A_k}}}{{\partial {x_k}}} = 0{\rm{...

Homework Statement The box slides down the slope described by the equation y = 0.05x^2 m , where x is in meters. If the box has components of velocity and acceleration of vx = 3 m/s and ax = -1.5 m/s^2 at x = 5 m determine the y component of the velocity and acceleration Homework...

Homework Statement Consider the three displacement vectors A = ( -2i + 3j ) m, B = ( 2i + 7j ) m, and C = ( -7i + 5j ) m. Use the component method to determine the following. (a) The magnitude and direction of D = A + B + C |D| = ___ m θ = ___° (from the +x axis) (b) The magnitude and...

I have been re-designing some older products at work to address obsolescence issues. Does anybody know a good resource for locating replacements for obsolete components. The ideal solution would be to find components that would not require any PCB rework, but finding drop in replacements is...

what is horizontal component of Earth's magnetic field? [SIZE="4"]BH. Please elaborate the concept. Thanks in advance.

Homework Statement Show: <Jx>=<Jy>=0 Homework Equations Jx=1/2(J++J-) Jy=1/2(J+-J-) The Attempt at a Solution <jm l Jx l jm> = < jm l 1/2 J+ l jm> + < jm l j- l jm > = < jm l h/2 sqrt [(j-m)(j+m+1)] + h/2sqrt[(j+m)(j+m+1) l jm > i am not sure how to apply the next step

Hi there, I'm trying to determine the radial component of a velocity vector in a disk. The vector doesn't (necessarily) start from the centre of the disk and can be pointed in any direction. I've attached a .pdf with the schematics - it seems like a simple problem but it has me stumped...

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Is component(maximal connected set) of a metric space open or closed or both(clospen)?or even can be half-open(not open and not closed)? I know it is a silly question as (3,5] is a component in R,right? However some theorem i encountered stated that component must be closed or must be open. I...

Homework Statement Calculate the expectation value for the z component of angular momentum (operator is (h/i)(d/dx)) for the function sinx*e^(ix). Homework Equations I think the only one relevant is the expectation value: <a> = integral[psi*(a)psi] / integral[psi*psi] where psi* is...

IVE TRIED EVERYTHING can someone please help me! i have 1 more try i keep getting it wrong i only can get the first one right pleasee help me!

A child of mass 22 kg swings at the end of an elastic cord. At the bottom of the swing, the child's velocity is horizontal, and the speed is 6 m/s. At this instant the cord is 3.70 m long. At this instant, what is the perpendicular component of the rate of change of the child's momentum...

This may be a really dumb/easy question, but... I have a computer fan that I'm trying to repurpose. The specs on the fan say DC12V, 0.25A. I'm trying to model the fan in a circuit diagram because I want to 1) make sure i don't put too much current through it and 2) add a potentiometer to it...

I am trying to find the name of a particular type of joint--I assume it has a name since it is pretty common I think. Imagine two shafts (A & B) joined at 90 degrees to one another with a bevel gear. With both shafts in a constant x-y plane, rotating shaft A will cause shaft B to rotate...

1.A superhero flies 340 m from the top of a tall building at an angle of 22 ◦ below the horizontal. What is the horizontal component of the superhero’s displacement? Answer in units of m. What is the vertical component of the super- hero’s displacement? Answer in units of m. 2...

Homework Statement Given y^{2} = 8x^{3} + 8x where x and y are in metres, and y is positive What is the normal component of the acceleration When x = 4m, x = 7m/s, x = 2m/s^{2} Note : Wasn't sure if it was Calc or Physics, but I was leaning toward Calc, as it is basically Algebra...

May a magnetic field exist w/o electricity? Yes, as lodestone shows us but where is the electricity? Electricity generates magnetism with it. So where is the electricity with lodestone?

Homework Statement This question is for statics - 3D rigid body equilibrium When taking moments about the x axis, why is only the k component considered? I have attached a picture of my situation Homework Equations Sum of Forces = 0 Sum of Moments = 0 {Its in equilibrium} The...

hi guys, several things about PCA (principle component analysis) I hope someone can run over with me and correct me if I'm wrong. say I've done a PCA on correlation matrix and the eigenvlaues are: 2.37,1.18,0.58,0.28,0.28. 1) if I then do a reduced space plot using the first 2 pcs, is...

#8: A person walks 60.0 m east, then 80.0 m NW. #9: A person walks 15 m west, then walks 7.0 m @ 15 degrees South of West. #10: Two forces act on an object. A 45 N force pushing to the north, and a 70 N force pushing at 20 degrees to the east of north. #11: Some people go for a walk...

Hi, I'm trying to build what a biologist would call a "stimulus isolator". That is, I have a voltage follower connected to a system that I want to zap with 0-100V, so that the voltage follower doesn't see the voltage (much). I have an A/D board that can put out 0 to 5 Volts. I want this...

I am trying to work out the real component of the wavelength of microwaves in copper. I am given n2=er=-i sigma/eo omega where n is the refactive index er is the relative permitivity eo is the permitivity of free space i = sqrt(-1) omega is the frequency of the microwave sigma is the...

Various chemical formulae for the composition of superconductors quote the oxygen content, ie the number oxygen atoms present, as say Osub(10-delta). I would like to know the significance of delta.

tell me something about DC offset component in reference toshort circuit fault current

Homework Statement A cruise ship leaving port, travels 50.0 km 45.0 degrees north of west and then 70.0 km 30 degrees north of east. Find a. The ship's displacement vector (the answer is Rx=25.3 km, Ry=70.4) b. The displacement vector's magnitude and direction...

A rock is thrown off a 100.0m cliff upward at an angle of 20o to the horizontal. It has an initial velocity of 15ms-1 and strikes the rocks below. Find how far away the rock is from the base of the cliff. I calculated total time of flight (projectile parabola + 100m vertical descent)...

HDMI / Component Video "Switches" Hi guys, I just entered the HDTV realm and I'm having a little difficulty setting up my system. I don't have any place to put old extra TVs, so I have three (no, the girlfriend doesn't like it) TV's basically side by side. Are there splitter switch things so...