Component Definition and 544 Threads

Homework Statement A ball travels vertically upward with quadratic air resistance, find the acceleration component. Homework Equations So, I have x pointing vertically downward and C=0.20 D = Diameter V=velocity W= -mgi R = -C^2D^2V^2 F=ma ma= -mg-C^2D^2V^2 The...

Hi, I am having a little bit of difficulty rotating an assembled component in SolidWorks. I have followed the help file to the letter and for some reason the component is not rotating as expected. I have rotated it using the Triad method described and also by selecting the component and moving...

Hello all, I have an amplifier in mind, you could think of it as an ac coupled differential amplifier, where the coupling capacitance is extremely small (<1pF) and you can assume the input is a sinusoidal differential voltage function. The amplitude of the source is over 1 Million volts...

Hi all, first post here! Homework Statement Find the x component of acceleration. Find the y component of acceleration. The mass of the particle is 2kg. Homework Equations The Attempt at a Solution I've only tried to find a_x. I thought that for finding component values you need to add...

This question was just given on a CEE 270 exam (handwritten by professor). The way it's written doesn't make any sense to me. Homework Statement A force vector \vec{F} = (70.0 \hat{i} + F_{y} \hat{j} + 140.0 \hat{k} ) N has a component of +20.0 N in the direction defined by the vector...

When I'm reading a tutorial about Harmonic Balance algorithm (this is a link to the tutorial website), I'm quite confused by the concept it mentions about the nodal analysis of non-linear components, especially for: The non-linear circuit is modeled by its current function i(t) = i(v_1...

Homework Statement An a.c. voltage, V, comprises of a fundamental voltage of 100 V rms at a frequency of 120 Hz, a 3rd harmonic which is 20% of the fundamental, a 5th harmonic which is 10% of the fundamental and at a phase angle of 1.2 radians lagging. (i) Write down an expression for the...

Homework Statement Find y component of vector C from its length and the angle it makes with the x axis, that is, from geometry. Express the y component of vector C in terms of C and \phi. Homework Equations Vector addition using geometry: 1) C = \sqrt{A^{2}+B^{2}-2ABcos(c)}...

I'm wondering if there's a term for the property of spheres that makes gravity pull equally on all aspects of the sphere's mass. The wording for what I'm asking is tricky, so I'll give an example of a shape that wouldn't have this property, a long prism. If you drop a long prism on an angle...

What is this electrical component "CR"? Hey folks, Can anyone give me a hint to what the CR symbol in this wiring diagram might mean? I'm thinking it is some kind of switch... The equipment is a solar cell tester. Basically it traces I-V curves. In the attached picture the pins...

Homework Statement Resolve the position vector A of the car (measured from fixed point O) into components parallel to OB and OC. Figure: http://screensnapr.com/e/4D2OAz.png Homework Equations Projection of vector A to OC = |A| * |unit vector OC| * unit vector The Attempt at a...

Hello i know how to derive the components of acceleration in other coordinates like spherical start here : http://up.iranblog.com/images/0mbwuclckbu51bxt8jfa.jpg and at last we have : http://up.iranblog.com/images/geotowiaxdya2s6ewxk.jpg also , i know that acceleration is a contravariant...

I'm sure this question gets brought up a lot, but I can't figure out why this is true. Everywhere I look, people simply equate the two as though it's some axiom, but never an explanation for why. It seems to me like E≠m/√(1-v^2) in general.

I am designing a car engine water pump and I want to know where i can find the standards of engine components that i can relay on. I mean what safety factors of stresses ,pressures temps and so on need to be accounted for.

Homework Statement given a certain state |ψ> that is an eigenstate of L^2 and Lz Calculate <Lx^2> and <Lx> Homework Equations L^2|ψ> = l(l+1)h^2 Lz|ψ> = mh|ψ> Lx = YPz - ZPy The Attempt at a Solution <Lx^2> = (1/2)(h^2)[l(l+1)-(m1)^2] for Lx i got <Lx> = ∫ψ(YPz-ZPy)ψ dx

This might be a very stupid question but I can't come up with an answer, I hope you might help. So, I have two vector in a 3D space \vec x and \vec x^\prime. I know that a certain quantity \vec a is defined along the radial direction between the first vector with respect to the second. What are...

Problem - Given the following table x y 15 50 26 46 32 44 48 43 57 40 a) Find the sample mean b) Find the covarince matrix c) Perform principal component analysis and find a size index which explains the greatest variation. My attempt a) n = 5 xbar = Sum(x)/n = 35.6 ybar =...

For example, suppose you have some data where each point takes its value from U(0,1) with probability p and the Cantor distribution with probability (1-p) where p is fixed but unknown. Here the standard MLE approach falls over, so how would you go about estimating p?

an Anaeroplane is flying in the direction 10 degree east of south at 600km/hr.find the component form of the velocity of the airplane assuming that +veX axis represent due east & +ve YaxisRepresent due north

If you have a falling object and wind in the horizontal direction, the object ends up falling to the ground at an angle. Why does the drag force only have a vertical component? Thanks!

Hi, I wish to listplot a list object against a scale that is NOT the component number of the vector, but is actually a well defined function of the component number, and I am lost how to do this? changing "Ticks" didn't help, or I did it wrong, so I am wondering if anyone knows how to do this...

Homework Statement Show that radial components of the continuum electron wave function satisfies the radial equation: {\left[\frac{-\hbar }{2m}\frac{1}{r^2}\frac{\partial }{\partial r}\left(r^2\frac{\partial }{\partial r}\right)+\frac{\hbar ^2l(l+1)}{2m r^2}-\frac{Z e^2}{r}\right]R=E R}...

If u have conducting spherical which is not hollow. We know from guass law that the outter component is experienced electrical force from the inner component. But why the inner isn't experienced the force from the outter. Please show and proof it in mathemetic and describe in the qualitative...

A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 17 m/s at angle of 52◦ above the horizontal. The top of the fence is 7 m high. The ball hits nothing while in flight and...

Why is it that the Energy of a system is identified with p_0 and not p^0? This is especially concerning to me in non-Minkowski metrics, such as the Schwarzschild metric, where the difference between p^0 and p_0 can be quite dramatic. In the schwarzschild metric, we have: p_0 = -\tilde{E}\,m...

Apostol in his "Mathematica Analysis" defines something called a "component interval". However, I cannot find it anywhere on google or in other books I have on analysis, and I really would like to see a picture of what he means.. Apostol's definition is that the component interval of an open...

Homework Statement A 76-kg crate starts from rest at A and is moving at 8 m/s. Using integration, find the work done between A and B of the variable x component of force F= 756 N. (See attached jpeg for the geometry of the problem) EDIT: We are doing a variation of the problem shown in the...

Homework Statement Find a basis for the orthogonal complement of the row space of A: A = [1 0 2 1 1 4] Split x = (3,3,3) into a row space component xr and a nullspace component xn. The Attempt at a Solution For the first part of the problem I took A to RREF R = [1 0 2 0 1 2]...

I am reading a paper and the authors read the tt component of the metric from the line element ds^2=f(r)[g(r) dt^2+h(r) dr^2] as g_{tt}=g(r) instead of (what I expect to be) g_{tt}=f(r) g(r) Could somebody please explain to me why? Thank you.

[b]1. A 0.20kg ball with an initial velocity of (26i-1.6j)m/s collides with a vertical wall. The wall exerts a constant force of -175i N on the ball and the ball's final horizontal velocity component is -15i m/s. Find the final vertical velocity component of the ball. [b]2. I know how to...

Hi all I hope you can help I'm really racking my brains about this! The question simply states that a cannonball is fired over a wall 40m away and passes directly over the wall at a height of 15m. Find the vertical component of velocity? I've been searching the net and apparently when V...

I'm trying to follow the math in Wald's General Relativity where he starts out with the equation for covariant derivative: \nablab\omegac = \partialb\omegac - \Gammadbc\omegad He uses that to derive the equation for a double covariant derivative: \nablaa\nablab\omegac =...

Homework Statement A jetliner is moving at a speed of 233 m/s. The vertical component of the plane's velocity is 66.9 m/s. Determine the magnitude of the horizontal component of the plane's velocity. The Attempt at a Solution 233m/s^2=66m/s^2+x^2=233.189135m/s 66m/s cos(90)=0 I am...

Two geological field teams are working in a remote area. A global positioning system (GPS) tracker at their base camp shows the location of the first team as 38 km away, 19° north of west, and the second team as 29 km away, 35° east of north. When the first team uses its GPS to check the...

For -\frac{1} {4} F_{\mu\nu} F^{\mu\nu} We can write -\frac{1} {4} F_{i j} F^{ij} -\frac{1}{2}F_{0i} F^{0i} Where F_{\mu\nu} \equiv \partial_\mu W_\nu-\partial_\nu W\mu If there are 3 indices how can I separate them like this? I want to separate \frac{1} {12} G_{\mu\nu\rho}...

Homework Statement Consider the two vectors A=ai and B=3i+4j. What must be the value of a if the component of A along B is 6? Homework Equations The Attempt at a Solution I've arrived at the correct answer by finding the angle between the x component of B (3) and B itself which...

Vector Component Words Problem, please help :( A golfer lines up for her first putt at a hole that is 13.5 exactly northwest of her ball’s location. She hits the ball 13.5 and straight, but at the wrong angle, 40 degree from due north. a)In order for the golfer to have a “two putt green,”...

Homework Statement an electric dipole is placed in the x-y plane, with the positive charge +q placed in position (+a, 0) and the negative charge -q placed in position (-a, 0) define r(subscript +) and r(subscript -) the vectors connecting the point defined by r and the two points (+a, 0)...

Homework Statement Okay, I'm reopening this question because I didn't understand it as well as I thought I did. "a) Write r-hatc and phi-hat in hybrid component form ( )i + ( )j where the parentheses represent polar coordinate expressions. b) Now use these hybrid expressions to take...

Homework Statement Consider a generic point (-x,0,0). Calculate the distancrs of this point from all charges: q at (-a,0,a) q at (a,0,,a) -q at (-a,0,-a) -q at (a,0,-a) and calculate the total electric field generated by each of them in terms of these distances, and the magnitude of...

Express each force as a Cartesian vector and then determine the resultant force F. Find the magnitude and coordinate direction angles of the resultant force and sketch this vector on th coordinate system. There's a drawing of 1 force(F2) of magnitude 130N, along the negative z direction(-z)...

What is the most mechanically complex component of an automobile? Someone told me that an automatic transmission is more complex than an electronic microchip. I do know a tiny bit about auto mechanics, but not much. Manual transmissions are relatively simple, mechanically. It's called gear...

Hi! I reallyreallyreally need ur help with this. ex.1 To find the vertical and horizontal components of the force mg, I need to use the given angle \beta. The problem is I don't know how to use it. I have tried to use the corresponding angles postulate. But I can't make it to work. How should...

Homework Statement The problem is from Mathematical Methods in the Physical Sciences, 3rd Ed. Ch10, Sec. 10, Q4. My question is a bit subtle as I have actually figured out the problem, just that I don't understand my solution. The problem reads: 4) What are the physical components...

Homework Statement Hi, following graphic is given (attachment) Homework Equations - The Attempt at a Solution I tried it with the following equation: \omega iL-\frac i {\omega C} + X =R but I don't get to the solution, is this the right attempt? If yes, I'll try later...

Why is the Time component in the Space Time Interval negative? The space time interval is defined to be: ds^2=dt^2-dx^2-dy^2-dz^2 or depending on the convention used it may also be: ds^2=-dt+dx^2+dy^2+dz^2 The equation is defining distance using the pythagorean theorem. This results...

Homework Statement Add the following vectors using component method: Vector A=175km; 30 degrees north of east Vector B=153km; 20 degrees west of north Vector C=195km; West a)Find x and y component of each vector b)Solve for the magnitude of resultant vector c) Solve for direction(angle)...

This is for all you System guys. What are the classifications for a valve to be considered an Active Component? Also, if the valve is classified as an Active Component does it automatically mean that the valve is a Safety Related Valve? I have several valves in my system (Check, Control...

Hello, This component has very little information on the internet. I learned the classic exploitation of it with 2 transistors(attached) and I get that. But i feel that is just an analogy. Does anybody here at PF EE know the details behind this component like, explanation with junctions...

Homework Statement I was following through the notes I took in my Calc class, and either I wrote down the formulas incorrectly, my professor did this problem incorrectly, or I wrote the answer down incorrectly. I'm just going to redo it here, so could someone give me a thumbs up or thumbs down...