Components Definition and 911 Threads

if a body that is going in space in a straight line and suddenly 2 forces acts on it the first with the motion direction and the other is perpendicular to the motion direction , would the object start to go in circles ? or it will change its direction of motion and will keep going sideways ...

I have a apparatus with a thin electrode that is suppose to be parallel with surface beneath it. I can level the surface, but you cannot put a level on this electrode. I was thinking have like a block precisely made to the expected distance between the electrode and bottom to determine the...

As stated in title: I have full knowledge of the 2 signals. They have the same Power Spectral Density. However, only certain components of the 2 signals have the same phase. Is there any way of extracting these components, or at least their PSD functions? Is this doable at all? The phase I...

Ive recently completed a project in microcontrollers (my first project with uc's actually) and I built a power supply which gives me 12v and 5v dc. I use a transformer to step the voltage down to 12v AC from mains and then the 12v AC is converted to 12v dc using a bridge rectifier with a...

So I have an LC circuit at resonance except the capacitor gets very hot. There is about ~2Amps AC going across it. The setup is: 2x 0.1uF capacitors in parallel ~304uH inductor the ESR of the cap is 0.56ohms and the resistance of the inductor is ~0.7ohms. I was looking for the...

here is the question: http://i44.tinypic.com/xe53tc.gif here is the solution: http://i43.tinypic.com/2nuokfq.gif my first question regarding this whole thing is. why when the doing the partial derivative by "r" we don't multiply by minus the formula says (minus derivative) but all they do is...

Homework Statement A plane flies from base camp to lake A, a distance of 280km, at a direction of 20 degrees north of east. After dropping thr supplies, it flies to lake B which is 190km and 30 degrees west of north from lake A. Determine the distance and direction gtom lake B to the base...

Hi guys, I am a physics graduate, currently working in an experimental lab. Before coming here, I have no solid experience in lab stuffs. Anyway I enjoy working at lab a lot. The first task I have is to learn and master a programable DC source (Yokogawa 7651). To do this, I personaly think...

Okay, let's say there's vector a,b and c What would be the difference between projection of c on a and b and components of c along a and b I thought they were the same... thanks.

I'd like to breadboard a surface mount IC for testing. Is there some type of connector that can be purchased to plug the IC into which will provides wire leads for breadboarding? Failing that, I guess I could try to solder leads to the IC. But at 3mm x 3mm and 10 pins, I think that's next to...

Initial Velocity of Projectile given: - let theta be: B -equation for: (E1)horizontal component is x = vxt; where vx= v0cosB (E2)vertical component is y= y0 +vyt - (1/2)gt(squared); where vy = v0sinB using these components an equation of initial velocity{v0} =...

The tidal range of spring tides is about 3.2 m and tidal range of neap tides is about 1.8m, Assume the only tidal components are m2 and s2 tides. i.e 2 tides per day due to the sun and moon. Find the amplitude of these components and also find the maximum phase angle between the m2 tides and...

Homework Statement Using a coordinate system in whic x and y are due east and nort of the city and z is the radial distance outwards from te centre of te earth, find the compnents of w the Earth's angular velocity vector. You may assume that the latitude of the city is lamdba = 34degrees...

Homework Statement A hungry bear weighing 720 N walks out on a beam in an attempt to retrieve a basket of food hanging at the end of the beam. The beam is uniform, weighs 200 N, and is 5.40 m long; the basket weighs 80.0 N. a) When the bear is at x = 1.00 m, find the tension in the wire and...

Homework Statement I'm just working through a textbook and there's a line in which I'm clearly missing something. What I want to do is show that from: [tex] \bar{h^{TT}_{\mu \nu}} = A^{TT}_{\mu \nu} cos(\omega (t-z)) [\tex] to [tex] h^{TT}_{\mu \nu} = B^{TT}_{\mu \nu} cos(\omega (t-z))...

Homework Statement the boy of mass 40kg is sliding down the spiral slide at a constant speed such that his position, measured from the top of the chute, has components r=1.5m, theta=.7t radians, and z = -.5t m, where t is in seconds. Determine the components of force for F(r), F(theta), and...

Hi All, I am a beginner at Electromagnetics I'm implementing ray tracing SBR to predict propagation of waves. Each ray contribution will be in the form of: Ei = (some factors) e ^ (- j k r) u(theta, phi) where k = 2 pi / wavelength, r is the total unfolded path I'm not sure about...

6.60 -micro C particle moves through a region of space where an electric field of magnitude 1200 N/C points in the positive x direction and a magnetic field of magnitude 1.01T points in the positive Z direction if the net force acting on the particle is 6.23 x 10^-3 N in the positive x...

I have been given the following components to design a 4 to 16 decoder: I. One 3 to 8 decoder (with enable) II. Two 2 to 4 decoder (with enable) III. Two NOT gates IV. Two AND gates I just don't understand where the AND, NOT, and enables go into. I have attached two files One with the 3...

Hi! I'm writing a pool simulation program and have an awful problem with my ball collisions (elastic collisions). The theory (in terms of vectors) is that when two balls collide you take the line between their centers and the velocity components which are perpendicular to this line are...

I have three questions left to do and its been very hard because I am out of state with the family and had forgotten to pack my physics book. I really need help on this, I can't find any examples from typing in parts of the question. If you could help me on how to solve this and the equations...

Homework Statement Consider wavefunction psi (subscript "nlm") describing the electron in the stationary state for the hydrogen atom with quantum numbers n,l,m and the third component L3 for the orbital angular momentum operator L. What is the expectation value of L3 and of L3^2 for the...

Three forces acting on an objetc are given by F1=(-2.00i + 2.00j)N, F2=(5.00i - 3.00j)N, F3=(-45.0i)N The object experiences an acceleration of magnitude 3.75 m/s2. a) What is the direction of the accceleration? b) What is the mass of the object? c) If the object is initially at rest, what is...

The problem states that a plane approaching a mountain peak at a speed of 50 m/s is located at a vertical distance of 100.0 m above the peak. I calculated the distance at which the plane should release the package so it lands on the peak (first question), but the second question ask what the...

Homework Statement To state the uses of Capacitors, Resistors and Diodes in Laptop computers, Midi sound systems and Ipods Homework Equations The Attempt at a Solution I've looked around on the internet and tried a good few books but I can't find the specific information. I've...

I am trying to plot the components of the strain EXX,EYY and EXY in a 2D framework in MATLAB. The tensor matrix i have is B[exx,exy;exy,eyy]with each component 32x32 array. The values of Eyy is zero does that mean that there is no strain in the y direction between the two entitie sthat I am...

Determine the x and y components. A 40 lb force vector that makes an angle of 120 degree counterclockwise from the -y direction. I did Ax= (40)(-cos120 degree) and Ay= (40)(sin120 degree) I got the right answer, I just want to make sure that this is the correct way of solving the problem.

I am having some trouble with this question. Determine the x and y components of the following two vectors in the xy plane. (A) A 25- m/s velocity vector that makes an angle of 40 degree counterclockwise from the -x direction. (B) A 40lb force vector that makes an angle of 120 degree...

Errror Quoted for Electrical Components. What is it? (Where do I post electrical engineering homework questions? I'm home. I'm working. OK, maybe I'm not really working.) Manufacturers quote a percent variation from nominal value for their parts. What does this percent error even mean...

Vector A has a magnitude of 17 (in some unspecified units) and makes an angle of 27° with the x axis, and a vector B has a length of 26 and makes an angle of 75° with the x axis. Find the components of the vector in the following. (a) C = A + B ( , ) (b) C = A - B ( , ) (c)...

Homework Statement which of the following pairs of quantities transform under rotations of the axes as the components of a two-dimensional vector? a) (x2, -x1) b) (x2,x1) c) ((x1)^2,(x2)^2) Homework Equations The Attempt at a Solution Dont know where to start. i'd appreciate...

Homework Statement x1,x2) are the components of a 2 dimensional vector r when referred to cartesian axes along the directions i,j. derive the relations x1'= cosΘ x1+sinΘ x2 x2'=-sinΘ x1+cosΘ x2 for the components (x1',x2') or r referred to new axes i',j' obtained by a rotation of the axes...

Homework Statement A car is driven east for a distance of 55 km, then north for 34 km, and then in a direction 30° east of north for 23 km. Draw the vector diagram and determine the total displacement of the car from its starting point. Homework Equations the answer = arc tan (ay/ax)...

Homework Statement "a" vector - "b" vector = 7m(i) + -3.5m(j) + -4.5m(k) A third vector "c" vector pops out of nowhere. Find the new unit-vector notation such that "a" vector - "b" vector + "c" vector = 0 ?m(i) + ?m(j) + ?m(k) Homework Equations a - b + c = 0 The Attempt at...

Homework Statement the displacement vector A has scalr omponents of Ax= 80.0 m and Ay= 60.0 m. the displacement vector B has a scalr component Bx= 60.0 m and a magnitude of B=75.0m. The displacement vecto C has a magnitude of C= 100.0 m and is directed at an angle of 36.9 degrees above the +...

I've been stuck on this problem for too long and need help. Please explain the answer if possible. F1 has a magnitude of 8.80 n and is directed at an angle of \alpha= 65.0 above the negative x-axis in the second quadrant. F2 has a magnitude of 6.40 N and is directed at an angle of \beta =...

A test car travels in a straight line along the axis. The graph in the figure shows the car's position as a function of time. (attached figure) Find the x component of instantaneous velocity at points A-G. Could someone please tell me how I'm supposed to go about this problem? I know C...

Homework Statement Two forces are acting on a mass. One of the forces is a 40.0 N force and the other force is 30.0 N at the angles shown below: The magnitude of the force is: a) 15.3 N b) 15.6 N <-- correct answer c) 46.6 N d) 69.0 N Homework Equations Pythagorean Therom...

Homework Statement Vector A = (2x-y)m and Vector B= (x+ay)m (a is alpha, m is meters) If |A+B|=5m, determine the possible values of a.Homework Equations The magnitude of A= sqrt 5 The Attempt at a Solution |A^2 + B^2|=5^2 |(2x-y)^2 + (x+ay)^2|= 5^2 |(2x-y)^2 + (x+ay)^2|= 25 I cannot figure...

Hi there, I've been given this task to recognize the different types of power poles and their electrical equipments. The images are in the following link. I have encircled the equipments and components that are needed to be NAMED. http://www.geocities.com/flabberguest_gabcraft/powerpoles.JPG...

Of Capacitors and Inductors which is passive or active ? And by what definition ?

Homework Statement The components of a vector V are often written (Vx, Vy, Vz). What is the z component of a vector which is the sum of the two vectors, V1 and V2, whose components are (2.61, 1.72, 0.00) and (3.84, -4.54, -1.90)? b) Calculate the length of this vector. Homework Equations The...

Hi! In a non-uniform circular motion if I have two components of a vector in cartesian coordinates then how to find the tangential and radial components of a vector. For example ; I have Vx and Vy as horizontal and vertical components of a vector V respectively. Vx and Vy can lie in all...

I'm studying for an exam and can't seem to get this last practice problem! I've tried many ways but still keep getting the wrong answer. The professor has already given us the correct answer to the problems, but I want to know HOW to do it for the exam! Thanks in advance :) A boat radioed a...

Hello, I perform FEA (finite element analysis) and write massive amounts of VBA code in Access in order to streamline heat exchanger designs and I have a Boss with no experience with Tensors and the ASME (American Society of Mechanical Engineers) Section VIII, Div. 2 requires one to calculate...

I'm ready to begin proof of concept experiments on the Mk IV Tesseract, following on the limited success of https://www.physicsforums.com/showthread.php?t=205845" What I need is a motor that - is reasonably compact (we're talking <2 centimeters) though weight is not a factor - can be...

Seen as i had difficulty understanding this little topic and with my AS level exam soon, i figured i should find somewhere to ask without having to wait while class, so here goes... I had some questions to do (but this isn't about homework!) i couldn't seem to be able to get the right answer...

Homework Statement The general equation of motion of a non-relativistic particle of mass m and charge q when it is placed in a region where there is a magnetic field B and an electric field E is m\bold{\ddot{r}} = q(\bold{E} + \bold{\dot{r}} \times \bold{B}) where r is the position of...

Hello all, I'm just trying to find a distributor that will sell high frequency piezoelectric ceramics in a small quantity. There are a ton of distributors, but they want purchases in bulk. I'm just a lowly stage actor who has an idea, and I want to figure out a way to test the relation...

This may not be a differential geometry question (and a posting of this in Linear & Abstract Algebra forum didnt help either) but Hodge dual is used in diff geom in a slightly different form. Hence posting here: If A is a p-vector, then the hodge dual, *A is a (n-p)-vector and is defined by...