Components Definition and 911 Threads

searching for equation for translational equilibrium for horizontal components of force

I have attached a circuit I am trying to analyze, Is it possible that Q is not sensitive to the value of C? I solved my transfer function Vo/Vi, and I get (2/c^2R^2)/(S^2 + S(1/RC) + 1/(R^2C^2)) Which looks plausible at the present time, however when I solve for Q, get 1 here? It is...

Hi i am having some obstacles in building up my concept in dc circuit First of all, as we know, voltmeter is made up of a series circuit with both ends connected to two points of other circuits, while inside the series circuit, a galvanometer and resistor is connected in series. How the...

Homework Statement A horseback rider is pulling a log behind him attached via a rope. The force of tension along the rope is 2000 N. What are the vector components of this force given the length components of the rope? The length components are x=1.5m y=2m z=2m. This problem is 3D so there are...

Homework Statement A 525 kg boat is sailing at 4.5 m/s, east. One minute later it is sailing at 3.5m/s, 45 degrees. During this time, 3 forces act on it. Two of the forces are 25 N,78 degrees, and 32 N, 21 degrees. a) find the horizontal and vertical components of the initial and final...

Homework Statement There is no variable for it but we know the angel σ, g, the mass of m1 and m2, m2>m1 and the coordinate system must be considered like that. I know the other method which the coordinate system is parallel to the inclined plane's hypotenuse. Homework Equations F=m*a...

Which components of the force create Rotational motion?

Hey there. Was given this sheet a while ago. Went over it in class a week ago, completely forgot everything about it today (This is a fresh sheet, lost the one I did.). Have an NAB tomorrow, and couldn't find my physics teacher today to get this worked out. So, the problem is that I have...

Hello, I was solving a vector & moments question as a part of my revision and got stuck somewhere. I really need your help.. some sub-questions are solved, please correct me if I'm wrong. Here's the question (Its kinda long) : The free-body diagram shows three forces that act on a stone...

Homework Statement I attempted this problem, and i have a midterm tommorow. I thought my approach was correct but I don't have a clue if it actually is. I drew a simple right angle triangle according to the information given in the question. A ball swings in a vertical circle at the end of a...

Homework Statement W is 8 units in the y-z plane in a direction defined by theta = 120 degrees with respect to the y-axis and have a positive z component. Homework Equations Wy=Wsin(theta) R^(2)=Rx^(2)+Ry^(2)+Rz^(2) The Attempt at a Solution Wy=Wsin(theta) Wy=8sin(120) =6.9...

<< Original post restored by Moderators after being deleted by riseofphoenix >> While you are packing up to drive to school, you forget your laptop on the roof of your car. As you are driving west towards school at v = 45 mi/hr, you suddenly remember the laptop, roll down your window, and put...

Homework Statement Consider a plane with the outer normal unit vector of (1/√2, -1√2, 0). There is a force of (2,1,5) acting on the surface. What is the component of force normal and parallel to the plane? What is the maximum parallel component to the plane? I would like to check my answers...

Homework Statement 2 kg mass swings on the end of a rope as shown in the figure below. At the highest point in the trajectory the string makes a 56 degree angle with respect to the horizontal and the tension on the string is 16.25 N. = (No Response) N Homework Equations So I know I need to...

Homework Statement A is a vector Show that: a1 = x hat (dot) A a2 = y hat (dot) A a3 = z hat (dot)A Homework Equations A= (a1*x hat) + a2*y hat) + (a3* z hat) The Attempt at a Solution my hint says to take the dot product of...

Homework Statement Assume that you have a configuration of conductors with varying electric potentials applied to each. You make the following measurements of the values of the electric potential at different points in a two dimensional grid: X = 0.0 cm Y = 0.0 cm V = 2.0 volts X = 2.0...

As the title suggests I am working on some general relativity and combinatorics seems to be my ever-returning Achilles heel. I have a four dimensional tensor, denoted by g_abcd with a,b,c,d ranging between 0 and 3, which is fully antisymmetric, i.e.: it is zero if any of the two (or more)...

Homework Statement Let resultant vector A = 17 i hat - 42 j hat and resultant vector B = 31 j hat + 18 k hat. Find the resultant vector C such that the sum of resultant vector A, B and C equals resultant vector zero. Find the i,j and k components of resultant vector C. Homework Equations...

Homework Statement A car drives north at 48mi/h for 10 min and then turns east and goes 5.0 mi at 66mi/h . Finally, it goes southwest at 36mi/h for 6.0 min. Determine the car's displacement. Assume that the positive x and y axes are directed to the east and north, respectively. Answers...

Vector A is in the direction 41.0 degrees clockwise from the y-axis. The x component of A is = -15.0 . A)What is the y component of vector A? B)What is the magnitude of vector A? I got -13.0m for part a, and 19.8m for part b, but mastering physics says they are wrong. Any ideas?

An object undergoing parabolic motion travels 100 m in the horizontal direction before returning to its initial height. If the object is thrown initially at a 30° angle, determine the x component and the y component of the initial velocity. (Neglect any effects due to air resistance.) I am...

In this excerpt from the notes of Sean M. Carrol, he says: "Einstein’s equations may be thought of as second-order differential equations for the metric tensor field gμν. There are ten independent equations (since both sides are symmetric two-index tensors), which seems to be exactly right...

Homework Statement Two beetles run across flat sand, starting at the same point. Beetle 1 runs 0.50m due east, then 0.80m at 30° north of due east. Beetle 2 also makes two runs; the first is 1.6m at 40° east of due north. What must be (a) the magnitude and (b) the direction of its second run...

Homework Statement The z component of the force F is 80 lb. (a) Express F in terms of components. (b) what are the angles
x,
y, and
z between F and the positive coordinate axes? Homework Equations The equations that I attempted to use were directional cosines, trignometric...

I need to make a synchronous demodulator using basic components (op-amps, etc...) and I was wondering if anyone has currently made one. I want to avoid using an custom IC chip unless there is one available. I was looking into the Analog's AD630 and TI's INA143 (which they claim can be used as...

Hi eveyone, I am new to this forum and I hope that I can gain lots from this forum. Recently, one question comes into my mind, that is about the possibility of splitting the electric component and magnetic component of EM wave. This two components seem to always stick together. However, if...

Homework Statement Find the components of the vector A with length a = 1.00 and angle=20.0° with respect to the x-axis as shown. Enter the x component followed by the y component, separated by a comma. Homework Equations none The Attempt at a Solution To find the X-component...

Homework Statement In the oblique coordinate system K' defined in class the position vector r′ can be written as: r'=a\hat{e'}_{1}+b\hat{e'}_{2} Are a and b the covariant (perpendicular) or contravariant (parallel) components of r′? Why? Give an explanation based on vectors’ properties...

Homework Statement What is the electric field at a point when the force on a 1.05μC charge placed at that point is (3.0i-3.9j)x10^-3 N? (E=αi+βj N/C). a) Find α b) Find β The Attempt at a Solution first i took the force and solved for the vector sum of the components: √[(3x10^-3)^2 +...

When you need a component (ex. SCR) with specific requirements (ex. 12amp max and less than 20mA gate trigger current) how do you go about finding the component? How do you know what's out there for purchase in extremely small quantities (like just a few). This always becomes a problem when I am...

I am looking for an efficient procedure to find the natural frequency of a system comprising more than two components. Like I have an assembly of system comprising compressor, condenser, piping, fan, fan bracket, and frame. I have all the designs and dimensions of the total model. How can I find...

I see some trouble with how symmetrical components are treated. In lots of texts, I have heard something along these lines When the current in a 3 phase motor is unbalanced, we can resolve it into three sets of balanced currents. 1. Positive sequence currents. These produce rotating magnetic...

I have a physics book that says the electrons orbiting an atom are responsible for the physical and chemical properties of that atom. And yet I have managed to find another source which says the number of neutrons can affect the "Density (mass/volume), boiling point, freezing point, and the...

Homework Statement 4.9b cites the y components to be sin degree and 4.9a is somehow cos degree for the x components (see picture) Homework Equations Here's a different textbook that supports my claim (see picture) The Attempt at a Solution Shouldn't the y components for problem 4.9b be cos...

Homework Statement Please see attached photos. I've been drawing and re-drawing diagrams but I'm at a loss. For part a, I've tried a right triangle using the top cable as the hypotenuse. I've tried the force equation (ƩF=ma) but I don't think that's right. I just can't get a start...

Homework Statement A 1200-N uniform boom at ∅=55° to the horizontal is supported by a cable at an angle θ=25.0° to the horizontal. The boom is pivoted at the bottom and an object of weight 2 000 N hangs from its top. Find (a) the tension in the support cable and (b) the horizontal and...

Hi all, I'm now reading Chap 11 of Gravitation by Wheeler, etc. In exercise 11.7, by introducing Jacobi curvature tensor, which contains exactly the same information content as Riemann curvature tensor, we are asked to show that we can actually measure ALL components of Jacobi curvature tensor...

What does the the cross product of two acceleration vectors do? (a cross ar) = 0 where a =axi + ayj + azk and ar = arxi + aryj + arzk (a cross ar)x = ay*arz - az*ary (a cross ar)y = az*arx - ax*arz (a cross ar)z = ax*ary - ay*arx It gives the perpendicular components of each. In the...

maybe its simple permutation and combination technique... I ve tried to resolve it on my own but I couldn't...The textbook which I read simply mentions it to be obvious..can anyone please elucidate me the logic behind factorials of "independent components of tensor curl" and levi cita Can...

Hi, Consider P = \boldsymbol{\nabla} f +\boldsymbol{\nabla}\times \bold{A} where f and A are scalar and vector potentials, respectively, and P is strictly positive and well behaved, and only nonzero in a domain \mathcal{D}. I want to find how the magnitude of \int \boldsymbol{\nabla} f dV...

I have some car engine related questions, but basically just physics. -Do different specific heat capacities have anything to do with how certain materials resist heat? I know that on some engine compartments there is gold wrapping because it resists heat best, but it has a low specific...

I've been trying to calculate the Riemann Curvature Tensor for a certain manifold in 3-dimensional Euclidean Space using Christoffel Symbols of the second kind, and so far everything has gone well however... It is extremely tedious and takes a very long time; there is also a high probability...

Homework Statement I solved this problem simply by substituting the initial and final velocities in vector form and applying the principle of conservation of momentum, but there's something I don't understand about this problem. "Two small smooth spheres A and B have equal radii. The mass...

Hello I am trying to model in LTspice a matrix for symmetrical components. Keeping to the theory, the 120° delays were built with tlines, which means that whatever signal there is at the input, after the delay it becomes x(t-2*π/3), meaning multiplying with a2(=e-j*2*π/3). (to avoid such a long...

Homework Statement Let V = Gen{ [0;5;1;2], [4;0;-2;1], [5,1,0,1]}. Define u11=v1. Indicate the coordinates of u2, the orthogonal component of v2 to V1=Gen{u1. Homework Equations I know V has to be a vector space. If there is a subspace W with an orthogonal basis B={v1,...,vk} then the...

The following problem is one I have contrived by my own ability, so if there is any error please let me know. Say I have a box, with a chain attached at one of the edges of the box, and I apply 10 N pull at a 40° angle with the surface of the box. Now I know we sometimes resolve vectors into...

How in a series circuit do the components know how much of the "electricity" to use? How does this happen? Why doesn't the first lamp in a series use all the volts? How does it know if there are any other lamps in the circuit? Any help would be greatly appreciated. :)

A scalar like electric potential. Say I have a positive charge, and 4m to the right, and 3m up is a point P. If I wanted to calculate the potential at point P, I'd use V=kQ/r (r=√(4^2 + 3^2)). But I'm confused about why finding the potential at 4m to the right (the x component), and the...

I am looking at a building with a car park in Sydney. Electrical circuits are run on perforated cable trays at high level. I understand that the trays require earthing, however, I'm trying to determine the extent. The trays are made from galvanized sheet and come in 3 meter lengths and are...

Homework Statement Let \vec{R} = (t + \sin t) \hat{i} + (t + \cos t) \hat{j} denotes at time t the position of a moving particle. Determine the radial and circumferential components of acceleration as a function of t. Homework Equations v_r = \dot{r} v_{\theta} = r\dot{\theta}...