Equivalent Definition and 1000 Threads

Homework Statement I am asked to find the equivalent resistance of a simulated inductor shown above. We are told not to worry about the simulated inductor circuit. The simulated inductor will be incorporated into a larger circuit as shown below. 2. The attempt at a solution I am really...

Homework Statement I'm trying to find the equivalent capacitance for a circuit, but I keep getting stuck. Homework Equations C(parallel)=C1+C2+...Cn C(series)={(1/C1)+(1/C2)+(1/C3)+...(1/Cn)}^-1 The Attempt at a Solution See the first penciled attachment.

Homework Statement Homework Equations Resistors in series (in a straight line) add. Like R + R = 2R. And if in parallel, they inversely add. 1/R_total = 1/R1 + 1/R2 So, I have no idea how to "simplify" this. Basically trying to find the total resistance. Thanks.

Hi Can you please tell me how to find the Norton Equivalent or I should say the short circuit current in the attachment diagram? Norton resistance using two different methods but now question asks me to find resistance by dividing voltage of open circuit which I figure it out over current...

I am using Triacetin as a plasticizer. It will be mixed with R45 resin and cured with an isocyanate. It is easy to calculate the amount of curative when the EW is known for the substances. I can't seem to find any such info on Triacetin. I can't find EW, hydroxyl number, hydroxyl value or %OH...

I have read the basis of the the equivalence principle, that inertial mass = gravitational mass, and that it leads to the conclusion that any acceleration = equivalent gravitational field intensity. (I believe 'gravitational field intensity' is the same as 'gravitational acceleration'.)...

Is there one? Or do I really have to write something like this: from numpy import * with open('file.txt','r') as f: #read only data, ignore headers lines = f.readlines()[31:] # convert strings to floats and put into arrays for i in xrange(len(lines)): s =...

Hi everyone, First off I do realize that I can't directly convert force to velocity. My scenario is that I have a machine part and I have found that it begins to crack when a point load of approx 2800N is exerted onto its tip. What I am trying to calculate/approximate is if I dropped the...

Homework Statement A circuit extends forever to the right, and all the resistors have the same value ##R##. Calculate the equivalent resistance measured across the two terminals at left. Homework Equations The series and parallel equivalent resistance equation. The Attempt at a...

What is the exact definition for equivalent matrices? Is it necessary that it should be A = B if A,B are two matrices? Thanks a lot.

Homework Statement A solution to a problem has following operation: here, [(a,b)] and [(m,n)] are two equivalence classes. [(a,b)]+[(m,n)]=[(an+bm,bn)] Is not [(a,b)]+[(m,n)]=[(a+m,b+n)]? Can anyone explain it to me? Homework Equations The Attempt at a Solution

Homework Statement This isn't for a class I'm actually taking. Just self study. I'm reading a book on electronics. When I got to the part about Thevenin's theorem I got a little confused. Specifically, I'm confused about the equivalent voltage for the Thevenin equivalent circuit. It said...

Homework Statement Hello. Thats my homework question, so any hints will be appreciated. Paul consumes only two goods, pizza (P) and hamburgers (H), and considers them to be perfect substitutes, as shown by his utility function: (, ) = + 4. The price of pizza is $3 and the price of...

Homework Statement http://i.imgur.com/fSRqw.png Homework Equations V_{th} = V_{oc} The Attempt at a Solution I got the thevenin voltage by using node voltage \frac{V2-40}{5} - \frac{80+2V2}{5} -8 + V2 = 0 (\frac{1}{5} + \frac{2}{5} + 1)V2 = 32 \frac{8}{5}V2 = 32 V2 =...

Homework Statement For the circuit shown in Figure, find the equivalent resistance seen by the source. How much power is delivered by the source? http://sphotos-b.xx.fbcdn.net/hphotos-snc7/304377_496325960386924_988412599_n.jpg Homework Equations Req = R1R2 / R1+ R2 P = V^2 / R Thanks you...

Homework Statement Find Rab https://sphotos-a.xx.fbcdn.net/hphotos-ash4/199915_496321627054024_1130826860_n.jpg Homework Equations Req = R1R2 / R1+ R2 The Attempt at a Solution bottom 2Ω resistors in series ---> Req1 = 4Ω top right 12 and 4 Ω in parallel ---> Req2 = 3Ω this...

Homework Statement Find the Thevenin resistance. http://i.imgur.com/XoEfy.png Homework Equations Rth =Vex/IexThe Attempt at a Solution I found that the thevenin voltage is 869.304mV. I read in my textbook that in order to find the thevenin resistance in a circuit that contains a dependent...

Homework Statement Homework Equations 1/Ceq= 1/C1 + 1/C2 The Attempt at a Solution 1/C13eq= 1/3C1 + 1/5C3 = 8C/3 = 2.67C 1/C12eq= (3C x C)/(3C + C) = 0.75C Ceqtotal = 2.67C + 0.75C = 3.42C I think the series circuit is throwing me off?

Why in the standard model doesn't charge need a boson like mass needs the Higgs boson?

Homework Statement I got this on a quiz today - Find the equivalent resistance between E and F. Now, the problem with this question is that I get TWO different answers when I trace from: 1. e to f 2. f to e I know one of them is definitely wrong (or maybe both are?), but I don't...

In Griffith's intro to QM it says on page 95 (in footnote 6) : "In Hilbert space two functions that have the same square integral are considered equivalent. Technically, vectors in Hilbert space represent equivalence classes of functions." But that means that if we take for example...

Homework Statement Basically, I'm having trouble doing the source transformation and subsequently finding the norton equivalent for this circuit and I don't really know where to start. The circuit is attached where: i=3A V=90V Please help!

Homework Statement Find R_AB in the network. Look at attached file "Problem"Homework Equations R_S= R1+R2+R3+...Rn (for series resistors) 1/RP= 1/R1 + 1/R2 + 1/R3 + 1/Rn... (for parallel resistors) V=IR (ohm's law)The Attempt at a Solution Look at attached file "Problem Attempt" I know I'm...

Homework Statement http://img507.imageshack.us/img507/6493/f7868b61c6cb4d6084fa5ba.png Homework Equations The Attempt at a Solution I've tried to deduct how my textbook has actually done this Thevenin Equivalent. No one in my class (that I've come into contact with anyway)...

I’m curious, but no mathematician. Euclidean geometry is the only type for which I've had training (45 years ago). Apologies in advance for misused terms. A line, as I recall, extends indefinitely in opposite directions. It has no definite “origin” or "center". If we view “translational...

Let $f:S\to T$ be a function. Prove that the following statements are equivalent.a $f$ is one-to-one on $S$. b $f(A\cap B) = f(A)\cap f(B)$ for all subsets $A,B$ of $S$. c $f^{-1}[f(A)] = A$ for every subset $A$ of $S$. d For all disjoint subsets $A$ and $B$ of $S$, the images $f(A)$ and...

hello. thanks for viewing my post. I want to know if there is a way to identify an equivalent force if I transfer the original force to a new location. is that possible? ill give an example. position of original force ----------(known distance)--------------------- desired new position of force...

Homework Statement A block with mass M is held statically on an overhang by a force Mg applied horizontally and the force of friction on the overhang. What are the normal and frictional forces? For what angles θ does the block remain at rest? The Attempt at a Solution In the picture...

Prove that the following are equivalent: a) A is bounded, b) A is "in" a closed ball Homework Statement The full problem is: Let M be a metric space an A\subseteqM be any subset. Prove that the following are equivalent: a)A is bounded. b)A is contained in some closed ball c)A is contained in...

Postulate: EVERY field has a "magnetic" equivalent. Here is a topic which I thought might be important enough to merit its own thread. I apologize for fishing it up off another discussion thread. Here is a thought experiment. Two electrons, fired off near to each other in parallel at...

Hi! I'm having some difficulty understanding how to go about solving the following problem. I'm a beginner at this and am completely lost. I've seen a few similar problems that could be solved with node/current analysis, but I don't really understand if or how to apply that here. Can someone...

[FONT="Arial"][SIZE="3"] how can i solve the equivalent resistance? I assume R = 2 and I = 3, I know I in node A will be divided. It's just that I don't know what direction I will go to solve for Voltage so I can solve the equivalent resistance. Is Req = 4/3 Ω ? on[/b]

A thought experiment ... You have a mass sitting in space far from any source of gravity. We know the energy it contains from e = inertial mass x speed of light squared. Using a different approach, what would you have to sum to get this total energy from properties of the mass such as...

Homework Statement Statement: A set F can never be equivalent to its proper subset E This statement appears in Halmos's Naive set theory in the chapter 13. Arithmatic. He arrives at this statement through the following steps 0. In the previous chapter, he proves the recusrsion theorem...

Find the equivalent resistance of the circuit shown below. Each of the six resistors has a resistance of 12 ohm. I just want to make sure I calculated everything right. I don't have the solution available. Labelling the resistors from my left to the right: R1, R2, R3, R4, R5(bottom), R6...

Homework Statement http://i50.tinypic.com/w0ggl.png Homework Equations The Attempt at a Solution I am stuck at part (a) (i haven't yet tried the part (b)). I really have no clue on how should i go on finding the equivalent resistance, i don't see a way to reduce it to simpler...

According to my book, (\exists!x)P(x) is equivalent to (\exists x)P(x)\wedge(\forall y)(\forall z)[P(y)\wedge P(z)\Rightarrow y=z] But I don't see why the variable z is necessary. Wouldn't the following also be correct but shorter and easier to understand: (\exists x)P(x)\wedge(\forall...

Which position offers stronger evidence? Please vote: No or Yes. Here are a few papers taking each position: 1. No, all calories are not created equally: Evidence: a. Under Free-living conditions: Effects of Dietary Composition on Energy Expenditure During Weight-Loss Maintenance...

Find the equivalent capacitance of the combinations shown in the fig. (refer to the file attached) Is there any easier method to solve instead of this method by assuming a constant potiential difference is applied across the circuit and a total charge Q flown in it.

I don't understand the following step regarding the (i,j)^{th} element of the Fisher Information Matrix, \textbf{J}: J_{ij}\triangleq\mathcal{E}\left\{ \frac{\partial}{\partial\theta_{i}}L_{\textbf{x}}(\textbf{θ})\frac{\partial}{\partial\theta_{j}} L_{\mathbf{x}}(\textbf{θ})\right\} \\...

Homework Statement Consider this circuit. Find the Thévenin and Norton Equivalent Circuits (just need the 1st one). Homework Equations The Attempt at a Solution My attempt: Can someone check? Thanks a lot!

So I was reading up on the Pythagoreans, and I came across this page: http://www.math.ufl.edu/~rcrew/texts/pythagoras.html . I don't see the reasoning behind this statement. I tried some simple algebra on this statement and couldn't get Pythag to fall out of it. Can someone figure out a...

Homework Statement I am attempting to solve problem number 4 from the following picture: http://img641.imageshack.us/img641/7950/imageisx.jpg In the picture you can see the suggested line of "cut" for the first application of Thevenin's theorem. The Attempt at a Solution I...

Homework Statement Find: a) the equivalent resistor seen by the source; b) value of i0; c) value of v; d) value of v0. http://img823.imageshack.us/img823/4406/dasso.jpg Homework Equations Kirchoff's laws and Ohm's laws The Attempt at a Solution To solve b,c,d I need...

Homework Statement Find equivalent resistance in this circuit. (picture is in the attached files section)Homework Equations Series: Req=R1+ R2. . . Parallel: 1/Req = 1/R1 + 1/R2 . . . The Attempt at a Solution It seems to me that the 2nd 2ohm resistor (the one that's pointed vertically) has 2...

Hello, Is \underset{i}{\min}\underset{n}{\max}=\underset{n}{\max}\underset{i}{\min}? Thanks

Homework Statement Calculate the charge on C1 in Coulombs. Homework Equations umm q=CV The Attempt at a Solution http://answers.yahoo.com/question/index?qid=20120424171750AA1WxRv I have this same problem except my numbers are: C1= 6.00 μF, C2=3.10 μF, C3= 2.20 μF, C4= 1.30...

Homework Statement Calculate the equivalent capacitance of the circuit shown in the diagram above; where C1 = 5.30 microF, C2 = 8.45 microF, C3 = 5.65 microF, and C4 = 8.60 microF. Homework Equations parallel: Ceq = C1 + C2 + etc series 1/Ceq = 1/C1 + 1/C2 + etcThe Attempt at a Solution...

Homework Statement Find the equivalent impedance of the infinite series of resistors and capacitors as shown below [FONT="Courier New"] -R----R----R----R----...R----... ____C____C____C____B_______C -r----r----r----r----...r----... Homework Equations 2.1. Equivalent resistance of resistors in...

"Estimated" equivalent resistance Homework Statement Suppose I have a circuit like the one below, how will you "estimated" the equivalent resistance without using calculation? I know how to calculate equivalent resistance by using Formula: R1 * R2 / (R1+R2) . But can anyone use their logic...