Equivalent Definition and 1000 Threads

Hi. Anyone knows how to calculate the Req of this circuit? n tends to infinite.

Hello Guys, I really need help, I am trying to simplify this circuit to calculate Rth and I got stuck.

I have a data entry program in Windows 10 that has no API to interface with it directly. I have a lot of data to enter manually, which is very slow. Assuming I can get that data into a digital form and store it in a .CSV file or clipboard, how can I write a utility app that will sit over top of...

I start from far right: Green and blue are parallel Connection: This in turn is in series connection with black resistor: and so on ... This is what I'm ending up with My final equivalent resistance is (275/17) Ω. Is this correct?

Say I want to determine if a rope/ attachment equipment is strong enough for a person falling at some height. I am unable to have a mass fall at that height so I decide to up the mass and reduce the height. Should I use kinetic energy or conservation of momentum? Because the impulsive force...

I have actually already written out and solved for my own solutions to these problems, but I was wondering if I could get a second opinion on my solutions: For Problem 3: For Problem 4:

Good day I have a problem to find the equivalent resistance from the capacitor point of view the solution says it's R1 but for me we still have R2 and R3 we have not deal with ! many thanks in advance

I am confused. Look for instance cyclic ##C_2## group representation where D(e)= \begin{bmatrix} 1 & 0\\ 0 & 1 \end{bmatrix} and D(g)= \begin{bmatrix} 0 & 1\\ 1 & 0 \end{bmatrix} and let's take invertible matrix A= \begin{bmatrix} 1 & 2\\ 3 & 4 \end{bmatrix}. Then A^{-1}=...

A textbook gives an example of an ideal mass striking an ideal string here: This is drawn as an equivalent electrical circuit as follows, where each R represents one of the two string segments the mass interacts with (ie. the string segment to the left of the mass and the string segment to...

Hey! :o Let $X=(0,1)$. For $x,y>0$ we consider the metrices: $d_1(x,y)=|x-y|$ $d'(x,y)=\left |\frac{1}{x}-\frac{1}{y}\right |=\frac{|x-y|}{|xy|}$ I want to show that these are topologically equivalent but not strongly equivalent. $d_1$ and $d'$ are strongly equivalent iff there are...

I'm trying to find Vth (and then Rth). My work and results don't seem to agree with what my circuit simulation (done on LTSpice) shows. Can anyone point out what may be wrong here?

1. Consider the statement S =[¬(p ->q)]V[¬(pVq)]. (a) Construct truth tables for S. (b) Find a simpler expression that is logically equivalent to S.

Can anyone tell me if I'm doing this right so far? My question really is... does this mean that the next step for me is to expand the last statement shown?Asking because that seems like a lot of work.

Summary: How to find equivalent resistance of the electric circuit? I need to solve the following problem: Calculate equivalent resistance of the circuit (figure1), if all six resistances are the same: r1 = r2 = r3 = r4 = r5 = r6 = 100 Ohm. True answer: 66.6 Ohm. I tried to solve this...

so when I did this problem I did nodal analysis to find the voltage across the 40k resistor, and found it to be 16V. From there I did two source transformations, combined the sources and did some equivalent resistance to get the answer as seen below: However this differed from the answer he...

I am asked to find the Thevenin equivalent for the circuit above. I already got the equivalent voltage by node analysis on the nodes B and A3. What I'm trying to do is to zero the 10V-source and then calculate the equivalent resistance between A3 and GND. Whatever expression I come up with...

The circuit is shown. The explanation says "The total potential difference is 2V." "The total equivalent capacitance is C." Since there are 4 parallel capacitors, isn't the equivalent capacitance 4C and total potential difference 4V?

It seems as though i1 and i9 are in series with the current source. That's my reasoning for the answers a and c. For b, it appears as though there's still an unbroken series connection which just leaves V = I * R. I put question marks because I don't know if they're right or not; there's no...

Dear Every one, I am having some difficulties on exercise 2b and 2c from Topology 2nd ed by J. Munkres . Here are the directions: determine which of the following states are true for all sets $A$, $B$, $C$, and $D$. If a double implication fails, determine whether one or the other one of the...

I am currently in need of a MOSFET to replace the AUIRLR2908 I am currently using. This power MOSFET is used in enhancement mode for switching. The data sheet is attached for reference. What are some of the key parametrics I should be concerned with when trying to find a drop in equivalent...

I've noticed that for both the surface of a sphere and a paraboloid, one arrives at the same Christoffel symbols whether using \Gamma^i_{kl} = \frac {1}{2} g^{im} ( \frac {\partial g_{mk} }{\partial x^l} + \frac {\partial g_{ml}}{\partial x^k} - \frac {\partial g_{kl}} {\partial x^m} )...

i was trying to calculate equivalent resistance of this circuit and that was my attempt : 1) i can see two parallel 20 ohm resistors so equivalent resistance = $${20 \over 2} = 10 ohm$$ 2) now we are left with 20 ohm resistor and 10 ohm resistor which are connected in series so equivalent...

I was trying to understand the topic of time dilation in a gravitational field, and I found these two formulas: G = constant grav. m = mass of the planet or star under consideration g = 9.81m / s ^ 2 H = height at which the second clock is located with respect to the first which is on the...

i had a problem in my textbook asking me to get equivalent resistance of a circuit , i ended up getting 23.7 ohm as my answer but my textbook says that the correct answer is 100 ohm you can see my attempt here : imgur link : i really want to know what went wrong with my steps thanks in advance

The anthropic principle is a philosophical consideration that observations of the universe must be compatible with the conscious and sapient life that observes it. There are two main types of anthropic principle: Weak Anthropic Principle (WAP) and Strong Anthropic Principle (SAP) The Strong...

Hello, I am currently working on this task here. Given is a Toffoli gate. Now it is stated that there is an equivalent quantum circuit. I tried to show the equivalence, for example by looking at case ##|111\rangle##. However, with what I have calculated so far, I do not come to the...

I am reading Karl R. Stromberg's book: "An Introduction to Classical Real Analysis". ... ... I am focused on Chapter 3: Limits and Continuity ... ... I need further help in order to fully understand the proof of Theorem 3.43 on pages 105-106 ... ... Theorem 3.43 and its proof read as follows...

Equivalent Statements to Compactness ... Stromberg, Theorem 3.43 ... ... I am reading Karl R. Stromberg's book: "An Introduction to Classical Real Analysis". ... ... I am focused on Chapter 3: Limits and Continuity ... ... I need help in order to fully understand the proof of Theorem 3.43 on...

To write the equation I took as the control volume the following block: and the equation I wrote are: $$ 6m_{f} c_{p_{f}} \frac {dT_{f}}{dt} = 6P - \frac 1 {R_1} (T_f - T_g) \text{ for the fuel}$$ $$ m_{g} c_{p_g} \frac {dT_{g}}{dt} = \frac 1 {R_1} (T_f - T_g) - \frac 1 {R_2} (T_g - T_c)...

One thing I was thinking about doing was to consider these representations as a basis for the gamma matrices vector space, then try to determine what the change of basis from one to the other would be. However I'm unsure if it's correct to treat the representations as a basis, or whether this is...

I think the cluster decomposition states that products of space like separated observable decouple when sandwiched with states. An analogy with statistical mechanics seems to suggest that we are stating there are no phase transitions. For example, in the Ising model all spins are correlated in...

I attempted to solve the problem by following the positive terminal of the battery and I realized that Resistor R1 has a different path than R2+R3+R4. I came to the conclusion that R1 is in parallel with R2+R3+R4. The series connection with R2,R3,R4 would be 30 ohm total by adding the three...

Homework Statement The circuit is the one in "Fig.4" I need to calculate equivalent resistance between A and B. This is what I've tried: I think that the first resistor is shorted by that wire connected between A and E. Their answer looks like this, in fig 2.2.1. I'm not sure if their...

Homework Statement Find the Norton equivalent resistance Homework Equations Sum of resistance in a parallel circuit: 1/Rt = 1/R1 + 1/R2... Sum of resistance a series circuit: Rt= R1+R2... The Attempt at a Solution Don't know where to go from here:

I am working on a research project where I intend to describe what the Penrose process would like in a sonic black hole. I have found what a rotating (Kerr) black hole looks like in the sonic analog: https://arxiv.org/pdf/1802.08306.pdf I have also found that the analog of massless particles...

Hi, for those who don't know, Landau (Lev Davidovitch Landau) had a famous exam called "The theoretical minimum". That exam had to be passed by any future grad-student of his. That test was extremely extensive and difficult, and the student was supposed to be knowledgeable about many fields of...

Hi, This is not exactly a homework problem. This is something I wonder all the time. 1. Homework Statement We all know that the following expressions give different answers, even though the expressions are equivalent. My question is why does that happen. Why two expressions that are the same...

Homework Statement Find the Thevenin equivalent at terminals a-b V1 = 70V V2 (dependent) = 4Vo R1 = 10Kohm R2 = 20Kohm Homework Equations ##V=RI## ##1/req = 1/r1 + 1/r2 + ... +1/rn## The Attempt at a Solution Found the current i = 1mA by KVL using Vo = 10ki then did source...

Hello everyone, my question might seem stupid but I'm still wondering : what is the equivalent in kg of the force exerted on a plate when eating? (can't test this with a scale because I am not at home). Thank you for your kind answers

Homework Statement For the circuit shown below , draw the equivalent NAND gates . Homework Equations - The Attempt at a Solution Could someone check my answer please ?

I have wondered if there is a symmetric current configuration that gives the magnetic field of a half-infinite solenoid. With some thought I think I came up with such a configuration of current loops that produces the same magnetic field as a half-infinite solenoid Suppose we have a large but...

Hello, everbody can somebody help me to find equivalent varicap diode of FV1043, i can't find in ltspice FV1043 is for oscillator to change the frequency….. thanks.

I did this for fun, if you want to do it in an unconventional way, this would be useful in programming. For ##n## resistors in parallel: $$R_{total}=\frac{\prod_{i=0}^{n-1} R_{i}}{\sum_{i=0}^{n-1}(\prod_{j=0}^{n-2} R_{i+j \mod n})}$$

Homework Statement So I need to find the equivalent resistance for the following RC circuit to calculate the time constant, but I got stuck in terms of finding out the equivalent resistance. Homework Equations V = IR The Attempt at a Solution So the thing I am not sure on is how do you...

Hello! I'm trying to simulate a connection between two 2-port devices via waveguide but calculated results do not agree with those, calculated in simulation software. All calculations are in the notebooks. I took a two-port device and compared its S11 characteristic calculated using equivalent...

Homework Statement The problem ask for Thevenin Equivalent for the circuit attached. Homework Equations Vth = Vab Rth = Req Rth = Vth / Isc Rth = 1 / It The Attempt at a Solution Already calculated Vth = 166.67 V. I've no problem with that. Already confirmed by textbook answer. However, my...

Hello! (Wave) I want to show that the following is equivalent: each non-empty and upper bounded subset of real numbers has a least upper bound. each non-empty and lower bounded subset of real numbers has a greatest lower bound. I have thought the following so far: $1. \Rightarrow 2.$...