Configuration Definition and 268 Threads

Homework Statement Initially switch is at A, and C1 is fully charged (batter=12volts). C2,C3 are initially uncharged. Then switch is moved to B and the charge is redistributed. What is the voltage across C1? [Answer: 8.00volts] What is the voltage across C3? [Answer: 2.67volts]...

Homework Statement Consider a simply supported beam with a block of mass m placed at the midspan and a spring with spring rate k placed between the beam and the ground at the midspan. Find the spring rate required to reduce the static deflection to one half its original value before the...

Homework Statement (2S,3S)-2-chloro-3-methylpentane + high concentration of CH3O- ---> ? The Attempt at a Solution I need to find the product and usually my method is to knock off the -Cl replacing it by -OCH3 and when drawing the compound I just make an mirror image. In...

I have already turned in my homework for chemistry however I'm still confused about this question: Which electron configuration is in an excited state? a.1s2 2s2 2px2 b.1s2 2s1 2px1 2py1 2pz1 My teacher told me that the only choice b was excited because choice a was in violation of Hund's...

Hello, I need some ideas on this problem, but there's a bit of an explanation before I get to the actual problem. Say you have C couples to be arranged over N tables. Rules for arrangement are as follows: 1) Couples may not be seated in the same table (i.e. the husband and wife must be...

. Homework Statement Diagram: Please check the attachment. It has a diagram that will help solve the problem #6)Point charges Q1 and Q2 are located at two vertices of an equilateral triangle. Point P is the third vertex.The length of each side of the triangle is 28.0 cm. Q1 = +26e, and Q2...

When we try to predict electronic configurations by the building up principle we add electrons to the d-orbitals before the p-orbitals for principal quantum numbers n ≥ 4. What I don't understand is why, according to my textbook, we're supposed to remove electrons from np-orbitals first, then...

"closed electron configuration" equivalent to "closed shell" Hi, is the term "closed electron configuration" equivalent to "closed shell"? derivator

Hi all, What is the configuration of the op amp in the attached file? The resistors is confusing me. Can someone enlighten me? Thanks alot!

I got this problem today in my International Chemistry Olympiad Paper, quite bugging me this question, so I am better off asking it. My question is, which of the following has R configuration? From what I tried, I got both of them as S, and the remaining two options being confirmed...

Homework Statement Develop the pump head curve. Homework Equations The Attempt at a Solution Top branch: ## \Delta h=2(a-b(\frac{Q}{2})^2) ## Bot branch: ## \Delta h=a-b(\frac{Q}{2})^2 ## Combining them is where I'm having trouble; I don't understand what to do with the a term. Add...

i am beginner in transistors i can't understand common emitter configuration for saturation mode ,i am new in electronics and need help

Homework Statement Question: A box contains 1 mole of a gas. Consider two configuration : a) each half of the box contains half the molecules and b) each third of the box contains one-third of the molecules. Which configuration has more microstate?Homework Equations The only equations to be...

I am trying to draw electron configurations for multivalent electrons for Pb4+ and Pb2+. The work I have: (Xe)6s24f145d10 (PB2+) (Xe)6s04f145d10 (PB4+) the problem I'm having with multivalent structures is: I have no idea which electrons to remove when there is an ionic charge For...

This is the electron configuration for Ag (Silver) found on the wikipedia page: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s1 I used the Aufbau Principle and got this instead: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d9 1. I can see that Ag is an exception to the rule, but are there any...

in common emitter configuration of BJT , why do we have linear relationship between output current (collector current ) & output voltage ( collector emitter voltage) ? Has it anything to do with early effect ? If yes then why don't we have linear relationship in case of common base configuration ?

Homework Statement If you calculate W, the amount of work it took to assemble this charge configuration if the point charges were initially infinitely far apart, you will find that the contribution for each charge is proportional to kq^2/L. In the space provided, enter the numeric value that...

I'm trying to set up several web applications on a server. There is a current application running https that I can't touch. I have two other web applications that I set up. I have them running on port 80 and 85. Port 80 is a glassfish server and port 85 is being handled by Microsoft IIS...

I am trying to self-learn quantum mechanics pertaining to Lanthanide ions. For a given set of J and MJ quantum numbers in a valence 4f^2 electronic configuration, J=0,2,4,6 and MJ=0,6,-6. The |J,MJ> basis functions are |0,0>, |2,0>, |4,0>, 1/2[|6,6>+|6,-6>]+sqrt(1/2)|6,0>, and...

is it possible to construct a system with only finite number of point charges of arbitrary magnitude at finite distance from each other such that the total potential energy is zero everywhere? i doubt earnshaw's theorem would prohibit this construction, hence is it possible? thanks

Hello. I'm having a problem understanding the 3d orbitals when I'm doing electron configurations. When you fill up electrons for let's say nickel, Ni, you get the configuration: [Ar]3d8 4s2, if I'm not mistaken. But what I have read, at least I think I have, the 3d orbital gets really...

Desargues' theorem: Two triangles are in perspective axially if and only if they are in perspective centrally. I was wondering if this particular configuration was correct: http://garciacapitan.99on.com/bella/imgs/desarg2.gif http://garciacapitan.99on.com/bella/imgs/desarg2.gif (copy-paste...

Homework Statement Write the ground state electron configuration of Mn2+. Homework Equations N/A The Attempt at a Solution Well I thought that since it had the 2+ superscript and manganese is a metal, it must have lost two electrons. Manganese has an atomic number of 25 and...

Hi Say I have to coils in the anti-Helmholtz configuration as in the attached picture. It is pretty easy to find the field along the z-direction, as this is introduced in introductory EM. However say that I would like to know the field along the x-direction. This I don't know how to find...

suppose a magnet and a coil are made to rotate in the opposite direction relative to each other, will this result in a higher voltage at a rpm as against the stationary coil and moving magnet configuration at the same rpm ? i've also attached a figure to illustrate the configuration...

Homework Statement Why is the electron configuration of neutral Platinum: Pt = [Xe]4f ^{14} 5d ^{9} 6s ^{1} and not?: Pt = [Xe]4f ^{14} 5d ^{10} 6s ^{0} I thought that if the two electrons from the 6s sub-shell were to move to the 5d sub-shell, then 5d sub-shell would be fully...

Suppose we have a system with scleronomic constraints. Is the condition that ∂V/∂qj=0 for generalized coordinates qj a necessary condition for equilibrium? A sufficient condition? I managed to "prove" that the above condition is necessary and sufficient for any type of holonomic constaint...

Homework Statement What is the electron configuration for Ti+2? The answer to this question, from my homework, is [Ar]3d2, but I am not able to figure out why. 2. The attempt at a solution I originally thought the configuration was: Ti+2 = [Ar]4s2 and not: Ti+2 = [Ar]3d2 My reasoning was...

The Order of priority of few elements is given Below OCOCH3 > NH2 > COOCH3 > COOH > COCH3 > C6H6 Can anyone explain me how these priority were assigned. If we consider C6H6 ...out of the 6 Carbon Atoms which one should i choose ... and if i choose anyone of the Six then i should add...

Homework Statement Suppose we have a system with scleronomic constraints. Is the condition that \frac{\partial V}{\partial q_j}=0 for generalized coordinates qj a necessary condition for equilibrium? A sufficient condition? Homework Equations -\frac{\partial V}{\partial q_j}=Q_j= \sum_i...

I am building a Peltier Cooler with the circuit diagram below. The power supply will be a battery, but for testing purposes I am connecting it to a stationary power supply. http://dl.dropbox.com/u/10419947/circuit.png I suspect that the peltier coolers which are rated at 30A will draw as...

Hello, This is my first time using this forum, I just have a quick question that I'm trying not to get too held up on by re-reading (skimming) the chapter several times. Anyways: Homework Statement "Consider the case of 10 oscillators and eight quanta of energy. Determine the dominant...

Hi I am little confused by star resistors configuration. The problem is asking for equivalent resistor for the circuit. I have attached the image below (Image is little sloppy because I can't draw with a mouse :D). My logic is as follows: First I calculated R1 and R2 as parallel...

[b]1. Homework Statement [/b Some elements having exceptional electronic configuration have 2 shells having e not completely filled. Like Rh has configuration 4s2 4p6 4d8 5s2 now when we study how atoms combine we consider only the outermost shell because it is the only one not filled...

Homework Statement Electron Configuration of Uranium The Attempt at a Solution [Rn]7s^2 5f^4 But online it says [Rn] 5f^3 6d^1 7s^2 Someone explain why please. Thank you. :)

Homework Statement I need to find the rotational kinetic energy of this system in the figure I have provided. Here the spring is rotating with the system at angular speed \omega. The two beads on the wire move vertically, and the third bead is held by two massless rods of equal length L...

Homework Statement The lowest excited states of the Be atom correspond to a 2s2p configuration of optically active electrons. What 2s+1Lj components originate in this configuration? Assume that Hund's rules hold for the multiplet and deduce the ordering of the energy levels. Refer to a table...

Why is it that atoms must have 8 valence electrons in order to be stable? Aren't electrons most stable when the orbital is completely filled? Helium's electron configuration is 1s^2, Neon's is 1s^2 2s^2 2p^6, etc. All the noble gases, except for helium, have the p orbital filled. I'm...

i may need your help for following question. 15kva, 2300/230v, 50Hz transformer has voltage drop of 2% and 4% of load voltage, due to winding resistance and leakage reactance respectively, at full load. 230v is maintained at the secondary terminal. The full load copper loss is equal to the...

Homework Statement You have two concentric cylinders. The inner cylinder has radius a and the external cylinder has radius b. Find the electric potential in the region between the cylinders. [Hint: The final equation takes the form V(r) = constant1 - constant2 ln(something) ]...

Hey everyone, thanks for taking a look at this. I was hoping you could look over this to make sure I solved this correctly. Thanks for you time. Homework Statement ---- "+" ---- "+" ---- "-" ---- Given this configuration of charges where the plus and minus indicate the magnitude of...

Homework Statement Why do transition metals tend to form +1/+2 ions? Take electron configurations into account so that I can better understand this "easy" concept.2. The attempt at a solution I think it has to do with the s orbitals. These, I think are valence electrons that are easily lost...

Now as you can see in the picture a common base configuration of BJT. The green markings in the picture are resistances. :p My question is: By KVL : VBB = VBE + IE*RB which means that IE is esentially a constant because VBB , VBE, RB are constants. Now If Voltage Vcb is increased Early...

Hello I am looking to learn about Lattice Gauge Theory. I am already understand the general theory, (that is, defining fermions and gauge fields on lattice sites and links, respectively), but am having trouble intuiting the results of such calculations. As an example, the following is a...

Homework Statement Write all possible terms (n1 j1, n2 j2, …) J for these electronic configurations (considering jj coupling scheme): 1s2 1s2s 1s22s22p 1s22s22p5 The Attempt at a Solution 1s2 I have two electrons in the s sub-shell, since |l-s|<=j<=l+s then j1=1/2 and j2=1/2...

Homework Statement Find all permitted J values for electronic configuration 2p3/22 Homework Equations Clebsch-Gordan coefficients maybe ? The Attempt at a Solution Maybe from this ? J = L+S,L+S-1,...,|L-S| Then I first have to find L and S, and just put them in above equation...

Someone suggested to me that this stuff may be more appropriate in the QM section (I’m not sure?). I think others on here have brought this up before but I thought I’d post some stuff I’ve come across that may be useful to some as a kind of an introductory reading on the ontology of...

Previously I had been asked the configuration for Fe+ as an ordinary question from Periodic Table. I know Fe2+ and Fe3+ but I have no idea for Fe+ I know the configuration of Fe : [Ar]4s23d6 So I accordingly wrote Fe+ as [Ar]4s13d6 But they say that Fe+ is [Ar]4s03d7 I just want...

Hi, I'm a bit confused wit the concept Configuration Space. First, the professor defined generalised coordinates as such: U got a system of n particles, each particle has 3 coordinates(x,y,z), so u got 3n degrees of freedom. If the system has k holonomic constraints, u got 3n-k degrees...

Homework Statement Write the electron configuration for SiO4. Homework Equations The Attempt at a Solution My professor said we just need to show the configuration for Si and O separately. I think Si gains four electrons, so its configuration is 1s2 2s2 2p6 3s2 3p6 But...