Table Definition and 894 Threads

I am currently studying Electrical Engineering and I have this question: An energy band is formed by the overlapping of atomic orbitals of atoms coming close to each other.I suspect that if the energy of the atomic orbital of the valence electrons of a chemical element is less than the energy of...

* s t u v s s? v? u v? t t v u u? v v? Since s*u=u does that mean s is the identity element? Then I know there can't be repeated values in a row or column so I need to us that to somehow fill in the rest of the blank spaces?

Hi, I'm struggling to start this exercice, where I have an inclined air hockey table with an angle alpha. They gave me this chronophotography (this is online) saying that the ratio is 1:1 I really don't know how to proceed since this is online and I'm thinking if I measure this with a ruler...

Hello All There is much discussion on the existence of Dark Matter. Should we think of Dark Matter as having macro structure, ie comprising elementary particles, leading to atoms and a Dark Periodic Table? best regards ... Stef

I was reaching for some crackers across the table. My arm tipped over a full opened bottled water that splashed about 1/3 of its contents out of it. Of that 1/3, about 50% got on the table and the other 50% splashed across my laptop's keyboard area. I immediately reached for towels to soak...

Attempted solution: Consider the instant when the normal force of the lower ball is zero. Conserving energy: $$\frac{mv^2}{2}+mgh_1=\frac{mv_1^2}{2}+\frac{mv_2^2}{2} + mgh_2$$ Applying the resulting torque to the upper ball where the rotation point is the lower ball. $$T=I.a =...

I know that arc length is L=rx where x is the central angle in radians. But, that doesn't help me here, because I don't know the central angle, and because I need to use Leonardo's table of chords. I don't understand how the table works.

Hello, The periodic table organizes all known chemical elements (total of 118) based on their atomic number and properties. My understanding is that the first 92 elements are commonly found in nature while the other 26 are either highly radioactive and/or artificially made. Radioactive elements...

If M is displaced by an amount + x from equilibrium.What happens to the two masses at the point of release for displacements of x and less? Will they remain static because mass m provides whatever it takes to stop mass M from moving till some x where m slips and M oscillates or Will they...

Hi I need help I'm lost Assignment: A function given by a logical expression Y = A.B.D + A.not (C) .D + A.not (B) .C.D + A.D write in the truth table.

Over the Thanksgiving holidays, I had a heated argument with my parents in their home (where I reside temporarily too). Out of anger, I physically slammed my arms down on their dinner table extremely hard. I was in a rage (b/c they went out during COVID's surge when we've already lost a family...

I feel this is not correct, from my understanding of data, discrete data will always have a corresponding discrete frequency table and continuous data will always have a corresponding continuous frequency table. The class interval ought to be ##0≤x<5##, ## 5≤x<10##... i need clarity on this...

I have been asked by my team lead to create two tables for a database and to outline the rationale behind my table design choices.Table 1 should contain the following columns and be named vote_share: ● Riding Number ● Riding Name in English ● Riding Name in French ● Total votes ● Turnout (votes...

This question came up in a lecture, and I wasn't really satisfied with how it was solved. Specifically, they assumed that the hanging part of the chain has zero horizontal velocity. What they did was essentially write down the equation ##m\ddot{x} = \frac{mg}{l} x##, which under the above...

Hi all, I am having some troubles deriving the truth table of the following: I don't understand how does one gets to the highlight parts. For example, 10 10, when the carry is low, shouldn't the output be 0 0 1? I fully understand how to add if it is a single bit, but now with 2 bits, it is a...

We know that the net force on the table must be zero $$\sum F_i = F$$ We know that the components of the torque with respect to the origin is also 0. $$\sum \tau_x = 0$$ $$\sum \tau_y = 0$$ $$\sum \tau_z = 0$$ But the problem becomes insufficiently constrained that there are only 4 equations...

For merging columns, I generally use the multicolumn command, while for merging rows, I use the multirow command from the multirow package. The above combination works great if there is no separator in any of the merged columns. If, however, one or more columns have separators, the code breaks...

ok attemped to do this desmos but was sondering if there is away to get these slope in a 3rd column in the table with $m=\dfrac{\delta y}{\delta x}$

Hey everyone, I have generated a nice little velocity vs time graph that I would love if somebody could help me put to use. I have marked data points on the x-axis for the Y-value for every second on the function. Just to be clear: X-axis = time in seconds & Y-axis = velocity in meters/second...

I'm interested in looking at birefringence of crystals with a microscope (just for amusement). I'm definitely not a chemist, and don't intend to become one. Does anyone know of a quick online reference for the solubility of common chemicals in different solutes? Every time I search for this I...

Hello! (Wave) I want to construct a circuit that implements the following truth table:\begin{equation*} \begin{array}{c|c|c|c|c} P(Input) & Q(Input) & K(Output) & A(Output) \\ \hline 1 & 1 & 1 & 0 \\ 1 & 0 & 0 & 1 \\ 0 & 1 & 0 & 1 \\ 0 & 0 & 0 & 0 \end{array} \end{equation*}In...

Wiki said "Arnold Sommerfeld calculated that, for a 1s orbital electron of a hydrogen atom with an orbiting radius of 0.0529 nm, α ≈ 1/137. That is to say, the fine-structure constant shows the electron traveling at nearly 1/137 the speed of light.[9] One can extend this to a larger element with...

I don't understand the problem. Does not block A and B make a system, so they should have the same velocity and acceleration at all time? If not, why do they have different accelerations? I don't understand this part of the problem either: "pull applied to block B equals 12.0 N, then block B has...

Hi all, Having some problems digesting on electric circuits. Below is an example of a question and I would like to ask how do I go ahead in solving this. Firstly, for these types of questions: I have understood how to write a function table, and it goes something like this: Now what I am...

Hello everyone, I'm trying to make a hexapod table, in the same style as this: but I am trying to overcome the main flaw with this design - the minimum height being so high. My goal is to produce something which someone can stand on, in their home. It needs to become as flat as possible, and...

Here is a diagram of the situation. I first marked the forces acting on the system. I understand that for this rod to topple over, there must be a net moment about point ##A##. But how exactly should I approach this problem? Isn't it so, that irrespective of the velocity given to the block...

How to get h3 = 111.37? According to table a-13, sat temp@1.2MPa = 46.29oC, and T3 is lower than that. So the refrigerant should be totally in liquid state, and heat capacity should be used instead. However, from textbook, no heat capacity is given from table. If graph of A14 is used, at 1.2MPa...

We're told that the electron shells give the relative reactivity/affinity to other atoms by their incompleteness, completeness or over-completeness, and arranged in the periodic table accordingly as columns. The shells are are concentrically arranged around the nucleus from smaller capacity to...

ok these always baffle me because f(t) is not known. however if $f'(t)>0$ then that means the slope is aways positive which could be just a line. but could not picture this to work in the tables. Im sure the answer can be found quickly online but I don't learn by copy and paste. d was...

I drew a free body diagram for the books but it's not the same one in the correction. The static force Fs between the books and the table must be opposite to the motion but the correction does not the same and puts that vector in the same direction as the motion. Here's a drawing of the...

If a rod is on a table (horizontally) and rotating about an axis that passes through one of its ends and vertical to the table, what would be the tension on the opposite end of the rod (the end opposite to the axis) . In this post (Check this post out from Socratic QnA), the limits take while...

This isn't hw, just clarification on what I see in the book. I understand how to produce the following table: \begin{array}{|c|c|c|} \hline A & B & A \subseteq B \\ \hline 0 & 0 & 1\\ \hline 0 & 1 & 1\\ \hline 1 & 0 & 0 \\ \hline 1 & 1 & 1 \\ \hline \end{array} What I don't have is an...

4 guests want to be seated on one particular side. So we choose 4 out of 9 seats on that particular side for them i.e 9C4. And they can arrange among themselves in 4! Ways. So 9C4*4! The we choose 3 out of 9 seats on the other side for the three people 9C3 They can arrange themselves in 3...

Hi guys When I ran the Chemical Equilibrium Code from NASA (grc.nasa.gov) to predict the products of a chemical reaction and their concentrations, it says it does not handle certain elements in the database from the periodic table. Is there a computer code that predicts the products of a...

I’ll just paste in all of the packages I’m using and the relevant code. The line in this sample that is giving me errors is line 24. (Errors below) \documentclass[10pt]{article} \pagenumbering{gobble} \usepackage[english]{babel} \usepackage{amsmath} \usepackage{amsfonts} \usepackage{amssymb}...

MCNP (version 6 at least, possibly other versions) produces a summary table. An example is attached. The example shows the neutron portion of the summary table in a combined neutron/photon case. There is an SDEF card that produces photons, and the weights on that SDEF card give the relative...

I have a problem regarding what table is quasigroup. If we have multiplication table and that table is of the sudoku type is that quasigroup? See picture quasigroup.png. Is only (3) quasigroup?

Let T be the tension in the string, a be the acceleration of mass 2m, 2a be the acceleration of mass m T = (m) (2a) ---eq(1) The mass 3m will come down with acceleration a’ = (a+2a)/2 = 3a/2 3mg - 2T = 3m . 3a/2 from equation 1 3mg - 2(2ma) = 3m . 3a/2 thus a = 6/17g thus acceleration of 3m...

Summary: Transform the periodic table of chemical elements (periodic table) into a universal way of storing and transmitting information using spectral analysis. I propose a concept in which the basis for working with information (conservation, transmission in networks) is to use spectral...

So here's what's going on... I've gone and made an attempt at building a height adjustable table. Originally I was going to use stainless steel for the pipe, but after finding out that it would more than quadruple the price, I ended up with SCH40 Aluminum. I used three 48" long, 1" ID pipe...

Let, alpha <- c(1, 1) / 2 mat <- matrix(c(1 / 2, 0, 1 / 2, 1), nrow = 2, ncol = 2) chainSim <- function(alpha, mat, n) { out <- numeric(n) out[1] <- sample(1:2, 1, prob = alpha) for(i in 2:n) out[i] <- sample(1:2, 1, prob = mat[out[i - 1], ])...

I was drawing out the multiplication table in "matrix" form (a 12 by 12 matrix) for a friend trying to pass the GED (yes, sad, I know) and noticed for the first time that the entries on the diagonal are real, i.e. the squares (1, 4, 9, 16, ...), and the off diagonal elements are real and complex...

This is how I started my ICE table: $$CO(g)$$ $$H_2O(g)$$ $$H_2(g)$$ $$CO_2(g)$$ Initial (mol) 0.40 1.00 0 0 Change (mol) -0.40α -1.00α 1.4α 1.4α Equilibrium (mol) 0.40-0.40α 1.00-1.00α 1.4α 1.4α (or should I use 0.225) I am not sure if my table is correct. When I work out the total...

When I place an object in a table, how is the weight distributed in the four legs? Is there an mathematical calculations for that?

Im so confused rn

First of all, disclaimer: This isn't an official assignment or anything, so I'm not even sure if there is a resonably simple solution. Consider the following sketch. (Forgive me if it isn't completely clear, I didn't want to fiddle around for too long with tikz...) Let us assume that we can...

<Moderator's note: Please upload images for otherwise the links might get broken.> Here is the backward difference table given in my book https://prnt.sc/n2965l But it seems this table is wrong. I have marked my comment in the screen. Can you please tell who is right ?

This isn't a homework problem, but I was going to post it in there as my question is similar to one that would be asked there. However there doesn't seem to be a logic section for it so I posted it here. The question is to make a logic table to determine if the following statement is valid...

I am a total physics novice, so please bear with me. I would like to know if it would even be possible to achieve this result. Assume I have a fixed abject like a table. Would it be possible to "redistribute" the weight of the table such that the front end of the table bears more of the...

Greg Bernhardt submitted a new blog post AVX-512 Programming: Extracting Column Subtotals from a Table Continue reading the Original Blog Post.