Table Definition and 927 Threads

Homework Statement Derive an expression for equilibrium concentrations in terms of formality f (and Keq) for the compounds in the the equilibrium reactions shown bellow. Homework Equations A2 + 2S <---> 2SA SA <---> S + A Where S is a substrate (THF) and A is an adduct (BH3)...

Homework Statement If the coefficient of static friction between an table and a uniform massive rope is [tex]\mu[s] what fraction of the rope can hang over the edge of the table without the rope sliding? b]2. Homework Equations [/b] The Attempt at a Solution Frictional force...

Homework Statement I am trying to integrate: \int e^x\sin(T+x)\,dx where T is independent of x. I have the following formula from a table of integrals: I am a little confused as to how I can use this? The arguments of my functions are not identical so I am not sure how to go...

Wasn't sure of where the most appropriate place would be for this post. If you have a truth table, say for inclusive OR, then you get a sums-of-products expression: (A * B^c) + (A^c * B) + (A * B) From this, how could I arrive at the following: A + B = ((A + B)^c)^c = (A^c * B^c)^c...

Hello, does anyone have an idea how easily to display a matrix of numbers such that each entry, for example 3, is displayed (3%), without having to type it manually, i.e. a command to do it for each entry in my output matrix? Thanks a lot!

Can anyone tell me where I can find a basic T parameter table for RF design. One with the T parameters for shunt impedence in coaxial, series capacitance in coaxial, coaxial of length l etc...

Hi - I'm designing a dining table, and am trying to calculate how much weight could be applied at the edge of the table (if someone were to lean or sit on it) before it would tip. If the legs are set in about one quarter of the total width of the top, can the outer edge of the table carry a...

Homework Statement Each team has played once against every other team in a tournament. The results were collected in the partly incomplete table below. (see attachments) Homework Equations a) Find the number of draws and the number of losses for team D. b) What was the result of the match...

Using Excel 2003, I'd like to display text data in the Data Items area of a pivot table. Currently, I see the number 1 in the field. I've changed the format to "Text", which has no effect on the data that's displayed. Is it possible to display text data in the Data Item area of a pivot table...

Homework Statement A uniform chain of total mass m is laid out straight on a frictionless table and held stationary so that one-quarter of its length, L = 2.87 m, is hanging vertically over the edge of the table. The chain is then released. Determine the speed of the chain at the instant when...

Homework Statement A 10.4 kg block sits on a frictionless horizontal table. The block is attached to a horizontal ideal string that goes over an ideal pulley and is connected to another identical 10.4 kg block that hangs freely. What is the acceleration of the block on the table? State the...

Mathematicians are creating their own version of the periodic table that will provide a vast directory of all the possible shapes in the universe across three, four and five dimensions, linking shapes together in the same way as the periodic table links groups of chemical elements. The...

Hello, Is there any way of getting the percentage value of In and Ga in question marks, using equations. I've been working this for few hours and really have no idea. [PLAIN]http://indiansketches.com/img.png Thanks in advance

Multiplication Table -- nested for loop Homework Statement Use nested loops to print a M by N multiplication table as following. Allow the user to enter the size of the table (M by N). 1 2 3 4 5 6 ... M 1 1 2 3 4 5 6 ... M 2 2...

Homework Statement A very small steel marble is shown rolling at a constant speed on a horizontal table. The marble leaves the table at M, falls, and hits the ground at P. This is illustrated in the diagram below which is drawn to scale. Calculate the time it took the marble to travel from L...

Homework Statement A perfectly flexible cable has length l. Initially, the cable is at rest, with a length of it hanging vertically over the edge of a table. Neglecting friction, consider the cable's motion as it slips off the edge of the table. (a) Show that the length hanging over the edge...

Homework Statement A doctor's prescription calls for a daily intake of liquid containing 40mg of vitamin c and 30mg of vitamin d. There are three liquids that can be used: one contains 20%vitamin c and 30% vitamin d; the second, 40% vitamin c and 20% vitamin d; the third, 30% vitamin c and 50%...

Is it possible to turn my 20 square foot welding table into an elctromagnet? I weld steel cut nails into artwork. The nails lay flat on the steel table, but the welding process sometimes "shifts" the nail out of position during the spot weld. This error causes the process to be shut down, and...

Homework Statement a 40kg duck walks from the outside to the inside of a rotating circular table of mass 100kg. if the rotational intertia of the table is 250kg*m^2 and the duck moves from a radius of 2.5m to 1.5m, find the final angular speed of the table if it rotates at 2.0rad/sec at the...

Homework Statement I am given the binary equivalent of ASCII codes and I am asked to decode a particular binary message (ASCII binary to actual ASCII character). I am required to write it in C. Where can I get a text file of the ASCII code so I may create a look up table? I googled...

why aren't the lanthanide and actinide series included in the periodic table? is there some non periodicity in there elements?

How did Dimitri Mendeleev know that some of the elements were missing/not discovered? How did he know that the missing elements existed? Did he find some sort of pattern when he created the Periodic Table?

A uniform solid cylinder is set spinning about its axis and is then gently placed, with the axis horizontal, on a rough horizontal table. What fraction of its initial kinetic energy is dissipated in sliding friction before the cylinder eventually rolls smoothly along the plane? The only...

The argument is: ~(A^B) / (~A^~B) -> (C^D) / D->C // C I've attached the truth values that I've filled in. I have difficulty in determining the truth values of A and B since I can't get any clue from other statements. Any advice would be appreciated.

I have a variable called 'Node' which has a 1x5 structure and each of the 5 cells is made up of other variables. I now have a 1x5 matrix as a completely separate variable. I am trying to merge the two together, so that in cell 1 of the Node variable, i have the 1x1 value of the matrix, in cell...

Does anyone know where to find a list or table of galaxies and their masses? I haven't been able to find one yet. One with their redshifts would be nice as well. Thank you very much.

Homework Statement There is a stick of length l moving at velocity v to the right on a table of height h. Calculate the time and angle at which it loses contact with the table from the point where exactly half of the stick is off the table. Homework Equations F=ma x=wt+1/2at^2...

Hi guys, i was just wondering if there is some book or whatever that has a list of loop integrals. More specifically, I am looking for one-loop integrals in the lightcone gauge with an arbitrary number of propagators. I found a paper by Leibbrandt which tells me how to calculate them, but I...

I want to make a Table[] but aI don't want this function to evaluate its argument each time. for example, I want to make the table {12,22,32,42,...}, instead of {1,4,9,16,...} how?

Homework Statement If rolling mill is running at 10 meters per second and roller table after mill is running at 20 meters per second. Before cutting of bar, it will move at 10 meters per second. Before cutting, roller table is trying to pull the bar, but since bar is not cut, it will...

If rolling mill is running at 10 meters per second and roller table is running at 20 meters per second. Before cutting of bar, it will move at 10 meters per second. After cutting bar has to move with the speed of 20 meters per second on roller table. How much time bar will take to reach to...

Hello I have an assignment to do about the force table. I'm not sure about my answers, hope someone could check it for me if I answered correctly. 1.What kind of forces do you use on the force table? Explain about the used forces. Resultant force, Equilibrant and Weight. -Resultant...

Hi all, I have a 2nd order ODE I am trying to solve using NDSolve. In the ODE there are two constant coefficients and an initial condition that I want to 'vary'; meaning, I have a table of initial conditions with corresponding constant coefficients. It is straight forward to solve the ODE...

As per title. Values from 0 to 20 degrees Celsius are easy to find but I've yet to find one that goes below 0 and up to 80.

Homework Statement An object of m=0.85kg is on a table. It is attached via pulley to a hanging object of m=0.42kg. The pulley is a hollow cylinder of mass 0.35 kg, with an inner radius of 0.02m and an outer radius of 0.03m, and it turns without friction. The coefficient of friction between...

Homework Statement First off, this isn't really a homework problem but something I needed clarification on. For background information, I am currently working on a research project as an assistant in an academic setting. What we are evaluating is strengths of various materials when subjugated...

Homework Statement Block A has a mass of 4.90 kg and rests on a smooth table. It is connected to Block B which has a mass of 3.50 kg. Block B is released from rest. How long does it take Block B to travel 0.840 m? Description of figure; Mass A is on the frictionless table. Mass B is...

My friend and I are doing table top fusion for our science fair. We can not figure out a sutable replacement for lithum crystals either than magnets. We need independat varibles, because our teacher says that just 2 magnets is not good enough. Also, it has to be cheap and can be handled by 13...

Homework Statement A woman with a mass of 70 Kg stands at the rim of a horizontal table having a moment of inertia of 490 kg*m^2 and a radius of 1.4 m. The turntable is initially at rest and is free to rotate about a frictionless, vertical axis through it's center. The woman then starts...

Homework Statement I don't know how to fill in the following k-maps [PLAIN]http://img502.imageshack.us/img502/7339/dsc00767mn.jpg Homework Equations The Attempt at a Solution The onyl way I know how to fill in a k-map from a table like that is to go down the present state and...

Homework Statement prove that: not A implies B if and only if not B implies A Homework Equations construct truth table The Attempt at a Solution the answer is given as a table (T means true, F means false): A| B| not A implies B| not B implies A| IFF T...

Homework Statement In his paper "regression towards mediocrity in hereditary stature" Francis Galton collects data on stature of children (928 obs.) & parents (205 obs.) now as part of my project i have been asked to recreate the original data set. However taking children the data set runs...

Homework Statement I have to design a table which oscillates automatically. I have designed the structure and mechanism to do this. However I cannot begin to construct this design until I do some calculations for dimensions. I have no idea where to begin, thus why I am asking this question...

I really struggle to integrate this fraction expression: \int \frac{2}{4x^2+1}

Homework Statement an object of .4kg is attached to a spring with given spring constant 400 N/m. it is moving on a tilted table, that is at 30 deg from teh horizontal. The table is frictionless, but there is a dampening force -bv proportional to velocity. when the object is driven, the...

So I've been handed an assignment, to design the mechanism and structure to oscillate a sanding table left and right. I thought about strapping a pneumatic mechanism underneath, a rod would connect to clamps which are attached to the board. My question is, would a pneumatic mechanism be a bit...

aka "How to Rearrange the Elements Without Engaging in Alchemy" Below is one view on what the Periodic Table might look like if it were "callibrated" in geometric fashion to the Atomic Numbers of the Earth Alkaline Metals. (red cells) 4, 20, 56 and 120 are all 4 times the sum of squares (1 + 4...

Hey, When we play Poker online, we are using a centralised network. You deposit your cash online, sit down at a game and play. You place your trust in the site to be secure; no other players can see your hands and no money is being secretly stolen from you. Even big name sites have been known...

Homework Statement I have to figure out how to solve this integral without a table : int((2r/sqrt(r^2-s^2))*(1/2)*(R-r)^2),x,s,R) where R and s are constant parameters in the function. Homework Equations The Attempt at a Solution So far i have tried breaking the function up and...

1. You push a 100g object across a table and release it 2 m from the edge. The object slides across, sails off the edge falls 1m to the floor and lands 30 cm from the edge of the table. If the coefficient of friction is 0.5 what was the object's speed as you released it? 2. f=ma...