Column Definition and 317 Threads

A chemist started to carry out column chromatography on a Friday afternoon, got to the point at which the two compounds being separated were about three-fourths of the way down the column, and then returned on Monday to find that the compounds came off the column as a mixture. Speculate on the...

A vertica cylindrical Tank of length greater rgab 76cm has its top end closed by a tightly fitting frictionless piston of negligible weight. The air inside the cylinder is at an absolute pressure of 1 atm. The piston depressed by pouring mercury on it slowly, so that the temperature of air is...

I am reading about how sound waves traveling down a column that is open at one end (clarinet, vocal tract etc). Apparently when they reach the open end some are reflected and interfere constructively or destructivly with subsequent waves in the column. My question is why are the sound waves...

I'm making a distillation apparatus and I've hit a block. The steel wool I packed into the plastic tubing (acting as a fractionating column) is rusting incredibly fast. I obviously don't want to be drinking rust, so can I just take the wool out and use an extra long tube instead? I'm thinking...

There are so many concepts going on in my linear algebra class. Could someone help me understand what they mean? Particularly: vector space, subspace, column space, row space, dimension, basis, and rank. Thanks in advance!

please help! measuring the velocity of sound by an air column hello, I'm new here and in desperate need of help. I conducted an experiment to measure the velocity of sound by an air column. The experiment didn't go very well. It was difficult for me to depict the change of sound. Anyway I...

Purpose : to determine experimentally the relationship between the rate of flow of water through a narrow opening and the height of the water column. any ideas in how i could do this experiment and what kind of data to use etc. and how this can conclude to a design in an hydro electric dam...

There is a maximum height of a uniform vertical column made of any material that can support itself without buckling, and it is independent of the cross sectional area (why?). Calculate this height for a) steel (density 7.8x10^3) b) Granite (density 2.7x10^3) I'm just really confused on how...

Nullspace and Orthogonal Complement Quick question: is the nullspace the orthogonal complement of the column space or the the row space? Thanks, sorry I don't have my textbook nearby.

How would I calculate water pressure in a vertical column? I had about a 17 foot PVC tube with a 4" diameter filled with water. What equations could I use?

There is a maximum height of a uniform vertical column made of any material that can support itself without breaking, and it is independent of the cross-sectional area. (a) Calculate this height for aluminum (density 2.7 103 kg/m3). (b) Calculate this height for granite (density 2.7 103...

There is a maximum height of a uniform vertical column made of any material that can support itself without breaking, and it is independent of the cross-sectional area. (a) Calculate this height for steel (density 7.8 103 kg/m3). (b) Calculate this height for granite (density 2.7...

can anyone help me with this? Let A be in R^mxn, B in R^nxr, and C=AB. Show that: (i) The column space of C is a subspace of the column space of A; (ii) Rank(C) is smaller than or equal to min{rank(A), rank(B)}. For (i) I tried to show that C can be written as linear combination of A but...

Hi. The experiment is set up so that a loudspeaker is suspended oer a column of air. When sound is sent through the air column, the particls of air will vibrate. The amplitude is related to the loudness of the sound so when the particles vibrate at their maximum amplitude (resonance) the sound...

hello guys! i have a column with a shape of a cylinder. the radius is 2cm and the heigh is 5cm. i have to calculate the cross-sectional area of the column. i wonder what is the formula and how is the calculation? it has been a long time since i last had my math lectures, so i really hope for...

The Odd Shapes of Life ( carbon) Hi, I have a question CH3, doublet (one unpaired electron) has a triangular planor shape. According to vspr theory it should have a tiangular pryimidal shape. The rest of the elements in row 14 ( Si, Ge, Sn, Pb) all have a tringular pryimidal shape. From...

I have recently came across design capacity tables for structural steel (hollow sections). - In the table it shows that 273.1 x 12.7 CHS will not buckle at 1 metre of height (below that, size 219.1 x 12.7 at the same height will buckle at 10 kN less than full capacity if it were fully...