Science & Mathematics - 21 December 2006

I don't have much research experience, and I need to design an experiment to figure out if promoter differences in different strains of a certain bacterium affect the way a repressor protein is able to bind to the promoter. Any thoughts?

2006-12-21 04:05:00 · 3 answers · asked by nn p 2 in Biology

2006-12-21 04:04:28 · 15 answers · asked by rmfurther3000 1 in Mathematics

2006-12-21 04:03:10 · 20 answers · asked by Anonymous in Astronomy & Space

2006-12-21 04:02:38 · 25 answers · asked by crewcut 1 in Biology

E.g. A machine which can see into the future rings a bell 20 seconds before you clap yor hands.

Is it possible to hear the bell ring and then not clap your hands (i.e. you were prepared to clap your hands but once you heared the bell you changed your mind) , or will the bell never ring, because it can see into the future that you are not prepared to clap your hands?

2006-12-21 04:01:17 · 23 answers · asked by JOHN Y 2 in Physics

so, i met this guy. he told me he's an engineer (mostly buidling corporations) AND an architect also. says he has 2 BA's. is that possible to both? also what do u think his salary is like :)

P.S. he's 26 yrs. old.

2006-12-21 03:59:51 · 12 answers · asked by Anonymous in Engineering

You wonder if it is male or female, and the geneticist says it is obvious from the color which sex the calf is.She explains that in Ayrshires the genotype AA is mahogany and aa is red, but the genotype Aa is mahogany in amles and red in females. What she is trying to tell you-that is, what sex is the calf? What are the possible genotypes of the calf's father?

2006-12-21 03:58:30 · 1 answers · asked by iqbalkhanayesha 2 in Biology

Darcy's Law
The length between the two manometers is .25m The inside diameter of the pipe is 2m. The top manometer is reading 50 inches of water. The bottom manometer is reading 025 inches of water. The outlet is producing 1 m3 of water over 5 min. The test temperature is 70 degrees Fahrenheit. Sand pack measures 30 inches in height. What is the permeability of the sand pack?

2006-12-21 03:57:50 · 2 answers · asked by jase 1 in Earth Sciences & Geology

we are facing problems like landsliding, mud forming while excavation, ground water seapage, and continious flow of water. We are also not able to stop water also from existing drainage line. last three months we are doing this job, but not able to lay single pipe. We had also used chain mounted machinery like hitachi 200 also but no result ! as and when we lift earth, more earth is sliding from sides forming mud and we are not able to perform replacing pipe. Please give me information regarding how to prevent landslide and how to lay 18" RCC Hume pipes in mud ? Is there any construction chemicals available to prevent ground water seapage ?

2006-12-21 03:56:14 · 4 answers · asked by hertzvadodara 2 in Engineering

When was the last time man landed?
Also give the names of the missions and the men...since then why haven't we sent anyone?

2006-12-21 03:54:08 · 11 answers · asked by Parth 1 in Astronomy & Space

we are facing problems like landsliding, mud forming while excavation, ground water seapage, and continious flow of water. We are also not able to stop water also from existing drainage line. last three months we are doing this job, but not able to lay single pipe. We had also used chain mounted machinery like hitachi 200 also but no result ! as and when we lift earth, more earth is sliding from sides forming mud and we are not able to perform replacing pipe. Please give me information regarding how to prevent landslide and how to lay 18" RCC Hume pipes in mud ? Is there any construction chemicals available to prevent ground water seapage ?

2006-12-21 03:53:48 · 3 answers · asked by hertzvadodara 2 in Earth Sciences & Geology

1. Solve for x: (3/5)(10x – 4) + 1/5 = 49

2. Solve for d: (5/3)d + 2 = p

3.Solve for a: | a – 7 | = 4

4.Solve for x:
| x -2|
| 6 2x| = 10x

5.Use Cramer’s rule to solve:
x - 9y = 2
3x + 4y = 7

6.Solve: (1/y) - (2/3) = (1/4)

2006-12-21 03:53:15 · 7 answers · asked by wil46yang 2 in Mathematics

2006-12-21 03:52:19 · 4 answers · asked by jlm819 1 in Zoology

2006-12-21 03:51:54 · 4 answers · asked by Anonymous in Astronomy & Space

there is no snow in michigan

2006-12-21 03:49:50 · 19 answers · asked by 123456 4 in Weather

Example- plain mirror show virtual image, but we can see our selves

2006-12-21 03:47:33 · 2 answers · asked by Rohit s 1 in Physics

very tight budget as cheap as i gets
big enough for a person to sit in
just give me the basics

2006-12-21 03:46:17 · 3 answers · asked by Anonymous in Engineering

1.Find the slope of the line through (-3, -2) and (-5, 3)

2.Find the slope and y-intercept: 3x + y = 2

3. Write in slope intercept form: 4x + 6y = 5

4.Solve the system:
x + y + z = 4
x - y + z = -2
2x + y - z = 2

5. Simplify:

(14x – 7) / (2x – 1)

6.Simplify:

(x2 - 8x + 16) / (x2 – 16)

2006-12-21 03:45:40 · 13 answers · asked by wil46yang 2 in Mathematics

2006-12-21 03:44:33 · 3 answers · asked by SouthOckendon 5 in Geography

"The lower leg of the Fairbanks Creek mammoth was 15,380 RCY ago while the skin and flesh were 21,300 RCY."
(Natural History, September 1949, p.300

2006-12-21 03:39:38 · 5 answers · asked by truth seeker 1 in Biology

2006-12-21 03:35:36 · 13 answers · asked by forest lover 2 in Earth Sciences & Geology

Complete defination please

2006-12-21 03:35:03 · 4 answers · asked by Anonymous in Physics

2006-12-21 03:34:43 · 15 answers · asked by Anonymous in Other - Science

2006-12-21 03:34:02 · 2 answers · asked by bh 2 in Engineering

cant go anywhere,dont have to work. :P

theirs 10 feet of snow piling up outside.

ideas??

2006-12-21 03:31:58 · 12 answers · asked by forest lover 2 in Weather

All the planets are held in place by gravity...
how can then..........?

2006-12-21 03:31:32 · 8 answers · asked by Parth 1 in Astronomy & Space

2006-12-21 03:31:28 · 14 answers · asked by ♫ Saaskie ♫ 1 in Mathematics

2006-12-21 03:27:32 · 2 answers · asked by Mr. Kite 2 in Zoology

2006-12-21 03:26:58 · 11 answers · asked by Anonymous in Physics

short, rounded, brown; grows in clusters; exudes bluish foul smelling dust when stepped on. found in shredded wood mulch in playyard of preschool. is there possibility of harm to small children?

2006-12-21 03:25:52 · 4 answers · asked by Treva P 1 in Botany