Science & Mathematics - 7 August 2007

explain why if given the amino acid sequence of a protein, you are not able to give the exact nucleic acid sequence of the gene from which it came from?

2007-08-07 05:13:35 · 5 answers · asked by ashesanne 2 in Biology

2007-08-07 05:12:54 · 10 answers · asked by john b 1 in Zoology

1. A segment is the shortest path between two points.
2. Perpendicular lines intersect at one point.
3. Perpendicular lines form four right angles.
4. A line has infinite length.

2007-08-07 05:12:41 · 3 answers · asked by Anonymous in Mathematics

2007-08-07 05:12:15 · 3 answers · asked by Jim W 1 in Weather

2007-08-07 05:10:45 · 7 answers · asked by Anonymous in Physics

what does PCR stand for? what does this technique allow you to do to genes?

2007-08-07 05:10:32 · 5 answers · asked by ashesanne 2 in Biology

i got compressor ,secator ,an cooling tower system stopped, i want to run this system ,so what i have to do next

2007-08-07 05:09:28 · 1 answers · asked by chemeco 1 in Engineering

How do I move the slove for R?

2007-08-07 05:08:31 · 2 answers · asked by daniel 2 in Mathematics

2007-08-07 05:05:43 · 14 answers · asked by Bobbie Raymaker 1 in Weather

Thank you!

I just dont get it my teacher is horrible!

these are the qustiones i need to do and there so hard. He didnt even explain hot to do them just gave us a wk sheet and boook work =(

can someone plz help me and describe how to solve these?

Solve eacg equation for x, then solve each equation for y.

3x-5y=12


use substituaion to solve each sytem of equationes. If the system doe snot have exaclty one solution, state wheter it has no solution or infinite solutions.

1.2x+7y=3
x=1-4y


2. 2x+3y=1
-3x+y=15


3. x=1/2y+3
2x-y=6

4. y=3/5x
3x-5y=15



thx so much!

2007-08-07 05:05:32 · 5 answers · asked by javier c 3 in Mathematics

Please help!!
Write an equivalent expresion by simplifying:
10(x-2)
_______
24(x-2)
Thank you, and please explain to me how you got your answer!

2007-08-07 05:05:11 · 3 answers · asked by lodiva1bw 3 in Mathematics

And I wanted to know what I should practice right now so I can get used to it. I've heard of a Uni circle , but do I study that, how?
Thankyou!

2007-08-07 04:59:08 · 2 answers · asked by Anonymous in Mathematics

if inside cylindrical material magnetic induction=bR^a where b,a are constant and R is radial distance from axis of cylinder then find current density ie J (current/area) as function of R

2007-08-07 04:57:06 · 4 answers · asked by miinii 3 in Physics

i need a solution for this type of question.can anyone tell me the working steps or the description of the problem.

2007-08-07 04:54:42 · 11 answers · asked by lavender 1 in Mathematics

Have to simplify this mathproblem and I'm getting nowwhere!!

13x^3 - (-2x^2 + 3x)(-2x+3x^2)

I know it's should be simple but I'm still stuck!

2007-08-07 04:54:01 · 3 answers · asked by Bluewolf 1 in Mathematics

This is something that just occured to me recently but since the Earth is at just the right distance from the sun (93 million miles) and had the right conditions for life developing (being neither too hot or cold like the other planets) why couldn't the same have happened on the Moon?

The Moon is approximately 240,000 miles from the Earth. That little closer distance to the Sun couldn't have made that much of a difference. There must be some other reason as to why an atmosphere and other conditions needing life to evolve did not occur on the Moon.

2007-08-07 04:47:50 · 15 answers · asked by Ellesmere 3 in Astronomy & Space

2007-08-07 04:45:46 · 3 answers · asked by Anonymous in Engineering

2007-08-07 04:44:33 · 11 answers · asked by Edson M 1 in Mathematics

y=mx+b

Driving down a mountain, Tom finds that he has descended 1800 ft in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth.

I would like how to do the equation and the answer. Please, I'm lost with this.

2007-08-07 04:44:09 · 6 answers · asked by Anonymous in Mathematics

or is everywhere or nowhere the centre?

2007-08-07 04:44:04 · 10 answers · asked by Anonymous in Astronomy & Space

2007-08-07 04:42:37 · 11 answers · asked by ariana 1 in Astronomy & Space

i just always wondered if it is still there

2007-08-07 04:41:38 · 15 answers · asked by Me 6 in Astronomy & Space

...and if so, and we stretched them end-to-end, is there any way to define how long the string of them would be?

Just a bit of numeric, theoretical-physics-based whimsy. :-)

2007-08-07 04:40:37 · 2 answers · asked by uncleclover 5 in Astronomy & Space

Hi everyone,
Since a long time the question 'What is light' is questioning me...

We all seem to know what it is. It's something that lets us see and something that warms us up... But when I ask for a definition noone can answer me...

You cannot grab light, nor really 'see' it.
Can someone help me with my everlasting question...

2007-08-07 04:38:02 · 10 answers · asked by Anonymous in Astronomy & Space

2007-08-07 04:35:49 · 13 answers · asked by Anonymous in Astronomy & Space

2007-08-07 04:35:49 · 19 answers · asked by Anonymous in Chemistry

2007-08-07 04:33:00 · 12 answers · asked by Jane 3 in Zoology

2007-08-07 04:28:05 · 5 answers · asked by Anonymous in Zoology

If I know what RPM a viking internal gear pump needs to run at, how do I determine what the Hz is for the Allen Bradley Powerflex 40 drive that is running it?

2007-08-07 04:26:13 · 2 answers · asked by playingwilbur 1 in Engineering

2007-08-07 04:25:56 · 2 answers · asked by girrafe_87 1 in Engineering