Science & Mathematics - 11 July 2007

2007-07-11 07:35:09 · 16 answers · asked by Alexander 6 in Astronomy & Space

7x + 12 = -16


1.2x = 2.3x - 2.2


4x + 21 = 7 (x +9)


| x - 4 | = 15


| 5x + 11 | = 9


| 13 + 2x | = 5

2007-07-11 07:34:57 · 11 answers · asked by jwise666 1 in Mathematics

A Space Craft travelling a light speed (yes its impossible but just imagine it) turns on its headlamps, what happens???

2007-07-11 07:34:25 · 17 answers · asked by Stephen L 1 in Astronomy & Space

express the equation of the circle in standard form. State center and radius

a.) x^2 = y^2 - 6x +10y +9 = 0

need help with this one broken down please =)

2007-07-11 07:34:02 · 2 answers · asked by GradyK 1 in Mathematics

2007-07-11 07:32:40 · 17 answers · asked by Anonymous in Astronomy & Space

2007-07-11 07:32:19 · 10 answers · asked by MrPlankton 2 in Astronomy & Space

What inventions came about due to the space race/space exploration?

Please list as many as you can!

2007-07-11 07:32:18 · 8 answers · asked by risc19 2 in Other - Science

I understand that gravity keeps them in line, but what has determined how close they are to the sun? Is it the weight of the planets? Are the heaviest closest?

2007-07-11 07:29:24 · 9 answers · asked by Anonymous 3 in Astronomy & Space

Hi...I'm helping an author write a book. He needs some specific examples of recent medical breakthroughs (say in the last 10 years or so), new drugs, or innovations made possible by the increased processing speed of computers and/or the ability to communicate quickly over long distances. Suggestions can be in any aspect of medicine, but we are especially interested in cancer, heart disease, diabetes, or obesity.

The more specific details or links you can provide the better, since we will have to source our references in the book.

Thanks to everyone who contributes.

2007-07-11 07:27:44 · 4 answers · asked by kathy_is_a_nurse 7 in Medicine

installed under the floor.

http://www.spacequest.net/misc/fanfiction/fanstories/sq3fanfiction.shtml

The plate has a shape of uniform disk of radius
R=10m and induces gravity 1g (9.8m/s²) in the
center of the diner.

What is the mass of the plate?

2007-07-11 07:23:20 · 5 answers · asked by Alexander 6 in Physics

i have a tree in my back yard, but i dont know what kind it is.
the leaves have like 3 sections to it, and its sort of like a little jaggedy on each section, that sorta looks like a mountain. if u cant help me tell what type of leaves they are or the type of treem then can u tell me where i can find out?
i think that this type of tree is VERY COMMON, but i just dont know what type. this might help also: there are fuzzy catterpillars that grow on it called "banded tussock moth catterpillars, or pale tussock moth catterpillars"
thanx.
also, if u need more info, and since i cant post it here, please email me at sasha6321@yahoo.com
thanx.

2007-07-11 07:22:10 · 5 answers · asked by sasha6321 1 in Botany

(3/ x^2 - x - 2) - (4/x^2 +x -6) = 1/ 3x+3

2007-07-11 07:22:08 · 3 answers · asked by Misbah 2 in Mathematics

Specifically, some rocks for a science project, im trying to determine how much energy it would take to hurl these rocks a certain distance. But thier all different shapes and I only measured thier 3 major axis' ???????? Thank you!

2007-07-11 07:18:20 · 11 answers · asked by samantha 1 in Mathematics

I mean... Do they like actually being swatted at or something?

2007-07-11 07:17:47 · 3 answers · asked by Anonymous in Zoology

http://www.youtube.com/watch?v=KTcF-7opGLU

2007-07-11 07:16:40 · 2 answers · asked by mike 2 in Astronomy & Space

I missed a lecture in class as I was out of town, how do I solve this problem. No need to give me the answer, unless your very very kind. In either case i need to know how to do it. Or at least work it in reverse...

You live at a latitude of 39 degrees south. What is the angle between the southern horizon and the south celestial pole?

A. 45 deg. B. 23.5 deg. C. 39 deg. D. 51 deg. E. The answer depends on the day of the year.

Thanks, you help is appreciated.

2007-07-11 07:11:32 · 4 answers · asked by Anonymous in Astronomy & Space

Is it backwards, too? I forgot to check.

2007-07-11 07:10:41 · 8 answers · asked by Anonymous in Physics

Please provide with a complete applied example in diffrent cases with the necessery data needed.

2007-07-11 07:08:29 · 3 answers · asked by Magood 1 in Engineering

In the movie, Superman I, an astronaut's body exploded in space due to pressure in the internal body exterting outward into space where there is no pressure. Is that true? Or will the body freeze in space?

2007-07-11 07:05:04 · 9 answers · asked by dlac23 2 in Astronomy & Space

I realize the implications of such a question so take it easy on me. I am also aware that your mass would increase adinfinitem and so on ignoreing these for now Is it possible

2007-07-11 07:03:06 · 15 answers · asked by Anonymous in Physics

.x - 3 . . . . . . . . . 1
(------)^3 times(-----)^2
. . 2 . . . . . . . . . .x-3

help and explanation would be appreciated.
please ignore the dots..

2007-07-11 07:01:39 · 5 answers · asked by Anonymous in Mathematics

a small firm poduces both am and am/fm car radios. the am radios take 15h to produce and the am/fm take 20h. The number of production hours is limited to 300h per week. The plant's capacity is limited to a total of 18 radios per radios be produced per week. write a system of inequalities respresenting this situation.

Then draw a graph of the feasible region given these conditions in which x is the number of am radios and y the number of am/fm radios.

Could someone draw this graph for me i do not have the tools to do this please

2007-07-11 07:00:12 · 2 answers · asked by Anonymous in Mathematics

2007-07-11 06:59:09 · 3 answers · asked by Anonymous in Chemistry

I am going into 7th grade and got an algebra packet. I am almost finished, hust need help on some problems. DO NOT state the answer.

(^ means to the power of)

1. 3c^2(4c + 2) + 3c^3 - 3c^2 + 8

2. 3x (x^ + 5) + 7x^3 + 2x -4

3. (5c)(8c^6)

I appreciate ANYONE who helps, no matter how little. Thanks for looking!

2007-07-11 06:57:10 · 11 answers · asked by Anonymous in Mathematics

I was watching this program on the history channel about multiple ancient prophecies from different cultures and countries all over the world that say the world is going to end in 2012.

There was a segment where they were describing a phenomenon called polar reversal. What I got out of it is that when the planets align somehow the northpole and southpole will swap positions. but does that mean the whole earth will rotate for this to happen? The program said polar reversal will happen when the planets align in 2012 haven't the palnets aligned before with out anything happening why would the alignment in 2012 be different?

The program was called "decoding the past:doomsday 2012"

I would really apprciate the insight from people who have valid answers.

2007-07-11 06:56:06 · 7 answers · asked by Tone Teezy 2 in Astronomy & Space

id like to know how they originated , how was the atmosphere of the Earth back then ??
In fact , hw did the Earth come into existence .....???????

2007-07-11 06:54:43 · 19 answers · asked by The Master 1 in Earth Sciences & Geology

If there were no air to cause air resistance, which would fall faster when you drop it - a feather or a bowling ball?

2007-07-11 06:51:19 · 7 answers · asked by Anonymous in Earth Sciences & Geology

2007-07-11 06:51:14 · 7 answers · asked by harron s 1 in Physics

I am taking a timed standardized test shortly (MCAT), it is very chemistry and physics heavy. The calculations are not difficult, but I am not allowed a calculator and I need to think very quickly. I was wondering if anyone has any tips or ways to "think" about a problem for quick mental math. I'll give a couple examples: something like
(0.30/8) or (1200/0.6) or (.9)^3 or (.30)^.5 My problem in mainly in thinking about decimal divisions and squares QUICKLY.

2007-07-11 06:43:50 · 7 answers · asked by JackofAlltrades 2 in Mathematics

We can at will using our minds select any portion (freq/wavelength) of the spectrum wouldn't that be cool? What would you see or like to see, hmm?

2007-07-11 06:40:09 · 9 answers · asked by Anonymous in Other - Science