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Science & Mathematics - 21 July 2007

[Selected]: All categories Science & Mathematics

Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

Over the last few years the weather pattern have been very weird. Drought for 1 year and record rains the next.

We know they can seed clouds and things like that.

2007-07-21 15:58:06 · 2 answers · asked by cowboysfan19721972 4 in Weather

like a bunny or a cow or a monkey..

2007-07-21 15:53:55 · 12 answers · asked by U 2 in Zoology

step by step

2007-07-21 15:46:18 · 3 answers · asked by NECE 1 in Mathematics

and what does it do

2007-07-21 15:36:44 · 5 answers · asked by Anonymous in Medicine

15 raised 2 the 4th power minus 33+437 minus 4 raised to the 6th power

2007-07-21 15:34:22 · 8 answers · asked by Anonymous in Engineering

2007-07-21 15:27:25 · 9 answers · asked by bob w 1 in Engineering

19

why we can't used the sonar beam to know the distance between the earth and moon??

2007-07-21 15:20:19 · 12 answers · asked by Daireen 2 in Astronomy & Space

Please help me! Please explain as well...thank u so much if u do help me.

1) the current in a stream moves at a speed of 8mph. A boat travels 34 mi upstream abd 34 mi downstream in a total time of 7hrs. WHat is the speed of the boat in still water?

2) If a firm invests amount Po( the o is a zero) at an interest rate of r%, then a year later invests amount P1 at the same rate, then the total amount at the end of two years is given bby the formula A=Po (1 + r)^2 + P1 (1 +r). A firm invests $4000, then a year later invests an additional $2200. At the end of two years, it has a total of $6720. What is the interest rate?
(Answer should be like this: The interest rate is r=___%)(plz, round to the nearest integer).

THANK U SO MUCH IF U HELP ME!!! U guys r my heros in math! :P

2007-07-21 15:07:31 · 4 answers · asked by AnimalsFan 3 in Mathematics

2007-07-21 15:03:44 · 12 answers · asked by Eric Inri 6 in Engineering

4x - (2x - 5) = 2(x +10) - x, again, work out please, thanks in advanced.

2007-07-21 15:01:03 · 7 answers · asked by Anonymous in Mathematics

2007-07-21 14:59:00 · 4 answers · asked by david s 1 in Astronomy & Space

Multiply:

2m(5m -3)(4m +7)

2m * 5m - 2m *-3 +2m * 4m + 2m * 7=

10m^2 +6m + 8m^2 + 14m=

18m^2 + 20m~ thats the finally answer that i came up with. Is that right?

2007-07-21 14:56:40 · 5 answers · asked by jrseeg1rl 2 in Mathematics

Hi,

Is there a scientific explanation for this?

PLEASE DO NOT ANSWER WITH LINKS.

Thanks.

2007-07-21 14:52:09 · 14 answers · asked by survey taker 2 in Zoology

i don't have a clue what it does..........

2007-07-21 14:51:28 · 5 answers · asked by Anonymous in Engineering

8 = (12 - a) - 2, please work out i know a = 2 >.>

2007-07-21 14:50:55 · 4 answers · asked by Anonymous in Mathematics

2007-07-21 14:48:05 · 7 answers · asked by amazed we've survived this l 4 in Physics

Esther drove to work in the morning at an average speed of 45 miles per hour. She retruned home in the evening along the same route and averaged 30 miles per hour. If Esther spent a total of one hour communting to and from work, how many miles did Esther dirve to work in the morning?

I don't know, but the answer's supposed to be 18 somehow?

2007-07-21 14:47:42 · 4 answers · asked by Team_Balla 3 in Mathematics

Please if you answer... break it down so I can come to understand how to find density of a substance. This is NOT (NO LONGER) homework... but it will be covered on an extensive exam.

2007-07-21 14:43:01 · 5 answers · asked by adkins147 1 in Chemistry

can some please tell me the differance between ultrasound and ultrasonic.

2007-07-21 14:40:32 · 2 answers · asked by dcrc93 7 in Physics

1) A 10 kg piece of putty going 3 m/s hits and sticks to a 5 kg puck that is free to slide on the ice. How fast is the puck/putty combindation going immediately after the collision?
3 m/s
6 m/s
2 m/s
45 m/s
2) Answer all that are correct-
You run and jump on a swing. During which of the following motions is the total momentum of you and the swing conserved?
running at the swing (and accelerating)
jumping on the swing (the "collision" between you and the swing)
swinging up on the swing
swinging down on the swing
3)Answer all that are correct-
You run and jump on a swing. During which of the following motions is the total mechanical energy of you, the swing, and the Earth conserved? (Assume that the swing is well made so friction can be ignored.)
running at the swing (and accelerating)
jumping on the swing (the "collision")
swinging up on the swing
swinging down on the swing

2007-07-21 14:39:26 · 4 answers · asked by whitmeeeee 1 in Physics

soil nutrients which can be absorbed by plants...? Assume a primitive society without modern (or ancient) embalming techniques, or sealed caskets.

For example, in places where ancient battles were fought, and the dead armies were plowed under, how well will the grain grow afterward?

Some people tell me it will grow and be human-nutritive.

Others insist that crops will fail to grow or contain harmful chemicals or organisms due to the nature of the fertilizer.

Still others assume I actually have a dead body to practice on and threaten to sic CSI on me.

(Did it ever occur to you that if I had a dead body, I would not need to ask....? That I might refrain from asking, for fear of arousing suspicion...?)

Serious answers only, please. Thanks to all who answer.

2007-07-21 14:39:00 · 5 answers · asked by cdf-rom 7 in Other - Science

2007-07-21 14:38:55 · 6 answers · asked by amazed we've survived this l 4 in Astronomy & Space

2007-07-21 14:38:37 · 10 answers · asked by tish23 1 in Medicine

I've heard a lot about an experiment called "Shroedinger's Cat" while I've been reading up on theoretical physics, but I have no idea what the experiment is. Could anyone shed some light?

2007-07-21 14:31:22 · 7 answers · asked by Anonymous in Physics

Blood and flesh takes longer to digest than vegetable when processing in the human body? People who eat meat are fatter? What if beans don't have the right protein that the body needs?

2007-07-21 14:28:06 · 6 answers · asked by display name 2 in Biology

Firstly, thank you for concerning yourself with me, I truly appreciate it.


Now concerning my question:
The minor planet is known as 666 Desdemona and was discovered in 1908.

Any and all information about the minor planet would be appreciated and thank you so much!

2007-07-21 14:20:46 · 7 answers · asked by ♥Alley♥ 2 in Astronomy & Space

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