Science & Mathematics - 6 November 2007

2007-11-06 03:25:02 · 6 answers · asked by amanda h 1 in Mathematics

2007-11-06 03:24:49 · 15 answers · asked by mikl0vl 2 in Biology

can someone take me through the steps of solving dy/dx of the equation y=4/x^2+X√x.
Thankyou.

2007-11-06 03:24:37 · 1 answers · asked by Anonymous in Mathematics

A. Earth and Mars.
B. Jupiter and saturn.
C. Mars and Jupiter.
D. Saturn and Uranus.

2007-11-06 03:24:14 · 4 answers · asked by Anonymous in Astronomy & Space

2007-11-06 03:23:29 · 15 answers · asked by Alexander 6 in Mathematics

A. highlands.
B. rilles.
C. maris.
D. Umbra.

2007-11-06 03:22:39 · 1 answers · asked by Anonymous in Astronomy & Space

I heard that only humans have the ability to laugh? Is that true?

2007-11-06 03:22:19 · 10 answers · asked by Tom S 7 in Zoology

A. brightness.
B.Composition.
D.Color.
D. mass.

2007-11-06 03:20:10 · 2 answers · asked by Anonymous in Astronomy & Space

A. Jupiter
B. Saturn
C. Neptune
D. Venus

2007-11-06 03:18:29 · 8 answers · asked by Anonymous in Astronomy & Space

2007-11-06 03:17:23 · 13 answers · asked by Anonymous in Mathematics

A. Earth's shadow fakks in the moon.
B. The moon's shadow falls on Earth.
C. Earth moves out of the plane of the moon-sun orbit.
D. The moon moves out of the planeof the Earth-sun orbit.

2007-11-06 03:16:33 · 5 answers · asked by Anonymous in Astronomy & Space

How do you derive the equation Cov(x1, x2) = E[(x1-mu1)*(x2-mu2)] from the alternate equation for Covariance, Cov(x1,x2) = E(x1x2) - E(x1)E(x2) ? I am positive that I have to go from the latter to the first mentioned. I know E(x1)=mu1 and E(x2)=mu2 but I am not quite sure where to go from there.

2007-11-06 03:12:30 · 1 answers · asked by Anonymous in Mathematics

2007-11-06 03:12:16 · 1 answers · asked by Anonymous in Mathematics

The figure shows a circle with radius 1 inscribed in the parabola y=x^2 . Find the center of the circle.

Please give me step by step instructions if you can!
Thanks

2007-11-06 03:09:37 · 3 answers · asked by George23 3 in Mathematics

I have been watching the news when ever there is a natural dessater in the world and how the weather has been changing a lot with each year. I hear that the myans told a lot with the earth and what it is going through. I want to stat understaning where i can go on the web to reseach it more so that way i can understand what it means. I live on the coast line and i am set inland where i am safe from the water but i also live where there are a lot of fault lines are and i know of at leat 2 or 3 inactive valcanos. i would like to know where i can go to learn more. hope you can understand this.

2007-11-06 03:08:19 · 4 answers · asked by Brook F 1 in Earth Sciences & Geology

I think the speed of light can be misleading. It causes one to think that light accelerates -to or radiates-at its max speed. Which is roughly around 186,000km per second in a vaccum also referred to as (c). Is this an objective measurement? Perhaps 186,000km per second (Speed of electromagnetic radation in vaccum) is the fastest that our eyes/brain can register lights information? The data has to be there before we can receive it, correct? Perhaps this is why the speed of light is the same in all refrence frames? Does light really have a speed? They say that it travels at different speeds in different mediums, right? Faster in a vaccum and slower in air. So if light travels in a vaccum, through air, back in a vaccum, through air - its speed will accelerate/decelerate according to the medium? Thats like a bullet traveling faster when it exists a body. Am I saying that light travels instantaneously? Well, are we ever without light? That would be a black hole, right?

2007-11-06 03:07:13 · 13 answers · asked by Future 5 in Astronomy & Space

can there be a ufo
aliens

2007-11-06 03:04:06 · 20 answers · asked by mokap1471 1 in Astronomy & Space

Write a quadratic equation ( in the form ax^2+bx+c=0) whose roots are 2 and -2/3

I think I should work backwards from the roots to find the quadratic equation but am unsure how to do that.

2007-11-06 03:03:06 · 6 answers · asked by Anonymous in Mathematics

What Credentials are needed?
Special skills?
What would your job title be?
Projected need for this vocation?
Average salary?
-i've only been able to find info on the bioluminescent creatures.

2007-11-06 03:00:40 · 1 answers · asked by Anonymous in Biology

Is there a method for solving a SYSTEM of two differential equations of second order with two variables, without reduction to a system of 4 differential equations of first order?

2007-11-06 02:59:45 · 1 answers · asked by Wintermute 4 in Mathematics

2007-11-06 02:56:27 · 15 answers · asked by Anonymous in Astronomy & Space

In the news, the countries around Israel, Iran, etc are referred to as the Middle East. In the ancient history departments and archeology books, they're referred to as the Near East. So which is it and why?

If Japan is the Far east then surely the Middle East would be countries around India. Countries around Saudi Arabia are too far west to be called Middle Eastern.

2007-11-06 02:55:46 · 13 answers · asked by Anonymous in Geography

Why are illustrations of the universe always elliptical if the universe when viewed in all direction seems to be the same ?

2007-11-06 02:50:32 · 2 answers · asked by gdc 3 in Astronomy & Space

2007-11-06 02:48:02 · 11 answers · asked by mikl0vl 2 in Geography

i'm making a food chain for a class and I need to know if there is anything that eats buzzards.

2007-11-06 02:45:41 · 5 answers · asked by 100kurisu 1 in Zoology

2007-11-06 02:44:06 · 9 answers · asked by Anonymous in Astronomy & Space

2007-11-06 02:40:43 · 2 answers · asked by Anonymous in Astronomy & Space

2007-11-06 02:40:40 · 2 answers · asked by lamont 1 in Zoology

while cooking, it does not heat the utensil. It only cooks food.
Without heating the utensil, how is it possible to cook food in the utensil? Without any contacts between the heater and food to be cooked, how does heat radiates?

2007-11-06 02:40:04 · 3 answers · asked by Ramu 1 in Physics

2007-11-06 02:39:25 · 3 answers · asked by Ashley 2 in Chemistry