Science & Mathematics - 9 July 2007

A horse is pulling a heavy cart up a hill. The cart has 400 kg of mass inside it. The horse is pulling the cart with 10 N of force. What is the magnitude of the force on the horse due to the cart?

2007-07-09 12:18:31 · 1 answers · asked by greg1545 1 in Physics

What are Quarternary Activities?

2007-07-09 12:16:03 · 2 answers · asked by B[a]MBi 2 in Earth Sciences & Geology

2007-07-09 12:14:47 · 2 answers · asked by Anonymous in Biology

Do ACs generate more heat than they are able to move at a given time ?

2007-07-09 12:14:38 · 4 answers · asked by That Guy 4 in Engineering

So if heat is a form of energy, why cant we find a better way to utilize/move it than the current methods we have now.

2007-07-09 12:13:05 · 3 answers · asked by That Guy 4 in Engineering

2007-07-09 11:59:42 · 8 answers · asked by Fi 2 in Mathematics

2007-07-09 11:54:44 · 6 answers · asked by Anonymous in Astronomy & Space

If you could rap the fuel tank in one giant plastic bag, heat it so it would shrink around the tank it would prevent foam from strikeing the shuttle, why wont this work or why will it!

2007-07-09 11:54:26 · 4 answers · asked by Anonymous in Engineering

Simplify. Help please, I am really struggling and I have a test over this stuff in a week!

2007-07-09 11:47:26 · 5 answers · asked by Anonymous in Mathematics

I am checking my work and answer. I'm using the Integral test.

∞
∑ n^(-1/4) gives me f(x) = x^(-1/4)
n=1

∞
= ∫ x^(-1/4)dx
1

= lim ∫ x^(-1/4)dx
r->∞

........................ r
= x^(3/4)/(3/4) | = [(r^(3/4))/(3/4)] - [1/(3/4)] = ∞ - (4/3)
....................... 1

Which is Divergent? It doesn't feel right to me.

2007-07-09 11:47:03 · 2 answers · asked by ? 3 in Mathematics

2007-07-09 11:46:56 · 2 answers · asked by Anonymous in Engineering

2007-07-09 11:45:52 · 9 answers · asked by Anonymous in Engineering

I just thought of this kind of randomly but,

If your on a plane and its raining, and your already in the sky, way up in the clouds, would you see the rain going down, or would you still see it in the clouds and see it hitting the plane? My brother said it would look like it was going up but im not sure. If you know the answer thats great : ] good luck!

2007-07-09 11:42:46 · 9 answers · asked by ♥♥Abner♥♥ 2 in Weather

factor completely with respect to the integers.

3x^2-48

thanks!

2007-07-09 11:41:28 · 6 answers · asked by Anonymous in Mathematics

I'm going to be doing some survey data input into a database and I was wondering what type of graph to use. This got me thinking about what graph type is used for which? What are bar graphs for? pie graphs? histograms? etc. Could someone tell me what each type of graph does and what it's used for please? Thanks in advance!

2007-07-09 11:40:35 · 2 answers · asked by Rwar 2 in Mathematics

True/False?
A life cycle in an insect is usually the period of time that begins with the egg and ends with the adult (capable of reproduction). Some insects take just a few days to complete a life cycle. Others make take many years.

2007-07-09 11:40:13 · 5 answers · asked by Lauren P 1 in Biology

simplify each radical expression:
1.
-√m^4n^7

and

2.
1/5√[(75xy^2) (z^3)]

2007-07-09 11:39:01 · 3 answers · asked by Anonymous in Mathematics

2007-07-09 11:38:09 · 3 answers · asked by Lauren P 1 in Biology

why would monkeys disappear just because someone evolved from them? I guess few species of monkeys left. and can someone explain me this?

2007-07-09 11:35:09 · 17 answers · asked by . 3 in Biology

you know about the Big Bang theory right well if the big bang created everything in the universe then what created the big bang

please answer if you know science preferably adults to answer or some one with a science college class or a science teacher

2007-07-09 11:34:28 · 14 answers · asked by alex 1 in Astronomy & Space

my friend says it is a type of animal found on the sea floor but i think it is something sexual please help me!

2007-07-09 11:34:26 · 1 answers · asked by gggangsta 1 in Biology

2007-07-09 11:29:01 · 5 answers · asked by popwell56 3 in Astronomy & Space

2007-07-09 11:27:58 · 13 answers · asked by So Beautiful 3 in Geography

Since methane is a hydrocarbon, and fuels used in internal combustion engines are made up of hydrocarbons, would it be possible to use methane as a fuel for an internal combustion engine? I am unsure about this, and wanted to get in touch with someone who would know about this.

2007-07-09 11:27:02 · 5 answers · asked by Confused about life 2 in Engineering

2x + 8
--------- ?
x + 4

2007-07-09 11:26:33 · 5 answers · asked by Anonymous in Mathematics

this plannet will be struck from space , a super volcano will erupt . and recycling may that`s may save the planet , just so it can be destroyed by the other two .

2007-07-09 11:24:42 · 16 answers · asked by CHRISTOPHER H 2 in Astronomy & Space

If tinking moves in the eternal present, if it is present, then thinking doesn`t move at all. ?

2007-07-09 11:21:23 · 10 answers · asked by Anonymous in Astronomy & Space

2007-07-09 11:17:34 · 3 answers · asked by Anonymous in Earth Sciences & Geology

2007-07-09 11:14:19 · 6 answers · asked by jumper 3 in Other - Science

2007-07-09 11:14:00 · 7 answers · asked by Timotheus is my Roman name (?) 4 in Zoology