Science & Mathematics - 13 November 2006

How does the nebular hypothesis for our solar system formation account for the presence of several moons around the outer solar system planets? Does it also explain why these moons are so different from each other?

2006-11-13 17:50:40 · 3 answers · asked by victimofthekillers 1 in Astronomy & Space

The tunnel under the english channel that connects england and frances is the worlds longest. There are actutally three seperate tunnels built side by side. Each is a half-cylinder that is 50,000 meters long and 4 meters high (think of a long pipe cut in half the lng way). How many cubic meters of dirt had to be removed to build this tunnel?

2006-11-13 17:46:31 · 5 answers · asked by lj 1 in Mathematics

plese dont leave out a single step, or a sngle process,think of me as being dumb and dont leave out a sngle step or detail i just love all of u!!!!!!!!

2006-11-13 17:44:23 · 11 answers · asked by crystal w 1 in Mathematics

we have 13, five-hundred pound men streaking down the road at 37 miles per hour, how long will it take these large men to streak 15 miles, if these men stop for 2 minutes because they see a hot dog stand and decide to eat, then carry on at the same speed for the remainder of the distance???

2006-11-13 17:42:19 · 3 answers · asked by bigschwinger 2 in Physics

How many solutions are there to the equation x1 + x2+ x3 + x4 = 13

where x1, x2, x3, x4 are non-negative integers?

Full working needed.

2006-11-13 17:37:22 · 2 answers · asked by Anonymous in Mathematics

Given is the following: A function f(x) is differentiable at some x = x_0 if the following condition holds: f(x) - f(x_0) = f'(x_0)(x-x_0)+ E(x) assuming there is an E(x) that exists such that E(x)-->0 as x--> x_0, and E(x_0) = 0. PROVE that differentiability of a single-variable function implies continuity for that function. Proof. One way of defining continuity is as follows: A function f(x) is continuous at x_0 if lim x-->x_0 f(x) exists and equals f(x_0). Taking lim x-->x_0 of both sides of the expression given in the definition of differentiability at x = x_0, we have lim x-->x_0 (f(x) - f(x_0)) = lim x-->x_0 (f'(x_0)(x-x_0)+ E(x)) Rewriting, we have lim x-->x_0 (f(x)) - f(x_0) =lim x-->x_0 f'(x)(x - x_0) + lim x-->x_0 (E(x)) By our definition of E(x) and by simple properties of limits, we simplify to lim x-->x_0 (f(x)) = 0 + lim x-->x_0 (E(x)) lim x-->x_0 (f(x)) = f(x_0) , a sufficient condition for continuity.

2006-11-13 17:37:07 · 3 answers · asked by Anonymous in Mathematics

We never did anything even close to this in class, and i cant find help in the textbook, im desperate, please help me...

"Small quantities of oxygen gas are sometimes generated by heating KClO3 in the presence of MnO2 as a catalyst:



2KClO3(s) → 2KCl(s) + 3O2(g)



What volume (ml) of O2 is collected over water at 20.0 oC by the reaction of 0.261 g of KClO3 if the barometric pressure is 722.7 mm Hg
The vapor pressure of water at 20.0 oC is 17.5 mm Hg. "

2006-11-13 17:36:20 · 3 answers · asked by Paul S 2 in Chemistry

2006-11-13 17:34:40 · 13 answers · asked by aliah_natasya2003 1 in Medicine

A uniform bar has two small balls glued to its ends. The bar is 2.00 m long and with mass 4.00 kg, while the balls each have mass 0.500 kg and can be treated as point masses.

1. Find the moment of inertia of this combination about an axis perpendicular to the bar through its center.

2. Find the moment of inertia of this combination about an axis perpendicular to the bar through one of the balls.

3. Find the moment of inertia of this combination about an axis parallel to the bar through both balls.

4. Find the moment of inertia of this combination about an axis parallel to the bar and 0.500 m from it.

2006-11-13 17:33:19 · 1 answers · asked by Anonymous in Physics

Small quantities of oxygen gas are sometimes generated by heating KClO3 in the presence of MnO2 as a catalyst:



2KClO3(s) → 2KCl(s) + 3O2(g)



What volume (ml) of O2 is collected over water at 20.0 oC by the reaction of 0.261 g of KClO3 if the barometric pressure is 722.7 mm Hg
The vapor pressure of water at 20.0 oC is 17.5 mm Hg.

How do you do this?

2006-11-13 17:25:37 · 1 answers · asked by Paul S 2 in Chemistry

2006-11-13 17:20:46 · 19 answers · asked by dschilly 1 in Astronomy & Space

I have looked and looked and I have not been able to find a definition of inches of water with respect to a measurement of pressure.

2006-11-13 17:20:16 · 3 answers · asked by CoveEnt 4 in Engineering

We hold these truths to be self evident. That all men are CREATED equal and that they are endowed by their CREATOR with certain inalienable rights...............

How can one intellectually accept the Declaration of Independence's assertion of our being CREATED and having rights given by our CREATOR and at the same time reject ANY DISCUSSION of a CREATOR?

I am not some nit wit leather lunged evangelist. I have considerable formal education and my IQ is higher than either Bill or Hillary's. So please don't dismis my question as that of a kook.

2006-11-13 17:19:29 · 8 answers · asked by Ted 2 in Biology

2006-11-13 17:17:21 · 4 answers · asked by Da Vinci's Code 3 in Astronomy & Space

2006-11-13 17:17:20 · 1 answers · asked by Voltage Transformer 33kV 5 in Engineering

I know its an ant, and from the scientific name I can gather that it lives in California, but I need to know the common name and any other possible links that would lead me to information and NOT pictures about this articular species.

2006-11-13 17:12:16 · 3 answers · asked by sporty_crazy_babygal 1 in Zoology

we have 200, four-hundred pound men, traveling 180 miles per hour in a 1976 bus going around a race track which is 1.8 miles long, how long will it take this bus with these men to travel around the track 800 times???

2006-11-13 17:12:01 · 4 answers · asked by bigschwinger 2 in Physics

my physics test is tomorrow and I have no clue when things tip or slide. can anybody explain it in detail or can you post websites that explains it

2006-11-13 17:11:45 · 1 answers · asked by Anonymous in Physics

2006-11-13 17:10:36 · 12 answers · asked by candi=yummi 1 in Other - Science

Or can every material be brought to the same temperature as another?

2006-11-13 17:08:43 · 6 answers · asked by newyorktocountry 2 in Other - Science

I can understand why our hands and sometimes feet get wrinkly after being in water too long, but why doesn't the rest of our skin, on our arms and legs and chest for example, get wrinkly as well?

2006-11-13 17:05:41 · 4 answers · asked by Megan 2 in Biology

What independent scientific evidence do we have of UFOs?

2006-11-13 17:04:59 · 6 answers · asked by Ted 2 in Astronomy & Space

2006-11-13 17:03:43 · 8 answers · asked by Megan 2 in Botany

Thats it!!

2006-11-13 17:03:36 · 9 answers · asked by Anonymous in Zoology

I know that oxygen is taken from our lungs and delivered throughout the body through our bloodstream, but why oxygen? Why does it give us energy?

2006-11-13 17:02:06 · 8 answers · asked by Megan 2 in Biology

in the section of fermentation

2006-11-13 17:01:01 · 3 answers · asked by tharani 1 in Botany

I need to know now!! for a project i am doing! so please replie fast!!

2006-11-13 16:55:01 · 8 answers · asked by IRMA F 1 in Zoology

Can anyone knows

2006-11-13 16:53:42 · 11 answers · asked by Deep 1 in Astronomy & Space

Please give me a list of all the English counties including Metropolitan areas such as greater london or Birmingham. If you are really keen you could add Welsh counties too.

2006-11-13 16:53:16 · 8 answers · asked by soul_cats 1 in Geography

Just a random thought, ive never seen a penguin egg.. so i got curious

2006-11-13 16:52:26 · 14 answers · asked by Chuyito 3 in Zoology