Science & Mathematics - 17 October 2007

option are a) railroads , b) highways c) education d) religion

2007-10-17 02:08:27 · 3 answers · asked by Anonymous in Geography

just wondering wen it began...and when will it end..

2007-10-17 02:04:49 · 13 answers · asked by ram 2 in Astronomy & Space

Why are different frequencies needed above and below the carrier frequency? Why can't a sound signal simply be sent over one frequency (the carrier). What is the purpose of the carrier anyways?

2007-10-17 02:02:00 · 6 answers · asked by Anonymous in Astronomy & Space

2007-10-17 01:58:26 · 9 answers · asked by AnnieG 4 in Weather

what would these type of people put forward about migrating to Australia?

- A Vietnamese restaurant owner
- A refugee from Afghanistan
- Department of Immigration and Multicultural and Indigenous Affairs employee
- An unemployed person
- and an environmentalist

Thanks a lot! xo.__

2007-10-17 01:55:52 · 1 answers · asked by Anonymous in Geography

A car has anacceleration of 20m/s^2, so what is the change of speed if it is driven for 10seconds?

2007-10-17 01:53:35 · 13 answers · asked by Paige 2 in Mathematics

Ive come to a place and got stuck i need to convert my findings into a vector equation from parametric form:
my results are:
x=-5-8t
y=3-7t
z=-9+3t

would the final answer just be:
r(t)=[(-5-8t), (3-7t), (-9+3t)]

any help would be great thanks

2007-10-17 01:51:18 · 2 answers · asked by Anonymous in Engineering

a boy wearing a white t-shirt and has a yellow duck sitting on a blue boat printed on it. he goes inside a room with red lights. which color will his t-shirt, duck and the blue boat look.????//

2007-10-17 01:51:17 · 5 answers · asked by Crab! 2 in Physics

a car has an acceleration of 20m/s^2. How long will it take to increase it's speed by 20m/s?

2007-10-17 01:51:09 · 4 answers · asked by Vicky G 2 in Mathematics

Does anyone know how to find the milky way aka earths solar system using Google. It seems the most important solar system they left out.

2007-10-17 01:51:08 · 5 answers · asked by C.Schwaby 2 in Astronomy & Space

Hydrogen sulfide decomposes according to the following reaction, for which Kc = 9.30 10-8 at 700°C.

2 H2S(g) <~> 2 H2(g) + S2(g)

If 0.46 mol H2S is placed in a 2.0 L container, what is the equilibrium concentration of H2(g) at 700°C?
____ M

2007-10-17 01:48:15 · 1 answers · asked by Kimberly L 1 in Chemistry

When 0.100 mol CaCO3(s) and 0.100 mol CaO(s) are placed
in an evacuated sealed 11.5 L container and heated to 385 K, P(CO2) = 0.220 atm after equilibrium is established.

CaCO3(s) <~> CaO(s) + CO2(g)

An additional 0.225 atm CO2(g) is then pumped into the container. What is the total mass (in g) of CaCO3 after equilibrium is reestablished?
_____ g

2007-10-17 01:44:21 · 1 answers · asked by Kimberly L 1 in Chemistry

what do they do to atrract a mate, and how do they care for their offspring also?

2007-10-17 01:40:39 · 6 answers · asked by curious 1 in Zoology

I need it for a project and no stupid answers.please.

2007-10-17 01:38:34 · 15 answers · asked by srnkt_13 2 in Earth Sciences & Geology

Is it true that all geostationary satelites are over the equator?
If that is so then their altitude is just governed by their mass?
Would it therefore be true that a satelite broadcasting to Europe would have to be higher than one broadcasting to Egypt, say, in order to see over the horizon

2007-10-17 01:37:46 · 9 answers · asked by Anonymous in Astronomy & Space

In order to void the vacuum effect of using a exhaust fan. (Making a dark room for photography) I don't have central a/c, and thus have run into a problem with the exhaust fan being functional due to the vacuum effect. Getting those harmful vapors out of the room are crucial. Have to keep the door and window blocked with fabric to block out all light. Thank you!

2007-10-17 01:36:05 · 3 answers · asked by giobarricader 1 in Other - Science

2007-10-17 01:34:25 · 2 answers · asked by Terri L 2 in Biology

2007-10-17 01:33:24 · 1 answers · asked by Terri L 2 in Biology

2007-10-17 01:32:14 · 1 answers · asked by Terri L 2 in Biology

2007-10-17 01:31:07 · 2 answers · asked by Terri L 2 in Biology

2007-10-17 01:30:29 · 6 answers · asked by Anonymous in Biology

2007-10-17 01:29:57 · 1 answers · asked by Terri L 2 in Biology

It wasn't until I was in my late teens that i understood that such things are allegedly true. Before that i only saw it on tv, thus the assumption was that it is fiction. In fact i thought aliens were 3 eyed monsters and ghosts were floating bed sheets. I never really had the idea of "extraterrestrial" and "spirits posing as dead people". It was new to me.

2007-10-17 01:13:14 · 13 answers · asked by Cyber 6 in Paranormal Phenomena

i need this in atleast by friday its for school...thx!

2007-10-17 01:00:36 · 2 answers · asked by Answerer 2 in Zoology

please help me do this problem,please,,,

summation notation symbol(n=1 to infinity) of { greatest integer function symbol, (cos pi/n + 1)}/2^n

2007-10-17 00:53:04 · 1 answers · asked by Anonymous in Mathematics

please help me do this problem,please,,,

summation notation symbol(n=1 to infinity) of { greatest integer function symbol, (cos pi/n + 1)}/2^n

2007-10-17 00:52:38 · 1 answers · asked by Anonymous in Mathematics

Two identical loudspeakers are driven by the same oscillator of frequency 200Hz. The speakers are located on a vertical pole a distance of 4.00m from each other. A man walks straight toward the lower speaker in a direction perpendicular to the pole.

a) How many times will he hear a minimum in sound intensity?

b) How far is he from the pole at these moments? Take the speed of the sound to be 330m/s and ignore any sound reflection from the ground.

2007-10-17 00:50:15 · 1 answers · asked by Anonymous in Physics

Would the world end?

2007-10-17 00:45:43 · 21 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-17 00:43:21 · 6 answers · asked by Anonymous in Zoology

I just wanted to know abt the AFMC....

2007-10-17 00:42:56 · 1 answers · asked by @@@@@@@@ 1 in Medicine