Science & Mathematics - 9 November 2007

What is the balanced equation for the reaction of a Group 2A(2) oxide with water?

2007-11-09 06:59:24 · 3 answers · asked by xxiangel 2 in Chemistry

Please give examples to! thanks!

2007-11-09 06:58:31 · 1 answers · asked by Anonymous in Physics

hey x

does any1 know anything about the 1 child policy in china?

like what punishments you would get if you didn't follow the policy?..

reasons why people wanted a boy not a girl..

What people would do with girls if they didn't want them?..

Why do birth rates and death rates differ?..

Or if you have any websites on it can you please tell me them.. it would be a great help :)

what benefits can you get from following the 1 child policy?..

why do people want large families?..

lol oh yeah i know its about only having 1 child lol

2007-11-09 06:58:08 · 4 answers · asked by x07denise07x 1 in Geography

Seems easy, but I frogot how to... Thanks!

2007-11-09 06:57:40 · 3 answers · asked by chemquestions1 1 in Chemistry

what is the number of beaches

2007-11-09 06:55:50 · 3 answers · asked by Robert T 1 in Geography

I would think after almost 40 years they'd have a resort on the moon or least talking about it, it seems like it won't happen during my lifetime

2007-11-09 06:51:54 · 17 answers · asked by Undead 3 in Astronomy & Space

Suppose that an apple at the top of a tree is pulled by earths gravity with a force of 1 newton another apple rests at the top of another tree that is twice as tall as the first would the force of gravity on the apple in the second tree be 1/4 as strong as that of the first?

2007-11-09 06:49:58 · 3 answers · asked by blond_n_punk 2 in Physics

In a parametric setting, not talking about regression, why do we have the equality of variance assumption in statistics? What would happen if that assumption were violated?

2007-11-09 06:45:40 · 1 answers · asked by Anonymous in Other - Science

2007-11-09 06:40:03 · 7 answers · asked by Fred S - AM Cappo Di Tutti Capi 5 in Earth Sciences & Geology

You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 meters per second per second. The pressure at the surface of the water will be 125 kPa, and the depth of the water will be 13.5 m. The pressure of the air in the building outside the tank will be 95.0 kPa.

Find the net downward force on the tank's flat bottom, of area 2.25 m^2, exerted by the water and air inside the tank and the air outside the tank.
Express your answer numerically in Newtons, to three significant figures.

2007-11-09 06:39:28 · 2 answers · asked by jmr_487 2 in Physics

A string with non-negligible mass m is attached to the ceiling and hangs vertically. You flick the string and create a transverse wave. As the pulse travels up the string, does the wave speed increase, decrease, or stay the same?

This problem was from my physics exam. I am uncertain of the logic of the correct answer. Any help would be appreciated. Thank you.

2007-11-09 06:38:06 · 4 answers · asked by kmaster2007 1 in Physics

I need help with these:
1)Describe how you might use 2 plants to demonstarte the importance of the sun to the process of photosynthesis.
2)Use a formula to show how light energy is converted to chemical energy in photosynthesis.
3)The term respiration is also used to desribe breathing. How is the cellular respiration that releases energy from glucose like breathing?
4) Contrast the way energy is released from simple food molecules in the presence of oxegen with the way it is released in the absence of oxegen.

PLEASE help me! I don't get these ?'s and i need help!
Thanx!
xoxo
yarely

2007-11-09 06:36:34 · 1 answers · asked by yarely_bueno 2 in Biology

1: The moon is only ______ as massive as the earth.
1/23
1/32
1/78
1/81


2: The force of gravity on the moon is ___ the force of gravity on the earth.
1/2
1/3
1/5
1/6

2007-11-09 06:29:16 · 6 answers · asked by Michele 1 in Astronomy & Space

If a vegetable is an edible part of a plant, all edible fruits should be both fruits and vegetables. Do you agree(why)?

2007-11-09 06:27:39 · 3 answers · asked by grungefan!!! 2 in Botany

∫ x * e^(px) dx

2007-11-09 06:18:46 · 2 answers · asked by cornz000 1 in Mathematics

For the equation:

x = sin(y) +y

How do you solve for y???

2007-11-09 06:16:33 · 3 answers · asked by jballa92944 1 in Mathematics

A particle, starting from point A in the drawing at a height h0 = 3.3 m, is projected down the curved runway. Upon leaving the runway at point B, the particle is traveling straight upward and reaches a height hf = 4.7 m above the floor before falling back down. Ignoring friction and air resistance, find the speed of the particle at point A.
________ m/s

http://www.webassign.net/CJ/06_82alt.gif

2007-11-09 06:16:19 · 1 answers · asked by Anonymous in Physics

http://en.wikipedia.org/wiki/Oblate
Is the short polar axis oriented vertically or horizontally?

2007-11-09 06:15:49 · 2 answers · asked by Alexander 6 in Physics

Three large pancakes, each of the same thickness are to be shared equally among four people. The diameters of the pancakes form a Pythagorean triple. Explain how to cut the pancakes to make a total of five pieces so that each person can get the same amount. Explain such reasonings!

2007-11-09 06:12:01 · 14 answers · asked by Unknown! 2 in Mathematics

Find the critical numbers of the function:

f(x) = x^3 + x^2 +x


(I tried it but if the quad formula gives a nonreal number, how can we find the critical numbers?)

2007-11-09 06:08:34 · 3 answers · asked by jeremy s 2 in Mathematics

when will people stop with this B/S? thats my question

2007-11-09 06:08:20 · 12 answers · asked by allineedisher1 1 in Astronomy & Space

boobies

2007-11-09 06:07:11 · 1 answers · asked by Anonymous in Zoology

and if its not infinite then what happens if you ever got to the end (yes its impossible) but just for the sake of conversation

2007-11-09 06:04:03 · 10 answers · asked by allineedisher1 1 in Astronomy & Space

what is a probable proximate and probable ultimate cause of this behaviour?

2007-11-09 06:01:06 · 3 answers · asked by yassem1ne 2 in Biology

This is just a start to my EVP book. thanks 4 ready in advanced!!!

Four o’clock; my favorite talk show is on. I didn’t care if the woman was talking about men’s health or how to bake chicken that could win you a million dollars. I watched her everyday and didn’t miss a single episode. I definitely wasn’t going to miss her today.
She was talking with members from the AAEVP (American Association of Electronic Voice Phenomena). I was a skeptic at the time and didn’t want to believe in it.

2007-11-09 06:00:02 · 4 answers · asked by Anonymous in Paranormal Phenomena

when nearing a black hole, it is said that there is a boundary known as the 'event horizon' which is like the line of no return,.....however, i was reading on a SECOND boundary line AFTER the event horizon.....it's like this:

| || |

it's like the first line is the event horizon, and between the single line and the double, is the space time dilation.,...after the the double lines, there is supposed to be a second horizon.....where the time dilation ENDS.....does anyone know the name of this horizon or where i can find good information on it/ ? does any one know of it? thanks! ^_^

2007-11-09 05:58:55 · 5 answers · asked by Anonymous in Astronomy & Space

2007-11-09 05:58:00 · 6 answers · asked by Alexander 6 in Physics

2007-11-09 05:55:41 · 17 answers · asked by mark r 2 in Astronomy & Space

Write as an EXPONENTIAL expression...?

3 / x^2

/ is used meaning Radical sign (Square Root)

Please help!

2007-11-09 05:48:14 · 4 answers · asked by ♥ ღAngelicaღ♥ 2 in Mathematics

I have some FACTS Physical, Scientific, and obserable, for you.
First the facts :: For the formation - creation of petrolium / oil / natural gas / methane/ coal and the family of hydrocarbons, there must be a large amount of vegetive growth (plant life), temperate climate conditions, rain fall in abundance, certain types of bacteria, time, and the sealing of the surface / some compression.
With this in mind :: How come there is oil / petrolium / hydrocarbons, under the North Polar Ice Cap i.e. Prudhole Bay, under the middle east's desert (Iraq, Iran, Saude Arabia, etc.) West Texas, Wyoming, Colorado, Canada, Off Shore(both east and west coasts), Under the Gulf of Mexico, Under Siberia, Russia?????
Do you say that the earth / global warming is NOT a normal cyclic condition? Do you say that the earth has had a stable temperature, since it's formation 4.5 BILLION years ago,and
geologists established 70 years ago, that the earth was over 2,000 DEGREES F*?400,000 years ago, USA was ice

2007-11-09 05:44:20 · 15 answers · asked by Anonymous in Earth Sciences & Geology