Science & Mathematics - 2 October 2007

What in the world is Halite? I have to do a report on it? what is it?

2007-10-02 11:16:13 · 5 answers · asked by Anonymous in Earth Sciences & Geology

Barium sulfide is one product of the reaction between hydrosulfuric acid and barium hydroxide; the other is water. Write the chemical reaction. including the formulas for the reactants and products.


Not sure of this. Please Help. Thanks! :)

2007-10-02 11:14:02 · 1 answers · asked by CrimsonRider 1 in Chemistry

What is the star closest to the Earth? I need to know!

2007-10-02 11:13:40 · 7 answers · asked by Anonymous in Astronomy & Space

does anyone know?,thankyou

2007-10-02 11:12:07 · 1 answers · asked by lol 1 in Biology

why is it that when you say A-bomb or H-bomb people tend to think of those impressive big bright balls of fire, or those big mushroom clouds. similar to these:
http://clintjcl.files.wordpress.com/2006/06/delme-h-bomb.jpg
http://www.astro.virginia.edu/class/oconnell/astr121/im/castle-romeo2-ex.jpg

but they never think of pictures like these?
http://students.umf.maine.edu/~donoghtp/hiroshima2.gif
http://pegasus.phys.saga-u.ac.jp/imagesMac-PC/ForPEACE/HiroshimaHosp.jpg
http://img53.imageshack.us/img53/572/nagasaki2if7.jpg

2007-10-02 11:11:37 · 7 answers · asked by mrzwink 7 in Physics

A block of mass 0.600 kg is suspended using a spring and a string as shown in the diagram. In this situation, the spring is stretched and its length is 12 cm. The relaxed length of the spring is 7 cm.

a.)Find the tension in the string. Start from a fundamental principle and show all work.

b.)What is the spring constant ks of the spring. Show all work.

Please show how you did it too...I'm studying.

2007-10-02 11:08:31 · 1 answers · asked by Anonymous in Physics

something i have to do for science....HELP PLEASEEEEE

2007-10-02 11:06:56 · 4 answers · asked by hcombs23 1 in Earth Sciences & Geology

Ok the equation is x^2+3=2x

As an answer i got 2(+)(-)2i sqrt 2 / 2. When I simplify it i get, 1(+)(-)i sqrt2 .

Is this is the right answer? How do I check? Please help. Thanks in advance.

2007-10-02 11:02:08 · 3 answers · asked by Anonymous in Mathematics

10 points to the best reponse... Good luck!

2007-10-02 10:55:52 · 7 answers · asked by Anonymous in Physics

2007-10-02 10:55:50 · 1 answers · asked by Anonymous in Biology

2007-10-02 10:52:28 · 6 answers · asked by morandamario406 1 in Weather

My math teacher told my class 11 + 3 = 2.
My question is HOW?
thnx

2007-10-02 10:51:37 · 12 answers · asked by Cookie. 2 in Mathematics

travels through the particles, attracting as it approaches, and repelling as it leaves from the other side?

2007-10-02 10:48:48 · 6 answers · asked by vEngful.Gibb0n 3 in Physics

On the planet Jupiter, one day is equal yo 9.925 hours on Earth.

2007-10-02 10:48:03 · 5 answers · asked by Anonymous in Astronomy & Space

This is for a homework assignment that is due soon... If someone would help me, it would be much appreciated!

2007-10-02 10:46:49 · 2 answers · asked by ghike27 2 in Chemistry

why is it ectothermic or endothermic. this is for a school project

2007-10-02 10:46:16 · 3 answers · asked by eastern360 2 in Biology

The question is: Does a satellite at a low tilt angle, low altitude orbit see more or less of Earth's surface than a satellite at a high tilt angle, low altitude orbit as it revolves around Earth? Why?

Please help me...I am totally lost on this one. Thanks!

2007-10-02 10:45:15 · 2 answers · asked by always_wondering94 1 in Astronomy & Space

2007-10-02 10:43:31 · 1 answers · asked by koollook 1 in Chemistry

how do you convert pounds to kilos its for science homework help please!

2007-10-02 10:41:35 · 8 answers · asked by Anonymous in Mathematics

I'm working on a take home quiz and so far I have 1 I'm not sure of. I have half of it done. I won't put the base but I want to make sure I combined it right. I'm thinking that it turns into a fraction because of the negative 3/4. Anyways....it's
-3/4 log (x+2) + log (2x-1)^1/2

I already know how to do the second half, it's just the first part with the -3/4 that I want to check! thanx!!!

2007-10-02 10:38:49 · 1 answers · asked by angelicasongs 5 in Mathematics

2007-10-02 10:38:41 · 2 answers · asked by ladyvolfan 2 in Biology

A driver traveling at 58 km/h sees a chicken dash out onto the road and slams on the brakes. Accelerating at -7 m/s2, the car stops just in time 23.8 m down the road. What was the driver's reaction time (i.e., the time that elapsed before he engaged the brake)?

If u don't know for sure, please don't try. Thanks!

2007-10-02 10:33:39 · 3 answers · asked by Bollywood Masti 4 in Physics

Dynamics

2007-10-02 10:28:20 · 5 answers · asked by Jupiter 1 in Physics

I need to describe a Hydrogen bomb to a 3rd grader in a report I'm doing, but saying, "A nuclear weapon that derives its destructive force from nuclear reactions of fusion or fission," would not be understandable by the average 3rd grader.

2007-10-02 10:28:18 · 5 answers · asked by minicruzer911 3 in Physics

for. ex....how could i know what is e^(ln2) ...w/o using a calculator

2007-10-02 10:25:27 · 6 answers · asked by ruby 2 in Mathematics

time / position
0.0 / 5.0
5.0 / 10.0
10.0 / 40.0
15.0 / 40.0
20.0 / 0.0
A) how far did you travel
1)0-5s
2)5-10s
B) what is your average velocity at the previous time frames

2007-10-02 10:23:17 · 1 answers · asked by i love.. 1 in Physics

Here is a physics problem I need to do, so if you could tell me the formula to use to solve it, that would be great.


"A 3250 kg aircraft takes 12.5 min to achieve its cruising altitude of 10.0 km and cruising speed of 850 km/h. If the plane's engines deliver, on average, 1500 hp during this time, what is the efficiency of the engines?"

2007-10-02 10:23:01 · 2 answers · asked by Coma White 5 in Physics

How far does it move horizontally?
_m
How far does it move vertically?
_m

2007-10-02 10:21:42 · 1 answers · asked by Anonymous in Physics

2007-10-02 10:20:29 · 6 answers · asked by Anonymous in Zoology

NOTE: This is not homework!!

This is part of a project, Thanks!!

2007-10-02 10:18:49 · 6 answers · asked by Jeremiah Johnson 7 7 in Mathematics