Science & Mathematics - 11 September 2007

everything in the universe apparently falls into one of three categories, a flame isnt a solid because u can pass ur hand through it, it isnt a liquid because it doesnt take the shape of the container u place it in, and it isnt a gas because it doesnt fill the whole area. so what is it??

2007-09-11 09:41:23 · 30 answers · asked by Anonymous in Physics

2007-09-11 09:41:22 · 2 answers · asked by Anonymous in Chemistry

2007-09-11 09:39:36 · 12 answers · asked by dbrizzle. 1 in Mathematics

about a scientist why do they design experince

2007-09-11 09:38:10 · 10 answers · asked by lachele p 1 in Parapsychology

A 0.56 kg rock is projected from the edge of
the top of a building with an initial velocity of
10.2 ms at an angle 44degrees above the horizontal.
Due to gravity, the rock strikes the ground at
a horizontal distance of 17.8 m from the base
of the building.

Assume: The ground is level and that the
side of the building is vertical. The accelera-
tion of gravity is 9.8 ms^2 :
How tall, h, is the building? Answer in
units of m.

2007-09-11 09:37:44 · 2 answers · asked by Jaweida S 1 in Physics

is focalin a amphetamine or will it show up in a ua or a hair follical test

2007-09-11 09:36:14 · 1 answers · asked by linda r 1 in Chemistry

My ittle sister asked me to help her with her math, BUT I have no idea what a factor is!
Example: She needs to find the factors of 37 and 28.

2007-09-11 09:35:06 · 1 answers · asked by Anonymous in Mathematics

Hey guys, so for my Newton's Three Laws of Motion project I did pizza dough. So anyways, if the pizza dough hits the counter would that represent Newton's 3rd Law?

2007-09-11 09:34:13 · 2 answers · asked by Angel 1 in Physics

2007-09-11 09:32:15 · 12 answers · asked by ungoliant2 2 in Astronomy & Space

Q: Five maple trees and six ash trees are on sale for $83. Nine maple trees and eleven ash trees are on sale for $151. What is the cost of an Ash tree.....
I figured this much:
5m + 6a = 83
9m + 11a = 151
I know I have to substitute, but I keep getting a negative number.

2007-09-11 09:31:41 · 4 answers · asked by Anonymous in Mathematics

What do they use to make pesticide that they spray on our fruits and vegetables? Thanks

2007-09-11 09:26:13 · 2 answers · asked by Melissa♥ 6 in Botany

An artillery shell is fired at an angle of 78.5 degrees
above the horizontal ground with an initial
speed of 1880 m/s.
The acceleration of gravity is 9.8 ms^2 :
Find the total time of fight of the shell,
neglecting air resistance. Answer in units of
min.

2007-09-11 09:24:52 · 2 answers · asked by Jaweida S 1 in Physics

2007-09-11 09:24:02 · 3 answers · asked by Emma 1 in Zoology

2007-09-11 09:21:39 · 5 answers · asked by Anonymous in Zoology

Please show workings.

2007-09-11 09:21:08 · 6 answers · asked by Special K 1 in Mathematics

2007-09-11 09:20:36 · 2 answers · asked by talleditor 1 in Astronomy & Space

i got a shaft that is 18.5mm in diameter that needs a woodruff key. i dont have the dimensions of the holes for the key. i was wondering if there is a rule of thumb to use a certain size key for a certain size shaft. any help is appreicated.

again i got the same question about the cotter pins. i have a hole with a diameter of 3.5mm in diameter. i would assume that you would use a cotter pin thats close to that size. maybe 3.2mm or 3.3mm?

2007-09-11 09:18:44 · 3 answers · asked by Boozehound. 1 in Engineering

2007-09-11 09:16:11 · 15 answers · asked by willow 6 in Medicine

I need help quick

2007-09-11 09:15:54 · 4 answers · asked by Anonymous in Astronomy & Space

I need help quick

2007-09-11 09:14:55 · 2 answers · asked by Anonymous in Astronomy & Space

this might sound dumb but i really don't get why some units of measurement have exponents
need to know why to do my homework...

400 cm³ = ___ L?

400 cm³ = ___ m³ ?

all so confusing to me :/ giving the 10 points for whoever gives best explanation!!! thnanks :/

2007-09-11 09:13:04 · 4 answers · asked by No. 01 2 in Mathematics

I know it is an unorthodox question.

I am writing an article in which I have to describe the 'below standard medical facilities in a country" -- I was wondering if someone can paste a link here which describes any country's below avg medical care and facilities. Thanks alot !!!

2007-09-11 09:09:46 · 1 answers · asked by Anonymous in Medicine

help i need it quick

2007-09-11 09:09:38 · 1 answers · asked by Anonymous in Earth Sciences & Geology

Which of the following is a non-metal?

A. lithium, Li, Z = 3
B. bromine, Br, Z = 35
C. mercury, Hg, Z = 80
D. bismuth, Bi, Z = 83
E. sodium, Na, Z = 11

2007-09-11 09:07:08 · 14 answers · asked by Anonymous in Chemistry

What on earth is a cg??? and how does is it relate to g???
Help please, giving the 10 points for best explanation :/

2007-09-11 09:04:51 · 2 answers · asked by No. 01 2 in Chemistry

Which of the following elements are the least reactive?

A. alkali metals
B. noble gases
C. halogens
D. alkaline earth metals
E. metalloids

2007-09-11 09:01:48 · 6 answers · asked by Anonymous in Chemistry

2007-09-11 09:01:16 · 15 answers · asked by Cristina O 1 in Astronomy & Space

we need rain BADLY the restaurants cant wash dishes anymore! they have to serve in paper plates and pools are closed and the stores are running out of bottled water my parents and i just went and bought about 10 packs of water i think people are already fighting over water anyway is there a drought where you live and explain the details...

2007-09-11 08:59:53 · 13 answers · asked by ? 5 in Weather

Bromine is the only nonmetal that is a liquid at room temperature. Consider the isotope
bromine-81, (80 above 35) Br. Select the combination which lists the correct atomic number, neutron number, and
mass number, respectively.

A. 35, 46, 81
B. 35, 81, 46
C. 81, 46, 35
D. 46, 81, 35
E. 35, 81, 116

2007-09-11 08:56:37 · 3 answers · asked by Anonymous in Chemistry

2007-09-11 08:56:12 · 10 answers · asked by a_n_d_r_e_w.g_i_b_s_o_n 1 in Earth Sciences & Geology