Science & Mathematics - 8 November 2006

2006-11-08 11:17:54 · 6 answers · asked by Anonymous in Mathematics

2006-11-08 11:16:35 · 3 answers · asked by Anonymous in Earth Sciences & Geology

2006-11-08 11:15:55 · 1 answers · asked by zach v 1 in Geography

A person stands on a scale in an elevator. The maximum and minimum scale readings are 771.7 N and 318.8 N, respectively.
The acceleration of gravity is 9.8 m/s^2.
Assume the magnitude of the acceleration is the same during starting and stopping, and determine the acceleration of the elevator. Answer in units of m/s^2.

2006-11-08 11:15:46 · 2 answers · asked by Anonymous in Physics

2006-11-08 11:15:40 · 2 answers · asked by Anonymous in Biology

60% of what is 45?
75% of what is 48?
What percent of 90 is 63?
45% of what is 99?
what is 39% of 1500?
what is 8.25% of 160?
what is 7% of 480?
what is 150%of 26?
what is 35% of 360?
45% of what is 36?
25% of what is 92?



and yes i would appreciated that u will show how u got the answer!!!!! thx.

2006-11-08 11:13:43 · 10 answers · asked by TolyaB 2 in Mathematics

When calcium reacts with aqueous hydrochloric acid, one substance produced is carbon dioxide gas according to the equation: CaCO3(s)+ HCl (aq) --CaCl2(aq)-CO2(g) + H2O
How many moles of the gas are produced for each m ole of the calcium carbonate?? balance the equation

2006-11-08 11:12:56 · 3 answers · asked by Anonymous in Chemistry

the question is:
A can of pop is gfiven a shove. It slides across a table, eventually coming to a stop. If its initial velocty is 2.0 m/s, and the coefficient of kinetic friction between the two surfaces is 0.20, how far will it travel across the table?

errr im struggling with this, i dont know how to find mass and im left with a whole bunch of unknown variables...please help, thanks!

2006-11-08 11:06:11 · 3 answers · asked by DOWNCAST 1 in Physics

- Most star systems are....
Single
Binary
Triple

-What is the deciding factor for the how a star will become a main sequence or ginat or super giant? _________

- Which Size star will have the shortest life span and why will it be the shortest? ____________________________

2006-11-08 11:06:10 · 4 answers · asked by jennifer 1 in Astronomy & Space

if dim(V) < dim(W), prove that T cannot be onto (surjective)
and
if dim(V) > dim(W), prove that T cannot be one to one (injective)

2006-11-08 11:06:07 · 3 answers · asked by Anonymous in Mathematics

2006-11-08 11:05:26 · 3 answers · asked by Anonymous in Mathematics

2006-11-08 11:04:12 · 3 answers · asked by Anonymous in Earth Sciences & Geology

i really do not understand percen porportions.
i know about the
is %
_ _
of 100 but i dont know where to put all the numbers
for ex: 9 is 15% of what number
plz explain how you figure it out..thx

2006-11-08 10:59:39 · 9 answers · asked by Anonymous in Mathematics

2006-11-08 10:58:02 · 9 answers · asked by Anonymous in Geography

IN MATH:

if the meal was $8.39 and u wanted to leave a 15% tip what would that be?

It is not my homework it is somethin' we talked bout in class.

So how would u figure it out.

PLEASE DON'T USE WORDS ONLY NUMBERS for the equation.

2006-11-08 10:56:24 · 11 answers · asked by Seismic Toss 1 in Mathematics

2006-11-08 10:56:19 · 7 answers · asked by Anonymous in Geography

i need to build a catapult no greater than 1.5-meter X 1.5-meter X 1.5-meters for physics. i cant buy a kit. It will be launching ballons. no motors or any type of fuel may be used. It must have a trigger that realeases the projectile. Any ideas? Any help will be greatly appreciated.

2006-11-08 10:54:57 · 5 answers · asked by mexshadyfan 1 in Physics

2006-11-08 10:54:23 · 1 answers · asked by wayne f 1 in Engineering

2006-11-08 10:53:45 · 2 answers · asked by Moon R 1 in Biology

2006-11-08 10:52:10 · 10 answers · asked by lexy 1 in Earth Sciences & Geology

2006-11-08 10:50:18 · 3 answers · asked by goring 6 in Physics

2006-11-08 10:49:48 · 4 answers · asked by sexy_angel_0822 3 in Mathematics

2006-11-08 10:48:47 · 12 answers · asked by Anonymous in Mathematics

It did today, starting about 11:12 AM, and it'll be finishing in just a few minutes.
I've had my telescopes and cameras on it all day, until it went behind a tree (I'll miss the end) :(
If you'd like to have a look, visit:
http://www.lefevre.darkhorizons.org/mt2006/

Great stuff.

2006-11-08 10:46:30 · 9 answers · asked by Anonymous in Astronomy & Space

2006-11-08 10:42:29 · 28 answers · asked by Levi 2 in Astronomy & Space

Chalk consists mainly of calcium carbonate, a solid that tends to be insoluble in water, but abe to dissolve in aqueous acids. If a box of chalk contains twenty pieces of chalk, and each piece has a mass of 10.0g, how many moles of calcium carbonate are present in the entire box?

2006-11-08 10:42:24 · 6 answers · asked by Anonymous in Chemistry

2006-11-08 10:40:03 · 4 answers · asked by Evolution KID 2 in Earth Sciences & Geology

2006-11-08 10:38:10 · 2 answers · asked by Evolution KID 2 in Earth Sciences & Geology

2006-11-08 10:37:05 · 2 answers · asked by Evolution KID 2 in Earth Sciences & Geology

2006-11-08 10:35:30 · 5 answers · asked by Anonymous in Medicine