Science & Mathematics - 16 September 2006

2006-09-16 15:10:18 · 23 answers · asked by misty 1 in Other - Science

by an estimate a liter of air weighs 1.25 grams, and a liter of helium is 0.18. So basically anything under a gram of weight will float. So thats to say if you were to put a vacuum in a liter bottle it would float even better since a vacuum has zero grams of weight. But what I am most curious about is if you put a vacuum in a bottle and a helium in another bottle wouldnt the vacuum bottle collapse? And why is it that the helium bottle wont? The range between 0.18 and 0.00 is not much so why such an extreme difference?

2006-09-16 15:06:00 · 5 answers · asked by SRK 1 in Physics

the article about it

2006-09-16 15:05:03 · 27 answers · asked by christopher 1 in Astronomy & Space

if the assumption is that gravitational potential at the surface of the earth to be zero, can we use the equation F=GMm/(r)^2?? Whats the meaning of the assumption? we use Energy=mgh instead??? Eg A mass of 2kg is at poiunt p, a height 3m above the surface of earth, to find the gravitational field strength at p what do we do?????????

2006-09-16 15:03:44 · 6 answers · asked by Big bird 1 in Physics

7.4-3.4+2.6=7.4+2.6-3.4

2006-09-16 15:02:22 · 4 answers · asked by nisha 1 in Mathematics

does anyone know any websites that tell you if your going to have a tornado or not.im on a tornado watch

2006-09-16 15:01:31 · 17 answers · asked by Anonymous in Weather

2006-09-16 14:58:02 · 2 answers · asked by scully 2 in Biology

this for a chem lab

2006-09-16 14:56:45 · 1 answers · asked by SphinxEyez999 2 in Chemistry

2006-09-16 14:54:51 · 3 answers · asked by pxn114 1 in Engineering

do you no if theirs going to be a tornado in ponca city oklahoma,it says tornado watch but do u think we will have a tornado.

2006-09-16 14:54:23 · 17 answers · asked by Anonymous in Weather

2006-09-16 14:52:12 · 1 answers · asked by sonya b 1 in Biology

2006-09-16 14:51:08 · 10 answers · asked by MAK 6 in Chemistry

2006-09-16 14:49:21 · 5 answers · asked by Anonymous in Medicine

2006-09-16 14:47:41 · 8 answers · asked by Nurse Nancy 1 in Biology

it goes forward and flies or else

2006-09-16 14:45:52 · 6 answers · asked by Anonymous in Other - Science

2006-09-16 14:44:44 · 11 answers · asked by pxn11 1 in Engineering

2006-09-16 14:44:26 · 18 answers · asked by Anonymous in Geography

define/describe each of the 4 concepts of the traditional nursing metaparadigm (person, environment, health, nursing)

What do each of these concepts mean to you?

Give an example from your own practise to support your description. I just want to know what everyone's opinions are?
Thanks

2006-09-16 14:36:05 · 1 answers · asked by Lady Mandeville 6 in Other - Science

It means going against or faster than the time. How is it scientifically possible?

2006-09-16 14:35:44 · 18 answers · asked by Anonymous in Physics

2006-09-16 14:35:30 · 5 answers · asked by Anonymous in Earth Sciences & Geology

I saw the most different sunset tonight. (I am in Illinois). When I saw this sunset the sky was pink with blue rays coming from the middle of the sunset. It almost looked like a shadow of the sun with rays in the sky. I just wondered what it was.

2006-09-16 14:29:26 · 4 answers · asked by teachergirl 1 in Weather

I've tried to do it by using the points 0,0,0 and two other points contained in the line and creating a matrix. However, whenever i try to calculate it, I end up recieving a singular matrix error in my calculator. The points arnt collinear, why is this?

2006-09-16 14:28:28 · 1 answers · asked by imcool1466 1 in Mathematics

2006-09-16 14:24:16 · 10 answers · asked by Candidus 6 in Engineering

Scary thought. Every 700 Million years. Now, give or take 100,00 years.

2006-09-16 14:21:49 · 2 answers · asked by Anonymous in Other - Science

i just dont understand these problems:

1. region bounded by graph of f(x)=cosx and the x-axis, x E [-pi/2, pi/2], is revolved about the x-axis. find the volume of the resulting solid.

2. region bounded by the y-axis and the graphs of y=sinx and y=cosx, 0
TIA

2006-09-16 14:18:00 · 2 answers · asked by DoughboyFresh 2 in Mathematics

im wondering, is the current event of E Coli spinich related to geography 12, can anyone tell me

2006-09-16 14:13:31 · 4 answers · asked by blah 3 in Geography

Please I am desperate to know!!! I am a college student at USC and i'm stuck on this question!!

2006-09-16 14:12:36 · 20 answers · asked by El Quijote 1 in Geography

2006-09-16 14:10:17 · 6 answers · asked by oliro2004 1 in Astronomy & Space

A) 1/3
B) +infinity
C) - infinity
D) 1
E) none of these

Please solve step by step. I do not understand how to figure out this problem.

2006-09-16 14:04:23 · 5 answers · asked by jasmine r 1 in Mathematics

Im making a cell mode. It is a model of a cuboidal cell? I need to know what is on the inside of a Cuboidal Cell and what part of the cell it would be located in.

2006-09-16 13:59:03 · 3 answers · asked by ericsawyer404 1 in Biology