Science & Mathematics - 15 September 2007

2007-09-15 11:43:34 · 2 answers · asked by Anonymous in Physics

2007-09-15 11:40:27 · 5 answers · asked by MAK 6 in Medicine

We did a lab where we had to remove soap from water... We tested with different substances. We had to put plaster of paris, borax, epsom salt, and sugar into 4 seperate test tubes filled with a soapy water mixture. By shaking the test tube, soap suds would arise, and we were to measure them. Then we compared with a plain test tube filled with just soapy water. The plaster of paris removed the most soap from the water!

Now we have questions to answer and i am really confused with this one:

What criteria did you use to determine if your experiment worked?

Does anybody have a clue? PLEASE? =[

2007-09-15 11:40:24 · 2 answers · asked by addisyn 2 in Chemistry

extra terrestial life is monitoring the earth what do you think their opinions of humans would be?

2007-09-15 11:39:28 · 20 answers · asked by Anonymous in Astronomy & Space

A 3.90 kg penguin runs onto a huge horizontal sheet of frictionless ice. The sheet lies on the xy-plane. At t = 0 s it is at x = 0 m and y = 0 m with an initial speed of 0.71 m/s along the positive x-axis. It slides while being pushed by the wind with a force of 0.53 N directed along the positive y-axis. Calculate the penguin's speed at t = 7.43 s.

2007-09-15 11:37:03 · 2 answers · asked by Dustin D 1 in Physics

I think that it is more likely there is a habitable planet on the opposite side of the sun than there are aliens coming from 1000's of light years away. Also this would sense because they would visit us because we could potentially hurt there planet if we destroy ours.

2007-09-15 11:36:21 · 15 answers · asked by Anonymous in Astronomy & Space

2007-09-15 11:36:20 · 4 answers · asked by Anonymous in Biology

What part of the atom does it come from?

2007-09-15 11:33:39 · 16 answers · asked by futuretopgun101 5 in Physics

i have an essay to do! help please!

2007-09-15 11:33:17 · 4 answers · asked by Anonymous in Astronomy & Space

The total distance of an ice skating course is 200 km, and the record time for covering it is 5 hours, 40 min, 37 sec.

a: what is the average speed of the race?

b: If the first half of the distance is covered by a skater moving with a speed of 1.05v (where v is the average speed found in (a), ) how long will it take to skate the first half?

2007-09-15 11:32:55 · 1 answers · asked by fatiimaq08 3 in Physics

2007-09-15 11:32:07 · 5 answers · asked by Blake T 1 in Engineering

When I enter [x/4] + x in the y= section, why doesn't it graph?
Instead I get an error message that says there's something wrong with the syntax, but that's how the teacher told us to enter it.
(I've tried just entering [x], but that doesn't come up either.)
Thanks in advance to you math geniuses...unless of course it's something obvious :)

2007-09-15 11:31:29 · 4 answers · asked by trace 4 in Mathematics

Me and my family used to live there when i was younger, alot of paranormal activity happened then. But nothing on the internet about it. It was a 2 story blue house.

((close to the Octagon house which we lived by and the octagon house has 9 passageways for an underground railroad...maybe a passageway under our house?))

2007-09-15 11:23:51 · 3 answers · asked by Anonymous in Paranormal Phenomena

it says solve by elimination..

2007-09-15 11:22:55 · 7 answers · asked by Sam 1 in Mathematics

atoms are held together by magnitism.
mass is held together by gravity.
so wich ultimately holds everything together.

2007-09-15 11:16:37 · 11 answers · asked by ? 3 in Astronomy & Space

and whats a negative refraction

2007-09-15 11:15:55 · 6 answers · asked by C12H22O11 4 in Physics

Hi everyone, recently we have been getting loads of house/wolf spiders in our bathroom today alone we have found 7 in the bath and 2 on the walls .... do these little buggers live in packs? I know they move around about this time of year but why our bathroom?and any ideas how to control them my mum is scared to go in the bath...how long before she starts stinking!!!!!
any suggestions would be helpful cheers

2007-09-15 11:13:38 · 11 answers · asked by Rozzaxw1 2 in Biology

i need 10 physics related facts that has to do with superlens??

2007-09-15 11:13:18 · 1 answers · asked by C12H22O11 4 in Physics

2007-09-15 11:11:38 · 11 answers · asked by donjamste 1 in Chemistry

Just curious. My dog has them all the way back, I just have a few toward the front. What is the point of this? Why does my dog have more?

2007-09-15 11:07:37 · 1 answers · asked by Blearg 5 in Biology

I have a question on a homework question. All I need to know is this...

There is a box diveded into 4 squares. The top left box has an 'A' in it. The top left box has a 'B' in it. The bottom left box has a 'C' in it. And the bottom left box has a 'D' in it. Above the 'A' and 'B', it says, "Variable 1". Next to the 'A' and 'C' box, it says, "Variable 2" can you please explain it to me. I would really appriciate it.

Thanks!!!

2007-09-15 11:05:33 · 3 answers · asked by Anonymous in Mathematics

I understand that the speed increases per second per second until a maximum rate is reached - what are the logistics

2007-09-15 11:02:49 · 17 answers · asked by donjamste 1 in Physics

2007-09-15 11:02:07 · 3 answers · asked by you-know-who 1 in Earth Sciences & Geology

2007-09-15 11:00:54 · 2 answers · asked by C12H22O11 4 in Physics

2007-09-15 10:57:42 · 7 answers · asked by Anonymous in Weather

And if so, please cite references. I'm talking about physical science- not subjective "I just know I am" "proof". Like genetics, for example.

2007-09-15 10:57:42 · 9 answers · asked by Anonymous in Biology

2007-09-15 10:55:10 · 6 answers · asked by Dalila 1 in Mathematics

common denaminator for

a)3/10, 5/6,-3/4

b)1/8,14/15,4/7

c)1/6,14/5,13/28

d)7/15,23/20,5/6

and pls tell me how to do it, i know most of time, you multiply the numbers but sometimes the product is too high. can you guys give me some ideas how to find the commion factor?

thanks in advance

2007-09-15 10:54:56 · 6 answers · asked by Anonymous in Mathematics

what is the limit of (sqrt 2-T) - (sqrt 2)/T as T~>0.
Please Explain and show steps if needed.

2007-09-15 10:52:08 · 3 answers · asked by Pedro Q 3 in Mathematics

I have been employed as an intern in a mid sized company, working with 10 engineers. So far, I have been working on manuals, CAD drawings, and basically documentation of equipment awaiting release.

What tips do you have that can help me become more involved with design projects particularly, or any kind of general tips? Thx.

btw. this is a mechanical/electrical engineering position and I have finished my first year. I am working full time right now.

2007-09-15 10:52:07 · 3 answers · asked by Anonymous in Engineering