Science & Mathematics - 31 January 2007

A man travels to work at a speed of 50 mph and returns home at 30 mph. What was the average speed during the round trip?

2007-01-31 04:05:51 · 10 answers · asked by Anonymous in Mathematics

2007-01-31 04:02:56 · 6 answers · asked by NASRA S 1 in Other - Science

2007-01-31 04:01:59 · 8 answers · asked by torirowe 2 in Chemistry

What constellation would be seen just above the horizon at sunrise 1 month later?

2007-01-31 04:00:39 · 1 answers · asked by Anonymous in Astronomy & Space

If you can help me with any of these, that would be great. Thanks.

During the fermentation process, why is it IMPOSSIBLE to get a soln with an Ethanol concentration of greater than 10-15% without using distillation?

Why is it possible to seperate and concentrate ethanol in the mixture during distillation?

WHY does alcohol turn into vinegar if it sits too long?

And why is ethanol dangerous or toxic to humans?

2007-01-31 04:00:33 · 2 answers · asked by Angel Eve 6 in Chemistry

All of the NOVA and other physics documentaries show the Big Bang happening "in" something -- 3D space. Was empty space already there for matter to expand in, or did space [the void] enter into existence with the Big Bang? When physicists say "the universe is expanding" to they mean only that the galaxies are moving away from each other or do they mean that the volume of the 3-D space that contains all matter is getting bigger?

2007-01-31 04:00:01 · 3 answers · asked by robot_pi 1 in Physics

2007-01-31 03:57:48 · 2 answers · asked by Anonymous in Astronomy & Space

if you decide to give detail on this era , feel free to do so. not many people will answer this question, so you have a better chance at recieving the 10 points.

2007-01-31 03:56:14 · 2 answers · asked by ipodlady231 7 in Earth Sciences & Geology

When I seached yahoo I only small pics

2007-01-31 03:55:47 · 8 answers · asked by emily_hope_92 1 in Astronomy & Space

Where in the brain are the PITUITARY GLANDS located?

2007-01-31 03:50:37 · 5 answers · asked by Munky 1 in Biology

2007-01-31 03:50:10 · 1 answers · asked by Anonymous in Earth Sciences & Geology

a. 5x^2+10x=9+5y^2
b. 5x^2-10x=0-5y^2
c. 5x^2+5x+y^2=9
d. 5x^2+10x+5y=9

2007-01-31 03:49:21 · 6 answers · asked by Anna 1 in Mathematics

2007-01-31 03:45:58 · 6 answers · asked by Kimmy D 1 in Chemistry

a. parabola
b. circle
c. ellipse
d. hyperbola

2007-01-31 03:44:07 · 2 answers · asked by Anna 1 in Mathematics

I am taking this class Data Analysis with SAS. I want to know if it is available for individual students. I want to download it on my laptop. any ideas about how much it costs? please share any valuable information regarding this SAS system/software. http://en.wikipedia.org/wiki/SAS_System

2007-01-31 03:42:56 · 4 answers · asked by binqasimm20 2 in Mathematics

Please use my ears as the basis for it. Some funny phrases about them would be good as well.

http://images5.theimagehosting.com/Upload10th.jpg

2007-01-31 03:40:09 · 7 answers · asked by Bob 1 in Zoology

i like to be a bird cause i can see everything from above.

2007-01-31 03:39:59 · 5 answers · asked by Baby Doll 3 in Zoology

rice crispies, cheerereos, or cocoa pebles

2007-01-31 03:37:47 · 4 answers · asked by guns n roses !!!!!!!!!!!!!!!!!!! 1 in Biology

2007-01-31 03:37:46 · 2 answers · asked by Tran 1 in Geography

how can i have my scolar ship what percentage i should have have it ??
my percentage is from 83%-70%
what should i do more help me please!!!!

2007-01-31 03:37:39 · 2 answers · asked by Fuck The System 1 in Astronomy & Space

a. y= 4(x-3)^2+3
b. x= 4y^2+2
c. y= 4(x+3)^2-2
d. x= 4(y+3)^2+2

2007-01-31 03:37:03 · 6 answers · asked by Anna 1 in Mathematics

COOHCL2 OR COOHCL4?

2007-01-31 03:36:45 · 14 answers · asked by Kimmy D 1 in Chemistry

when DC is used to excite a solenoid, the poles (north and south) can be found using end rule...
incase of solenoids excited by AC, how are the poles formed?
Do they change each other for every half-cycle of the input excitation AC? (i.e., north becomes south and south becomes north in every following cycle)

2007-01-31 03:35:58 · 4 answers · asked by haridravid 2 in Engineering

2007-01-31 03:34:28 · 4 answers · asked by paperboi 2 in Chemistry

A second type of proof in geometry is a proof by ____________________, or indirect proof.

2007-01-31 03:33:27 · 5 answers · asked by Rattiesrule 2 in Mathematics

I read an article recently where someone aragued that scietific stuff like genetic engineering and evoloution was morally wrong. I know these arguments have been going on for a long time but could I have some of your opinions please. I don't really know what to think.

2007-01-31 03:31:54 · 25 answers · asked by Princess 4 in Biology

a. (x-1)^2+(y+2)^2=16
b. (x+1)^2+(y-2)^2=16
c. (x+1)^2 /1 + (y-2)^2 /4=1
d. (x-1)^2 /4 + (y-1)^2 /4=1

2007-01-31 03:30:00 · 5 answers · asked by Anna 1 in Mathematics

2007-01-31 03:29:37 · 2 answers · asked by Paola 1 in Chemistry

2007-01-31 03:29:09 · 7 answers · asked by Anthony M 1 in Earth Sciences & Geology

2007-01-31 03:25:35 · 1 answers · asked by Paola 1 in Chemistry