Science & Mathematics - 16 July 2007

SELECT ONE YOU REMEMBER FROM THE 1990s
Andrew
Opal
Fran
Floyd
Select one you remember from Today:
Katrina
Rita
Wilma

2007-07-16 13:35:13 · 2 answers · asked by novapri39 2 in Weather

find the products. simplify if possible
1.
(√(5) + 4) (√(5) - 2)

2.
(5√(2) -1)^2

2007-07-16 13:30:21 · 2 answers · asked by Anonymous in Mathematics

i have been trying to figure out how they came to life.

2007-07-16 13:25:35 · 17 answers · asked by xGoldScorpionx 5 in Earth Sciences & Geology

Yes you can add the worlds of Star Wars, Star Trek too.
Mine would be Coruscant from Star Wars.

2007-07-16 13:23:44 · 15 answers · asked by Anonymous in Astronomy & Space

I live in Denver which is at elevation 5280 ft.
Sea level barometer normal is 29.92 " Hg (14.7 psi).
Denver barometer normal is 24.76" Hg (12.16 psi).
Internal combustion engines generate only 83% of the HP of an engine at sea level, and it takes several days for visitors to get acclimatized to the thinner air here if visiting from a lower elevation.
Several days ago I was filling my gas tank, and at the pump next to me was an RV. The RV owner said he was having trouble with the thinner air here, was short of breath, and wondered how long it took to get used to the altitude.
Out of curiosity, when I got home, I checked the barometric pressure via Weather Underground and it listed it at 30.11 " Hg (better than sea level normal), which we get quite often.
So my question is, why should the RV owner been short of breath?Wouldn't air at that Pressure have the same amount of O2 as at sea level?

2007-07-16 13:22:40 · 2 answers · asked by gatorbait 7 in Engineering

2007-07-16 13:21:22 · 3 answers · asked by Ryan A 1 in Mathematics

Can you tell me how to make a robot.Even the simplest.I just need to know the material and indtructions.Thanks.

2007-07-16 13:21:02 · 2 answers · asked by Anonymous in Engineering

Is the √3 (√(3) +x) = x√(3) + 3? or is it something else?

2007-07-16 13:17:34 · 2 answers · asked by Anonymous in Mathematics

While it may seem like a long shot right now, we know that NASA is planning to be on Mars by 2020 with the idea of setting up permanent bases on both our moon, Luna, and Mars itself. The Science Channel was making claims that they were going to try "dirtying" up the atmosphere, to create a stronger atmosphere, that could eventually lead to the ability to stay on Mars without an artificial source of oxygen.

Anyways...is anyone as hopeful as I am? I would give anything to be a part of the waves of civilians that make the trip for work or for leisure. I am going to school to be an anesthesiologist and hope that maybe...just maybe one day my skills might be necessary on Mars or anywhere else in space.

2007-07-16 13:17:26 · 7 answers · asked by Anonymous in Astronomy & Space

2007-07-16 13:15:22 · 1 answers · asked by zebbie g 2 in Zoology

2007-07-16 13:15:03 · 4 answers · asked by Anonymous in Mathematics

sixty-two and one half percent of a number is 40. What is the reciprocal of that number?

Twenty-four percent of a towns population owns cars. If the number of cars owned is 6,000 what is the population of the town?

The smallest number into which the number 2,3,5, and 7 can be divided without living a remainder is?
a 60 b 90 c 200 d 210

2007-07-16 13:14:08 · 7 answers · asked by Anonymous in Mathematics

2007-07-16 13:13:32 · 12 answers · asked by Doug 1 in Astronomy & Space

I am doing a project about rocks. I need a really good rock website that has different pix of rocks and the type that they r!! Please help me find a good site! THNX!!

2007-07-16 13:10:14 · 5 answers · asked by Anonymous in Earth Sciences & Geology

How would you calculate this ratio?
3.612 x 10 (to the 14th power): 39.0 x 10 squared
Anyone who could help out would be wonderful!

2007-07-16 13:08:17 · 4 answers · asked by katecamellia 1 in Mathematics

Are most spiders harmless?

2007-07-16 13:04:10 · 21 answers · asked by Ask Mike 4 in Zoology

I love sharks,thats why i'm asking for web sites that I can participate in without paying money?

2007-07-16 13:00:52 · 2 answers · asked by curious 2 in Zoology

How to find a Fourier transform of periodic Impulse?

Hint : use Fourier Series
delta T = sigma of (delta (t-nT)
or its exponential form
..............t₂
Cn=1/T∫ δ(t - n·Τ) · exp(-i·n·ω·t) dt
..............t₁

2007-07-16 12:58:33 · 1 answers · asked by 037 G 6 in Mathematics

I have a moped from china,and all the masurements are in Liters.I need pin ts.quarts, gal.
Phil

2007-07-16 12:58:03 · 2 answers · asked by Anonymous in Mathematics

For Example:
The double integral of xy^2dxdy
E={x,y| 2<_y<_0, 0<_x<_-sqt(1-(y-1)^2)
Any ideas?

2007-07-16 12:52:04 · 1 answers · asked by Anonymous in Mathematics

Is it still 1000kg/m^3?

How much gravity are there on the Moon??

2007-07-16 12:51:23 · 14 answers · asked by Anonymous in Astronomy & Space

Calculus question: Solving for absolute minimum and absolute maximum?
For the value of f(x) = x/(x^2 +1) on the given interval [0,2]

f'(x) = (x^2 + 1 - 2x^2) / (x^2 + 1)^2

did I find the derivative correctly??? and now what do I do to set it to zero. I am totally confused !!! HELP!! Thanks




Could you show me how to solve for the +/- 1 by eliminating the denominator. Once I have that I can solve for the min. and max. ...it's the algebra that driving me crazy!!! Thanks!!

2007-07-16 12:49:39 · 3 answers · asked by Anonymous in Mathematics

2007-07-16 12:48:01 · 9 answers · asked by Cleveo7 1 in Astronomy & Space

first second of creation of planet earth is the last second of creation of planet earth,the planet earth's second is still creating planet earth,that is what all should accept,our planet is still making itself,we will evolve when the planet creates its next level,then we can be new level humans and the other species will be their new level too.

2007-07-16 12:42:03 · 15 answers · asked by 197507261830approx: 1 in Astronomy & Space

When i was younger I saw an experiment on Mr wizards world(My idol, recently passed) where he took aluminum foil, placed it in a pot of I think it was sodium bicarbonate dissolved in hot water on a stove. He used a tarnished spoon and touched it to the Al foil and the tarnish dissappeared. Ithink this is how it went but Im not sure. It has been many years. Does anyone know or remember???

2007-07-16 12:40:36 · 2 answers · asked by scott k 4 in Chemistry

When they say something like "the temperature could be minus 10 degrees Fahrenheit "

do they mean 10 degree's below 0, or 10 degrees below 32F ?

2007-07-16 12:38:47 · 7 answers · asked by How To Save A Life 2 in Weather

m+2/5=1/2

2007-07-16 12:37:16 · 10 answers · asked by Lindsay 3 in Mathematics

physics - kinetic energy

A bicycle and a rider together have a mass of 7.40 slugs. If the kinetic energy is 742 ft lb, find the velocity (ft/s).



I've been trying to do this problem all day!! And I still can't get the right answer!!

2007-07-16 12:37:14 · 2 answers · asked by Anonymous in Physics

2007-07-16 12:35:57 · 8 answers · asked by Anonymous in Geography

2007-07-16 12:35:48 · 3 answers · asked by Anonymous in Earth Sciences & Geology