Science & Mathematics - 17 August 2007

2007-08-17 18:59:36 · 2 answers · asked by Anonymous in Chemistry

2007-08-17 18:48:08 · 14 answers · asked by Anonymous in Biology

because its a vaccuum is should suck all the air from your body which would cause your organs to collapse, but because there is no pressure in space, a sudden change from a pressurized environment should make you burst. Then if your in empty black space it would be so cold you should freeze instantly, if you were near a star there would be immense radation and heat...so many ways to die, what would kill you first? What else could/would happen to your body?

2007-08-17 18:41:26 · 14 answers · asked by Matthew H 2 in Astronomy & Space

Stands of aspen trees often are a series of genetically identical individuals, with each succeeding tree growing from the severed shoot of another tree. Using what you've learned of genetics in this chapter, would you expect one aspen tree in a stand to differ greatly from another in its phenotype? Would you expect each to look exactly like the next in terms of phenotype? Evaluate.

2007-08-17 18:40:53 · 7 answers · asked by alan82nd 1 in Biology

i am a gay, and i find my legs so maculine (the muscles are very prominent) and it embarass me when i wear skirts.... so could you plz help me with it? is there any medicine (pills perhaps)

2007-08-17 18:36:24 · 2 answers · asked by janna b 1 in Medicine

Hi, in my physics book (serway) they say "dimensions can be treated as algebraic quantities" but I don't understand this very well. If I sum meters I get meters, if I multiply meters I think I get meters^2 because the area of a rectangle is b.h. But if, for instance, I multiply seconds.seconds I don't uderstand why I get sec^2.

Algebraically x.x = x^2 but x represent a a number not time, weight, etc.

I see it like 3 apples x 2 apples = 6 apples^2.

Probably I'm getting this wrong, Could you help me to understand this right please?

Excuse me if my english isn't very clear.

2007-08-17 18:29:11 · 3 answers · asked by andacecha 2 in Physics

Steve starts out on his moped at the rate of 40 miles per hour. Two hours later, Bill drives along the same route at 55 miles per hour. In how many hours will Bill overtake Steve?

Is there paticular equation for this?

Thanks!

2007-08-17 18:24:32 · 10 answers · asked by phattylovesphood. 2 in Mathematics

On some of my pears on the pear tree, there is this odd growth on it. It's kinda of like dandelions I guess, I don't know how to describe it. Out of like 20 pears on the tree we picked today, we saw 2 pears that that were still on the branches that had this super weird white growth on it. It's fuzzy & white like dandelions, but super tiny like needles coz it's got a white fuzzy head & the bottom is thin like a needle stuck into the pear. Now if it was a patch of this weird fuzzy growth, I wouldn't be so freaked out, the weird thing about this is that, it's not a patch or a line of this weird growth that looks like white needles stuck to the pears, but it grows lined up in a perfect spiral shape about 1 inch wide...!!!!!!! These white fuzzy needles grow away out of the pears about a half inch off the surface of the pears...weird. Does anyone know what this could be??? Is my 15+yr pear tree infected with some weird disease or something? Or contaminated by an insect? Thanks!

2007-08-17 18:23:11 · 1 answers · asked by Starry-eyedGurl 1 in Botany

Can EMTs have facial hair?

2007-08-17 18:21:21 · 6 answers · asked by Anonymous in Medicine

Why is that burning coal can release more energy that just burning mere dry wood?

is it because hydrocarbons are formed only after exposure to heat, pressure and bacterial activities for millions of years?

What's the difference in the chemical composition of wood and coal?

Thanks!

2007-08-17 18:15:38 · 3 answers · asked by Anonymous in Chemistry

2. What will happen if an iron spoon is used to stir a 1M solution of aluminum chloride, AlCl3 (at 25 C)?

Thank you

2007-08-17 18:15:02 · 2 answers · asked by Ganbatteru 3 in Chemistry

From the USA Jupiter can be seen as a bright "star" to the south-southwest. Below it is a fairly bright, orangeish star. That's Antares. Take a look at the bottom of this website for a comparison of Antares to our own sun ==>

2007-08-17 18:14:33 · 3 answers · asked by Chug-a-Lug 7 in Astronomy & Space

Does anyone know where hurricane dean is going to hit? we live in Tx and were really hoping its not going to effect us.

2007-08-17 18:06:48 · 15 answers · asked by Jeff & Emily 3 in Weather

I found these on a trip to Cape Cod, Massachusetts. A man at the shore said they are periwinkles but I looked up periwinkles online and found several kinds and this looks different to me.

http://members.cox.net/natura/DSCN4771.JPG

.

2007-08-17 18:06:31 · 3 answers · asked by barbara m 3 in Zoology

I sometimes mix my Sensodyne toothpaste with a fluoride treatment that contains stable stannous fluoride. Can these two chemicals react with one another?

2007-08-17 18:06:05 · 2 answers · asked by Deltaman 2 in Chemistry

Vesel thermally insulated contain 2.1 kg H20 & 2.kgice. all at 0c the outlet of tube leading from a boiler in which water is boiling at atmospheric pressure is inserted into the water how many grams of steam must becondense inside the vessel to raise the teperature of the system to 34 dgree celcius. neglect the theat transferred to the container

2007-08-17 18:01:55 · 2 answers · asked by kuti boy 1 in Physics

2007-08-17 17:59:05 · 5 answers · asked by RR_MXLI 2 in Earth Sciences & Geology

2007-08-17 17:57:17 · 4 answers · asked by xyz 2 in Mathematics

2007-08-17 17:53:22 · 10 answers · asked by Brije B 1 in Mathematics

is there any difference between a telescope and an observatory??
please reply as soon as possible...it is urgent!

2007-08-17 17:50:21 · 8 answers · asked by Isha K. 2 in Astronomy & Space

A spherical balloon is expanding and its volume is increasing at the rate 288cm^3/s when the side is 6cm. Find the rate at which the:

a) side is increasing when the side is 6cm.

b) surface area is increasing when the side is 6cm.

v= 4/3 pie*r^3 A=4pie*r^2

2007-08-17 17:47:21 · 3 answers · asked by Anonymous in Mathematics

2007-08-17 17:43:33 · 8 answers · asked by alicia 1 in Astronomy & Space

there have been so many books published recently in the field of cosmology and quantum science etc., but none that I know of in the chaos field.

2007-08-17 17:43:25 · 2 answers · asked by sst307 1 in Physics

I've seen web vids of people using green lasers to pop balloons from a short distance. I've seen some 5mw, 532nm green laser pointers that run anywhere from $10-$20 on ebay. Would those be able to to do this? How close would I have to be to pop a balloon? Also, how does a 5mw differ from a 10 or a 15? Thanks.

2007-08-17 17:42:44 · 0 answers · asked by evilknightsword 1 in Physics

"Find the equation of the circle if the circle is tangent to the line x+2y=3 at the point (-1,2) and the circle is on the y-axis."

Another analytic geometry homework..I don't know what equation will use....

2007-08-17 17:39:33 · 2 answers · asked by trevor 1 in Mathematics

I know the formula of Newton's theory (and the basic principles of Einstein's more recent theory of relativity), but can someone help me to get my head around the main premise of what actually causes this force we call gravity? I am having a hard time conceptualizing it and understanding why it occurs...

2007-08-17 17:38:20 · 11 answers · asked by whitehorse456 5 in Physics

2007-08-17 17:36:56 · 1 answers · asked by itskristenx3 1 in Botany

2007-08-17 17:35:44 · 6 answers · asked by Scorpius59 7 in Geography

2007-08-17 17:33:18 · 12 answers · asked by Anonymous in Astronomy & Space

if the red sea looks alot like a gulf

2007-08-17 17:31:21 · 12 answers · asked by Anonymous in Geography