Science & Mathematics - 18 July 2007

2007-07-18 06:59:49 · 9 answers · asked by james m 1 in Astronomy & Space

What mechanisims in space determine whether or not the body will be a star or planet? In other words, why do stars form instead of planets sometimes? Or why do planets form instead of stars?

Thanks

2007-07-18 06:49:32 · 2 answers · asked by thunderbomb90 3 in Astronomy & Space

2007-07-18 06:42:57 · 8 answers · asked by Cindy Z 1 in Engineering

Half Life?

2007-07-18 06:42:37 · 5 answers · asked by dr strangelove 6 in Chemistry

I need to know if the weight of a pebble would remain constant in air and in water. Thanks!

2007-07-18 06:41:13 · 11 answers · asked by Anonymous in Physics

2007-07-18 06:32:32 · 8 answers · asked by Otilia T 1 in Mathematics

2007-07-18 06:31:17 · 14 answers · asked by Don't Fear the Reaper 3 in Physics

2007-07-18 06:25:08 · 5 answers · asked by Fekar k1978 1 in Medicine

Seems that earthquake scientist have the information much closer to them ?

2007-07-18 06:14:39 · 4 answers · asked by james h 2 in Physics

Calculate the critical density of methyl alcohol from the following data:
ρ -------- d liq. (g/cc) ------ d vap. (g/cc)
13.57 ------ 0.6495 ----------- 0.01562
61.25 ------ 0.4675 ----------- 0.1003
The critical temperature is 240 C.

2007-07-18 06:09:09 · 3 answers · asked by g2hn 3 in Chemistry

2007-07-18 06:07:54 · 8 answers · asked by Anonymous in Astronomy & Space

I know It has been used in war time since Neapoleon. What I need to know is how it is used and Why ? And what it does to help the body etc.

2007-07-18 06:03:49 · 1 answers · asked by death 2 in Medicine

With which diodes can i realize the AND gate and the OR gate (like diodes 1N4007, 1N4148) and with which foemuls can I define the value of the resistors?

2007-07-18 06:02:05 · 1 answers · asked by Anonymous in Engineering

How would this affect the earth?

2007-07-18 06:01:18 · 6 answers · asked by T&M's Mom 2 in Astronomy & Space

Hi. I've tried to find the definitive average figure of the amount of CO2 sequestered by trees, however it seems impossible to find a reliable figure as the variables involved mean I keep getting different answers.

It all depends on the type of tree, where it grows, how healthy it is, how old it is, etc, ect. Therefore does anyone know of any formula or definitive answer that will actually tell me how much CO2 a healthy broadleaf tree in the UK (for example) will absorb from sapling to maturity (let's say 50 years) and each year thereafter??

PLEASE don't be random - I really do need to have a proper scientific answer to this Q for research I'm doing for my charity to challenge the carbon offsetting industry.

Thank you very much.

2007-07-18 05:57:35 · 4 answers · asked by Anonymous in Other - Science

Means how and why it blast ? By what action or reaction a blast take place?

2007-07-18 05:56:59 · 7 answers · asked by fha_chafzeto 2 in Physics

2007-07-18 05:56:06 · 5 answers · asked by Sanawar N 2 in Biology

if x >y (x,y +ve integers) then can we say log x > log y

kindly provide some logic/examples in support of your answer

thanks

2007-07-18 05:55:16 · 5 answers · asked by sanko 1 in Mathematics

For Biology I was asked to list 10 different bonding combinations including carbon. I'm supposed to list the bonding combinations name and chemical formula as well. I don't need you to come up with all 10 of the combinations or tell me the name and chemical formula if you don't feel like it, I just need some ideas. H2O was given as an example so I'm not allowed to use that combination. Thanks!

2007-07-18 05:55:05 · 4 answers · asked by Anonymous in Chemistry

I want to know about the nuclues, protons, nutrons etc.etc.
Is it just an imagination?
Detail if plz.

2007-07-18 05:53:41 · 9 answers · asked by fha_chafzeto 2 in Physics

The question:
What is the molarity of a solution when 9.65 g of CuCl2 is dissolved in 2525 mL of solution?

My answer:
0.15 mols CuCl2 / 2.525 L
I think I'm right, but I can't afford to be wrong.

2007-07-18 05:52:15 · 7 answers · asked by Anonymous in Chemistry

2007-07-18 05:50:29 · 4 answers · asked by Fekar k1978 1 in Medicine

2007-07-18 05:49:51 · 15 answers · asked by Calchas 3 in Biology

if you had a platform that was being held stable 100 miles up by a satilite in gyo sync with the earth way above the platform could you do a freefall to earth using a drouge chute to slow you down until you reached atmosphere to deploy your main, would you burn up or would you survive, keep in mind the platform is stable and not not moving

2007-07-18 05:48:55 · 9 answers · asked by Anonymous in Astronomy & Space

ok im curios about this, on june 1st between 6 30 and 8 00 in the evening i took a few pictures of the rising full moon and what struck me as odd about the moon was that it was shining red at first and then diminished to orange but during this change the intensity of light increased such that it started looking a bit like the sun, although not nearly as bight , but bright enough to be confused as the sun. is it posiible for a harvest moon to appear in the start of june in the northern hemisphere?

2007-07-18 05:48:49 · 2 answers · asked by Prady 2 in Astronomy & Space

I am not sure how to do this one either!!

2007-07-18 05:48:34 · 4 answers · asked by sunshine 1 in Mathematics

2007-07-18 05:46:40 · 5 answers · asked by Fekar k1978 1 in Medicine

At least how long is the rectangle?

2007-07-18 05:45:50 · 12 answers · asked by sheila t 1 in Mathematics

I have two functions (well, one and its inverse) and I have to find the intersection point:

y = 0.25 ( x - 4 ) ^ 2 +2
y = 2* sqrt (x-2) + 4

The answer is (6 + 2*sqrt(3), 6 + 2*sqrt(3))

Can someone show me how to get this answer? (I tried it, but it ends up being really complicated when it's not supposed to)

2007-07-18 05:45:14 · 5 answers · asked by cutest pooky 3 in Mathematics

2007-07-18 05:43:09 · 16 answers · asked by Anonymous in Chemistry