Science & Mathematics - 5 November 2007

I'm looking for a formula to calculate pressure in a closed vial, if I heat 5ml of DI water at 160°C, what will be the pressure in it? Will it be stable if I keep de temperature stable for long periode time?

Thank you everyone

2007-11-05 02:00:58 · 2 answers · asked by Soulnette 1 in Chemistry

Also, how many people die from tsunamis each year?

2007-11-05 02:00:39 · 4 answers · asked by eagles12winning 2 in Earth Sciences & Geology

A. Falt plains
B. Mountain valleys
C. Moutain bases
D. Lowland Hills

2007-11-05 01:45:27 · 5 answers · asked by Anonymous in Earth Sciences & Geology

A. A 50-kilmeters-per-hour wind bkowing for 5 hours across a 100-kilmeter-wide area if ocean
B. A50-kilmeter-per-wide blowing for 10 hours across a 1000-kilmeter-widearea of ocean
C. A 100-kilmeter-per-hour wind blowing for 5 hours across a 100-kilmeter-wide area if ocean
D. A 100-kilmeter-per-hour wind blowing foe 10 hours across a 1000-kilmeter-wide area of ocean

2007-11-05 01:43:16 · 6 answers · asked by Anonymous in Earth Sciences & Geology

This is not for a grade, this for my job. I'm testing the content at my company website,since students are saying there answers are being marked wrong when they're correct. Thanks I appreciate it.


A cable is to be run from a power plant on one side of a river 2,400 meters wide to
a factory on the other side, 2,600 meters downstream. The cost of running the cable
under the water is $55 per meter, while the cost over land is $44 per meter. What is
the most economical route over which to run the cable? Round your answer to the
nearest integer.

2007-11-05 01:36:01 · 9 answers · asked by Anonymous in Mathematics

i would realy like to know who named other planets such as pluto,mars,venus,etc.etc. thank you tom n.

2007-11-05 01:34:54 · 7 answers · asked by Thomas N 1 in Astronomy & Space

2007-11-05 01:34:45 · 1 answers · asked by IbeME 1 in Chemistry

1) Why in math do we replace the cross product between radius and Force to
calculate Torque, with the sine function? Why can't we use cosine instead?

2007-11-05 01:32:57 · 1 answers · asked by Anonymous in Physics

http://news.aol.com/story/_a/nasa-to-search-files-on-ufo-incident/20071027082109990001?ncid=NWS00010000000001

WASHINGTON (Oct. 27) - NASA has agreed to search its archives once again for documents on a 1965 UFO incident in Pennsylvania, a step the space agency fought in federal court. The government has refused to open its files about what, if anything, moved across the sky and crashed in the woods near Kecksburg, Pa., 40 miles southeast of Pittsburgh.

Traffic was tied up in the area as curiosity seekers drove to the area, only to be kept away from the crash site by soldiers.

The Air Force's explanation for the unidentified flying object: a meteor or meteors.

"They could not find anything," one Air Force memo stated after a late-night search on Dec. 9, 1965. Several NASA employees also were reported to have been at the scene.
40 minutes ago - 3 days left to answer.
Additional Details
35 minutes ago

Eyewitnesses said a flatbed truck drove away a large object shaped like an acorn and about the size of a Volkswagen bus. A mock-up based on the descriptions of local residents sits behind the Kecksburg Volunteer Fire Department.

UFO enthusiasts refused to let the matter die and journalist Leslie Kean of New York City sued NASA four years ago for information.

"This is about the public's right to know," Kean said. "We would be doing this lawsuit regardless of whether UFO groups were interested in it or not. It's a freeodm of information issue."

The agency has turned over several stacks of documents which Kean says are not responsive to the request, an argument that U.S. District Judge Emmet Sullivan agreed with.

In March, Sullivan rejected NASA's request to throw the case out of court, resulting in negotiations that led to the agency promising last week that it will conduct a more comprehensive search.
35 minutes ago

Kean said Friday that she sued NASA rather than the Army because the space agency a decade ago released some relevant documents on the case.

2007-11-05 01:32:42 · 5 answers · asked by Anonymous in Astronomy & Space

I think there is compelling evidence for and against.

www.thebigones.co.uk

2007-11-05 01:31:37 · 16 answers · asked by thebigones2007 1 in Paranormal Phenomena

I don't need the full solution, just give me some hints as much as posible, and can someone tell me how this question is related to conservative vector field? in the following part, j is always a subscript, sum(wj,j=1..n) means to calculate the sum of wj from j=1 to j=n, I hope this writing style can be understood cos no way to type the math notation here.

Consider a closed polygon with vertices,v1,v2,...,vn,vn+1=v1, arranged in the positive direction and let v be a point inside the polygon. Show that
v=(sum(wjvj,j=1..n)/(sum(wj,j=1..n))
where wj=tan( (alpha(j-1))/2 + tan(alpha(j)/2) / modulusof(vj-v),j=1,2,...n and alpha(j) is the angle with |alpha(j)|

2007-11-05 01:30:37 · 3 answers · asked by Ö¿ ³ 1 in Mathematics

2007-11-05 01:30:23 · 15 answers · asked by Anonymous in Astronomy & Space

2007-11-05 01:30:20 · 1 answers · asked by Anonymous in Chemistry

Who knows a general penetration formula for projectiles?

2007-11-05 01:29:42 · 1 answers · asked by Anonymous in Physics

Without reducing the dosage or discontinuing the treatment. Also, what will happen to me if my liver enzymes were to raise for the whole course of treatment (6 months)? The levels were high but still acceptable (like about 120).

2007-11-05 01:28:53 · 2 answers · asked by numero uno 2 in Medicine

And how is it connected to teleportation?

2007-11-05 01:26:41 · 8 answers · asked by Anonymous in Astronomy & Space

2007-11-05 01:22:18 · 11 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-05 01:13:05 · 2 answers · asked by Anonymous in Chemistry

when 2-methyl-2-butanol is dehydrated using sulfuric acid it forms 2-methyl-1-butene and 2-methyl-2-butene. Based on how many protons can be abstracted, the ratio should be 1:3 but i actually calculated it to be about 1:7, why is that?

2007-11-05 01:03:32 · 2 answers · asked by ? 4 in Chemistry

I got the biological/physical sciences parts pretty much down solid. This stuff is easier to learn, since it is mostly text-book.

But I do really horrible on the verbal. Can anyone give me some tips or pointers??Thank you!!!!!!

2007-11-05 01:03:31 · 5 answers · asked by Anonymous in Medicine

PLZZZZZZZ I NEED IT RIGHT NOW

2007-11-05 01:02:41 · 5 answers · asked by Anonymous in Geography

[(c2 - 11c + 30)/(c3 + 6c2 + 9c)] · [(c2 - 3c)/(c2 - 25)] ÷ [(c2 - 9)/(c2 - 9c + 8)]

2007-11-05 01:01:25 · 3 answers · asked by AsanaR.W 1 in Mathematics

2007-11-05 01:00:01 · 3 answers · asked by Jeremy T 1 in Biology

volume ratio please, how thich would be the slurry thing over the slide be?
is it preferable to have the coating thick or thin?

2007-11-05 00:58:56 · 1 answers · asked by oozed neon 2 in Chemistry

and do they still sell them

2007-11-05 00:51:49 · 2 answers · asked by Anonymous in Medicine

x = -6
x + y = 0

a) 6
b)2.5
c) 0
d)infinite number of solutions

2007-11-05 00:46:12 · 2 answers · asked by Anonymous in Mathematics

Heya. I am doing my chemistry coursework on the reaction between potassium permangate and oxalic acid - and i am looking at the difference that changing the concentrations of the oxalate ions and manganate (vii) ions will have to the reaction, and also changing the temperature of the reaction, and the catalysts in the reaction. I have found out that it is a autocatalytic reaction, but i dont know what the catalyst is? is it the carbon dioxide or not? please can someone help me becuase i am going out of my mind with worry!!

what concentrations do i need to try for the oxalate and the pott perm? and what temperature range should i use - and how do i change the temperature(seeing as i am doing a titration?!)

thankyou so much guys..

Sami xoxox

p.s. i also need to be able to work out the rate of reaction using a calibration curve.. if anyone wants to be so kind as to help me.. drop me a message!

2007-11-05 00:46:00 · 2 answers · asked by toptoxgal 2 in Chemistry

2007-11-05 00:43:30 · 1 answers · asked by chloe 1 in Engineering

3y - 2x =3
y = x

a) (2,3)
b) (3,3)
c) (3,4)
d) (3,2)

2007-11-05 00:33:37 · 4 answers · asked by Anonymous in Mathematics

2007-11-05 00:32:27 · 2 answers · asked by Tray 1 in Astronomy & Space