Science & Mathematics - 27 September 2007

what is the acual definition

2007-09-27 05:26:49 · 8 answers · asked by donswaheli 1 in Mathematics

Indicate whether the sentence or statement is A) true or B) false for 1-8.

1 atoms form bonds in such a way as to produce the electron configuration of noble gas.

2 cesium is an example of an element with a high electronegativity.

3 the shielding effect would be greater in an atom of chlorine than in an atom of fluorine.

4 conductivity in metals can be explained by what is called a sea of electrons.

5 all diatomic molecules are linear.

6 the maximum number of electrons in any p sublevel is six.

7 the maximum number of electrons in any f sublevel is 18.

8 in general, the closer an orbital is to the nucleus. the more energy an electron possesses.

9 which of the following orbitals is closes to the nucleus?
A. 1s B. 2p C. 4s D. 3d

10 compare the maximum number of electrons possible in sublevel 3d with the maximum number that could be in sublevel 4d.
A they are the same
B there are more in 3d
C there are more in 4d
D they are impossible to comare

2007-09-27 05:25:32 · 3 answers · asked by Anonymous in Chemistry

A sign is suspended from two chains AE and BF. Knowing that the tension in BF is 200 N, determine (a) the moment about A of the force exterted by chain B, (b) the smallest force applied at C which creates the same moment about A.

Diagram:
http://i236.photobucket.com/albums/ff35/bugmenot_07/6.jpg

2007-09-27 05:24:09 · 1 answers · asked by Tyrese B 1 in Physics

On a truly cosmic scale every point would be surrounded by an equal amount of mass in every direction, and so would be "pulled" equally by gravity in all directions. Would this cancel out so the net force on each point would be zero. This would seem to apply irrespective of the shape of the universe, or even if the universe was infinite.

Surely there must be something wrong with my reasoning since if it would preclude the possibility of a "Big Crunch" and I would like to know my error

2007-09-27 05:22:40 · 5 answers · asked by Anonymous in Astronomy & Space

2007-09-27 05:21:55 · 7 answers · asked by mimilog 2 in Mathematics

I am not looking for an answer to this problem, I was just wondering if anyone could tell me what method I would need to work it.

2007-09-27 05:21:09 · 4 answers · asked by Amanda D 3 in Mathematics

I'm in an Elementary Surveying Class, and last week we went over some stuff on surveying but I can't get this question using the notes I got so I'm gonna see if anyone our here can help me.

I was given 2 stations on a horizontal line. One station was called Sta 10+00, the other is Sta 17+46.32 how do you figure out the distance between? I was also given a manhole that is 112.43ft to the east of Sta 17+46.32 how do I figure out the station of the manhole?

2007-09-27 05:20:08 · 4 answers · asked by xXxSmartGuyxXx 3 in Engineering

What I'm trying to find out is the minimum amount of time it has taken for one species (it doesn't matter which) to evolve into another distinct species, possibly also how long on average it would take an individual member of that species to reproduce.

I am no expert on the subject of evolution and I may have incorrectly phrased the question. Please forgive me if this is the case and feel free to give whatever answer you can.

2007-09-27 05:15:48 · 3 answers · asked by Anonymous in Other - Science

2007-09-27 05:10:52 · 6 answers · asked by lethorian91 2 in Mathematics

site for online dictionary with physics terms?(romanian-english,english romanian)

2007-09-27 05:07:40 · 4 answers · asked by Anonymous in Physics

2007-09-27 05:07:12 · 4 answers · asked by laurenhall2006 1 in Physics

As science advances, intelligent life will be discovered. The SETI project will eventually prove it, and it could happen in just a few years. The search for planets on other stars first found one, then another, then hundreds. The same will happen in the search for extra-terrestial intelligent life.

2007-09-27 05:06:57 · 23 answers · asked by kimmyisahotbabe 5 in Astronomy & Space

2007-09-27 05:06:17 · 9 answers · asked by Jamaal H 2 in Earth Sciences & Geology

Differentiate the following function.

y=(3x^2+8x+2)/sqrt(x)

I am lost at this one. I am trying to use f(x-h)-f(x)/h to solve it but keep getting the incorrect answer. any help would be great. Thanks

2007-09-27 05:06:14 · 4 answers · asked by m_carl 1 in Mathematics

ok evolution blah blah, says a creature can live for millions of years and not change if there is no change to it's environment

This is the evolutionist argument for why the creationist's favourite fish the cealocanth looks exactly the same.

The question is, what happend to all the ancient men

astolopithicus forgive the spelling, erectus, habilius., and cro magnum

what major change happened to their environment

they lived in caves and jungles, we still have caves and jungles,

we still have plenty of caves and jungles no one has ever walked into

so how did they die out, seeing as their environments have been virtually untouched?

they survived the ice age and then decided to what exactly?

their enviroments have reamianed the same, they should still be around

and if disease killed them all off, then how did we get here, disease certainly didn't bother the cealocanth too much

natural disasters....something always survives...ask the cealocanth

suggestions please

2007-09-27 05:05:24 · 5 answers · asked by Anonymous in Biology

Two electric charges q1= -8.0 (micro) C and q2= +2.0 (micro) C are separated by 2.0 m. Determine the point( other then Infinity) at which the total electric field is zero.

Please show work

2007-09-27 05:04:29 · 1 answers · asked by mastersource2005 5 in Engineering

Why is that?

2007-09-27 05:04:07 · 7 answers · asked by Rachel J 1 in Zoology

I was building my Xenu shelter and came across petrified remains of what looks to be an ancient burial ground of small rodents (all under 3' in length) with huge ivory tusks(2.5" each) and wing remains. It looks like a sabortoothed bat, or a carnivorous flying gerbil-squirrel... I know they are not bats because of horns. It's like as if someone gave a chihuahua some Dracula teeth and glued some wings on it. Weird..

2007-09-27 05:02:31 · 8 answers · asked by Aquatic Rodent '") 2 in Zoology

I have box. the top has and area of 240 square inches, the side 300 squre inches and the end is 180 square inches what are the dimensions of the box

2007-09-27 04:58:35 · 6 answers · asked by --LEAFS 13-- 2 in Mathematics

the following is a chart but it needs to be on a graph to determine the answer i need the final answers i have no idea how to arrive at the final answer

I need
the Angular speed of star in degrees per hour
Length of day in hours


Time----------------Angle
O hours 00 minutes--------20.0 degrees
0 hour 30 min---------24.4 degrees
1 hour 00 min------28.2 degree
1 hour 30 min ------33.4 degree
2 hour 00 min--------37.5 degree
2 hour 30 min------41.8 degree
3 hour 00 min-------45.9 degree
3 hours 30 min-----49.5 degree
4 hours 00 min-----53.0 degree
4 hour 30 min--------57.8 degree
5 hour 00 min-------60 degree
5 hour 30 min-----65.3 degree
6 hours 00 min .....69.9 degree
6 hours 30 min----72.8 degree
7 hours 00 min------76.4 degree
7 hours 30 min-------81.6 degree
8 hours 00 min-------83.9 degrees

I NEED the answer...... i have been trying but keep getting the wrong answer... i need the final answer who ever gives the correct answer get 10 points

2007-09-27 04:57:28 · 2 answers · asked by investing1987 3 in Mathematics

2007-09-27 04:56:54 · 4 answers · asked by Ciavana 3 in Mathematics

Help me out quickly!!!

2007-09-27 04:54:42 · 2 answers · asked by Rachel J 1 in Zoology

2007-09-27 04:54:22 · 11 answers · asked by Anonymous in Zoology

2007-09-27 04:54:05 · 3 answers · asked by anantharaman k 1 in Astronomy & Space

Distinguish the following items:
(a) Hydrolysis of salts and electrolysis
(b) Acid strength and acid concentration
(c) Neutralization point and titration end point
This is my homework... But I don't know how to answer them... So anyone can help?

2007-09-27 04:49:53 · 1 answers · asked by Someone Secretly Hidden 1 in Chemistry

2007-09-27 04:49:05 · 5 answers · asked by i4unaidu 1 in Mathematics

what refers to all weather conditions in a givin location over a period of time

2007-09-27 04:47:10 · 5 answers · asked by Anonymous in Geography

I am in my 4th and final year in BSc Biomedical Science at Glasgow Caledonian University in Scotland and was wondering if I am required to do a year or so of work before I am a fully qualified Biomedical Scientist (MLSO)?

Any other information/advice about a career in this field would be appreciated.

2007-09-27 04:46:28 · 6 answers · asked by Euan S 3 in Biology

2007-09-27 04:46:13 · 2 answers · asked by Anonymous in Engineering

These questions are for fall arrest systems.
1. A 180LB man has a 10' rope tying him to a bolt in a wall. The man free falls for 10'. How much force (lbs) is applied to the bolt when he comes to a sudden stop?
2. Now, the last 3' of the 10' rope is set-up to decelerate the 180LB man. (Man free falls for 7' then decelerates for 3'). How much force (lbs) is applied to the bolt at 7' (point of deceleration) and at 10' (end of 3' deceleration)?

please post answers in Lbs.

2007-09-27 04:42:59 · 1 answers · asked by shaggz28 1 in Physics