Science & Mathematics - 17 October 2007

"electrons added to atomic orbitals of the same energy will remain unpaired with parallel spins until the subshell is more than half-filled". Which principle says that?

2007-10-17 18:12:05 · 2 answers · asked by dbm87 2 in Chemistry

Find the domain D for the function y=f(x). And Please write answer in interval notation.

2007-10-17 18:10:25 · 2 answers · asked by Anonymous in Mathematics

2007-10-17 18:09:36 · 1 answers · asked by damigurl05 1 in Biology

how can i find it to solve a problem im doing on differentials?

2007-10-17 18:07:29 · 10 answers · asked by sportzblock 1 in Mathematics

2007-10-17 18:06:06 · 5 answers · asked by Chris 619 1 in Engineering

Find the missing number? 19, 18, 16, 13, ____?

2007-10-17 18:04:56 · 25 answers · asked by acuraboy1978 2 in Mathematics

I need to figure this out.
1. What is the percentage of error?
Measured versus calculated
Error formula = (calculated – measured/calculated x 100
For example (3.45 ohms - 3.127/3.45) x 100 = 9.36 %

2007-10-17 18:04:25 · 3 answers · asked by Anonymous in Engineering

http://www.wickedlasers.com/lasers/CORE-67-3.html
http://www.dealextreme.com/details.dx/sku.91

The first one is from Wicked and the other one is from DealExtreme. Which one would you buy?

2007-10-17 18:03:21 · 4 answers · asked by Yoongie 1 in Astronomy & Space

The Nasa Lunar And Planetary Institute Photos of Apollo 15 Does Show An Alien Object

2007-10-17 17:53:15 · 13 answers · asked by engelfeurs 2 in Astronomy & Space

i'm an engineering student and the topic we're discussing in analytic geometry right now is about family of lines..but i don't understand how we are going to get the other member of the family of lines when the only given is the slope.oh geez!!i have been surfing the net but i've seen nothing 'bout that topic..yeah, it includes the parameter but we're not in vectors yet.please help!!if you have ideas about what i'm saying, share it please...thanks!!

2007-10-17 17:51:59 · 2 answers · asked by Anonymous in Engineering

a wire is strung between a building and the ground, making a 30-60-90 triangle as shown. the wire is attached to the ground 14 feet from the building. how far up the side of the building is the wire attached?

2007-10-17 17:38:47 · 6 answers · asked by Anonymous in Physics

Now a days Earthquake comming offten and also Tsunami alos following.What is the Relation between Earthquake & Tsunami

2007-10-17 17:37:24 · 7 answers · asked by Anonymous in Earth Sciences & Geology

need steps explained

2007-10-17 17:36:01 · 12 answers · asked by Anonymous in Mathematics

a. single bonds replace all double bonds that are present in the monomer
b. water is often produced
c. alcohol groups are formed
d. an aldehyde group is changed to a ketone group..
which one is it?

2007-10-17 17:34:13 · 3 answers · asked by Anonymous in Chemistry

Is it possible to inject vaccines of certain diseases into embryos, so that when the baby is born it is already immune these certain diseases, such as the chicken pox?

2007-10-17 17:32:04 · 4 answers · asked by monster808 2 in Medicine

According to the van der waals dispersion forces, the larger the atomic size, the more electrons are there and the chances of dipole happening increases and therefore the intermolecular force increases. But why does the melting point decreases down Group 1 even though the atomic size increases?

2007-10-17 17:30:33 · 3 answers · asked by DeepNight 5 in Chemistry

I'm working on something for my calculus class, and I need to figure out which mathematician derived the derivative of sin of x, to equal cos x.

d/dx sin x = cos x

I need the answers by tomorrow night, I tried looking everywhere online, but no such luck.

Thanks in advance!

2007-10-17 17:30:09 · 1 answers · asked by Anokhi P 1 in Mathematics

Also, 516 is 7% of what number?

2007-10-17 17:27:29 · 9 answers · asked by Automated Smiles 1 in Mathematics

My friend has this freeky vidio on her my space where, Three people are driving around in a car at night ant the guy in back is recording them,then they see a girl standing by the road with a dress on and blond hair,,they pull over and pick her up,she gets in the back with the guy thats recording and really says nothing exept her name[Teresa]and really dosent look in the camera much.They get down the road then she says to everyone"See that spot right there,thats where we had our accident and I DIED".Then you heard screaming ang the car flipped and flipped and the investagators coudnt explain it.The 2 in the front died and they never found the hitchhiker,,but their was a girl named Teresa that died in that same spot 2 years earlier,,,,,TRIPPY HUH.Im sure that explanation sucked but anyway what do you think about it?By the way I dont think I would ever pick up strangers,,you never know?????What do you think????

2007-10-17 17:23:30 · 9 answers · asked by heather 2 in Paranormal Phenomena

2007-10-17 17:21:08 · 5 answers · asked by Jack K 2 in Earth Sciences & Geology

I was wondering if you guys would know any useful references that could help me with writing left-handed. I do everything left-handed except for writing, and I see it as a kind of challenge right now. It should make sense right? I do every thing left-handed EXCEPT writing.

2007-10-17 17:20:59 · 2 answers · asked by Tom 1 in Zoology

Let P be the point (1, 3, 7). If the point (4, 0, -6) is the midpoint of line segement connecting P and Q, what is Q?

I know that v= (x2-x1, y2 - y1, z2 - z1)

What now?

2007-10-17 17:17:52 · 2 answers · asked by Anonymous in Mathematics

when you throw a ball in the air,the earth exerts a force on the ball and the ball exerts a force on the _____.

2007-10-17 17:14:43 · 3 answers · asked by Rose 1 in Physics

Okay, if you're up id like to know....

1.What degree must I attain to become a paleontologist?
2. How long does the degree take to achieve?
3. What kind of jobs are open nowadays in this field?
3. Any other pros or cons to being a paleontologist?

2007-10-17 17:09:24 · 3 answers · asked by Anonymous in Earth Sciences & Geology

A street is at an inclination of 38 degrees with respect to the horizontal. a wooden crate has a mass of 25 kg and is placed on this street. a force of 59 N must be applied to crate perpendicular to the pavement in order to hold crate. coefficient of static friction between crate and pavement is 0.599. what's the magnitude of the frictional force?

HELP! haha...

2007-10-17 17:06:37 · 1 answers · asked by Ella 2 in Physics

Cart 1 is at rest initially, and has a spring bumper with a force constant of 610 N/m . Cart 2 has a flat metal surface for a bumper, and moves toward the bumper of the stationary cart with an initial speed = 0.68m/s . Assume that positive -axis is directed toward the direction of motion of cart 2.
a.) How much energy is stored in the spring bumper when the carts have the same speed?
b.) What is the final speed of the cart 1 after the collision?
c.) What is the final speed of the cart 2 after the collision?

2007-10-17 17:04:59 · 1 answers · asked by Nik 1 in Physics

2007-10-17 17:00:26 · 6 answers · asked by wal_gil50 1 in Mathematics

2007-10-17 16:57:59 · 20 answers · asked by Anonymous in Physics

does anyone know any info on camel spiders? i know ther huge so saying doesnt rly help. thanx!

2007-10-17 16:54:40 · 3 answers · asked by Tina 4 in Zoology

2007-10-17 16:51:48 · 4 answers · asked by Lostwithchem 1 in Chemistry