Science & Mathematics - 4 December 2007

1. the energy and position of an electron cannot be determined simultaneously
2. lower energy orbitals are filled with electrons before higher energy orbitals
3. when filling orbitals of equal energy, two electrons will occupy the same orbital before filling a new orbital
4. no two electrons can have the same four quantum number
5. All of these are incorrect

2007-12-04 03:59:34 · 4 answers · asked by wangchung32 1 in Chemistry

{x = -4y - 9
{-5x + 3y = -1

a. (1, -1)
b. (-2, -1)
c. (-1, -2)
d. no solution

2007-12-04 03:59:32 · 8 answers · asked by . 1 in Mathematics

2007-12-04 03:58:24 · 4 answers · asked by mikey 3 in Other - Alternative

I thought bee's did not come out at that temp.
(I have been attacked by those flying-stinging machines, so I keep clear and stay away).
Does anyone know when the little creature is gonna go back to his hive and let me go back outside to work? You know, the temp it has to be? thanks!

2007-12-04 03:54:51 · 10 answers · asked by Anonymous in Other - Science

2007-12-04 03:53:28 · 3 answers · asked by Bintou S 1 in Earth Sciences & Geology

A real estate agent is writing a listing for a triangular piece of land. She has to include the number of square feet for the property and has to calculate it from a plot that shows the following information: one corner of the plot is 128 feet south and 124 feet east from the upper vertex of the plot, the other corner is 20 feet south and 268 feet east from the upper vertex of the plot. Use matrices to find the area of the piece of land.

2007-12-04 03:52:22 · 3 answers · asked by Anonymous in Mathematics

5. Tornado Alley is a geographic region in the flat area of the plains. Tornadoes generate in this region because
A. lake-effect weather patterns cause unstable conditions in the atmosphere
B. the plains region is only affected by the warm front coming in from the south
C. the air in this region holds a significant amount of moisture, which causes the generation of tornadoes
D. there are no mountain regions to prevent the moist air from the Gulf of Mexico and the cold air from Canada from colliding causing unstable conditions in the atmosphere


6. What type of energy is responsible for lake-effect snow?
A. Mechanical
B. Electrical
C. Thermal
D. Nuclear

2007-12-04 03:52:03 · 1 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-04 03:49:43 · 10 answers · asked by REMY L 1 in Mathematics

They might be very careful not to give away that they have time-traveled.

2007-12-04 03:45:26 · 5 answers · asked by Akilesh - Internet Undertaker 7 in Physics

2007-12-04 03:43:07 · 4 answers · asked by Anonymous in Astronomy & Space

1. Given a small department with 7 members, how many subsets of the department (containing at least one person) could be created to work on any given project?

2. A small furniture maker allows customers to choose from 3 different finishes (light, medium and dark), 4 different woods (teak, birch, pine and oak) and 6 different styles of hardware to customize an entertainment center. Given these possibilities, how many different entertainment centers can be created?

2007-12-04 03:40:43 · 9 answers · asked by Nicole 4 in Mathematics

One acre of corn grown in Iowa with no fertilizer was compare with another acre of corn grown in California using a new experimental fertilizer. The total production of corn was measured for each field. What is wrong with this experimental design?

2007-12-04 03:40:04 · 7 answers · asked by Anonymous in Biology

What makes your voice change when you suck in helium from ballons?

2007-12-04 03:37:41 · 5 answers · asked by apocalypse66613 2 in Chemistry

What are atoms are they in us or wat.

if I release the energy in me will I explode

2007-12-04 03:36:16 · 6 answers · asked by o0♥0o 1 in Physics

2007-12-04 03:36:13 · 6 answers · asked by Deborah J 1 in Engineering

ive got three questions and do not understand them do you know the answers 1. the bid $100 and increases 50% evry minute in how many minutes will the bid go over $2,500

2.sharon uses her initials, SLF, for her password. How many different three-letter passwords can she make with these letters

3.3. In how many ways can you make 45¢ in change using only nickels, dimes, and quarters.

2007-12-04 03:36:11 · 3 answers · asked by John M 2 in Mathematics

2007-12-04 03:32:02 · 10 answers · asked by Anonymous in Physics

2007-12-04 03:32:00 · 1 answers · asked by jackid345 1 in Chemistry

1-cos^2x + cot^2x-cos^2x(cot^2x)= 1

2007-12-04 03:28:56 · 2 answers · asked by Anonymous in Mathematics

This may sound like a silly question, but I can't understand why some countries don't have the 4 seasons,when the earth spins on an axis wouldnt each country get the same length of exposure to the sun?

2007-12-04 03:28:17 · 7 answers · asked by Anonymous in Weather

(pacific,atlantic... ect)
is what the location means.
thanks very much!

2007-12-04 03:26:24 · 4 answers · asked by becca 3 in Geography

Has to do with Shielded Metal Arc Welding.

2007-12-04 03:25:25 · 4 answers · asked by weedly76 2 in Engineering

Most Americans believe NASA never even went to the bloody moon anyway

2007-12-04 03:25:09 · 16 answers · asked by Anonymous in Astronomy & Space

Suppose there is a right isosceles triangular wedge with the hypotenuse replaced by 1/4th the circumference of a circle of radius R.
l
l l
l l l
l l l l l
Now there is a block of mass M that we release from its top. How do u find the time in which it comes down i.e a height of R(wedge is fixed).

2007-12-04 03:24:56 · 3 answers · asked by outofthisworld 2 in Physics

2007-12-04 03:23:03 · 7 answers · asked by Anonymous in Chemistry

2007-12-04 03:19:12 · 3 answers · asked by Anonymous in Chemistry

what are the four parts of a paradigm shift? explain them please?

2007-12-04 03:17:14 · 1 answers · asked by Booker T "Right There" 5 in Engineering

m - 8/m + 7 * 1/m^2 - 7m - 8

2007-12-04 03:15:40 · 3 answers · asked by Anonymous in Mathematics

2007-12-04 03:14:18 · 4 answers · asked by Anonymous in Astronomy & Space

2007-12-04 03:11:38 · 2 answers · asked by Anonymous in Engineering