Science & Mathematics - 22 November 2006

Find x,y,z, and w by the GAUSE- JORDAN method?
5x+3y+z+5w=-2
3x+2y+2z+4w=2
2x+4y+3z-3w=-11
4x-3y-2z+2w=-3

2006-11-22 19:52:05 · 2 answers · asked by che_karlos 2 in Mathematics

2006-11-22 19:49:10 · 12 answers · asked by Akilesh - Internet Undertaker 7 in Mathematics

2006-11-22 19:42:23 · 1 answers · asked by amazing_sweet_angel 1 in Chemistry

2006-11-22 19:40:39 · 5 answers · asked by somya g 1 in Mathematics

that can be made from teh a sheet of tin that is 24in by 24in by cutting equal squares from the corners and turning up the sides

2006-11-22 19:37:33 · 3 answers · asked by missy2589 2 in Mathematics

(x - y + 1)(x + y)

2006-11-22 19:36:35 · 4 answers · asked by Anonymous in Mathematics

2006-11-22 19:31:50 · 2 answers · asked by tsegisho 1 in Chemistry

2006-11-22 19:24:33 · 31 answers · asked by nanda 1 in Astronomy & Space

A college student decides to try bungee jumping. He attaches an elastic bungee cord to his ankles and jumps off a tall bridge across a river. He ends up barely touching the water before the cord jerks him back up.

Which assumptions are reasonable to make in this problem?

A. The student can be treated as a particle moving with constant speed.

B. The student can be treated as a particle moving with constant acceleration.

C. The student cannot be treated as a particle.

D. The air resistance is substantial.

E. The air resistance is negligible.

F. The amount of heat generated in the bungee cord is substantial.

G. The amount of heat generated in the bungee cord is negligible.

I. The bungee cord applies a constant (or zero) force on the student.

J. The bungee cord can be modeled as a spring that obeys Hooke's law.

And it can be multiple assumptions...thanks for the help as I can't seem to be getting a right answer.

2006-11-22 19:24:15 · 7 answers · asked by Kris 1 in Physics

please do not give me any answer i can search for myself on the internet. clever one

2006-11-22 19:22:28 · 3 answers · asked by jean marc l 6 in Geography

or name a few dogs closest to the wolf family

2006-11-22 19:22:14 · 16 answers · asked by Anonymous in Zoology

2006-11-22 19:19:05 · 13 answers · asked by seanandryanhayes 1 in Mathematics

2006-11-22 19:18:41 · 16 answers · asked by seanandryanhayes 1 in Mathematics

You can not hold a needle at 100 degree C, but you can put your finger easily at say 10 kg water at 40 degree C, though the later is having more heat energy. We know that steam at 100 degree C has more burning effect than water at 100 degree C, because it is having more energy (537 calorie/gm). How can you justify this phenomenon?

2006-11-22 19:17:52 · 7 answers · asked by badalde66 1 in Physics

2006-11-22 19:13:15 · 13 answers · asked by Anonymous in Astronomy & Space

2006-11-22 19:12:35 · 12 answers · asked by Anonymous in Astronomy & Space

2006-11-22 19:11:59 · 3 answers · asked by Anonymous in Astronomy & Space

how many ways can u make a 4x4 magic squares using the numbers 1-16?

2006-11-22 19:06:10 · 3 answers · asked by henree_yee 2 in Mathematics

2006-11-22 19:05:33 · 12 answers · asked by geetha m 1 in Weather

I keep messing up. Help would be greatly appreciated :)

(x³ + 4x²y + 2 xy² + 3y³) - (5xy² -2y³ + 6x²y)

2006-11-22 18:56:01 · 7 answers · asked by Sally 1 in Mathematics

I understand photon can't be at rest and experementally its value can't be found but theoritically speaking photon is a particle and rest mass is a form of energy called rest mass energy and energy possesed by photon is hv(new) so what will be its rest mass

2006-11-22 18:53:38 · 8 answers · asked by Chan V 1 in Physics

2006-11-22 18:52:26 · 2 answers · asked by wye_iz 1 in Astronomy & Space

2006-11-22 18:48:41 · 9 answers · asked by paddles 1 in Weather

2006-11-22 18:47:17 · 19 answers · asked by navratna s 1 in Mathematics

What is Newtons concept of escape velocity?

2006-11-22 18:44:26 · 8 answers · asked by Brenda M 1 in Physics

5x+3y+z+5w=-2
3x+2y+2z+4w=2
2x+4y+3z-3w=-11
4x-3y-2z+2w=-3

2006-11-22 18:41:18 · 2 answers · asked by che_karlos 2 in Mathematics

2006-11-22 18:40:11 · 4 answers · asked by Professor Armitage 7 in Zoology

2006-11-22 18:30:38 · 16 answers · asked by yahooanswers 3 in Chemistry

2006-11-22 18:29:19 · 2 answers · asked by Brenda M 1 in Chemistry

Help please

2006-11-22 18:28:11 · 5 answers · asked by mare0705 2 in Mathematics