Science & Mathematics - 1 December 2006

2006-12-01 04:59:46 · 13 answers · asked by Babs 2 in Weather

2006-12-01 04:59:19 · 8 answers · asked by Anonymous in Physics

2006-12-01 04:58:57 · 5 answers · asked by jmccoy2 1 in Mathematics

different kinds of electromechanical products and treir manufaturig,design

2006-12-01 04:58:12 · 1 answers · asked by divine m 1 in Engineering

What's the difference between a Lion and a Tiger besides Tiger's stripes? Anything? I've heard they crossbreed them sometimes. If a Lion and a Tiger got into a fight who would win?

2006-12-01 04:57:10 · 5 answers · asked by Portia 2 in Zoology

I know that quasars are one of the fartheset things we can see in space (10-13 billion light years away). So with that logic they are also some of the youngest things in the Unvierse. Does this mean this is how galaxies get their start?

2006-12-01 04:56:12 · 3 answers · asked by Prince Auggie 2 in Physics

Zooplankton copepod species including calanoid cyclopoid and hapacticoid

2006-12-01 04:55:23 · 2 answers · asked by Anonymous in Zoology

I only need 4 more comparisons. I have looked everywhere and I can't find anything that makes sense to me, so I would appreciate it if you made your entries as simple as possible!

2006-12-01 04:54:23 · 2 answers · asked by 000123 2 in Biology

2006-12-01 04:54:20 · 10 answers · asked by zlyon12 1 in Earth Sciences & Geology

2006-12-01 04:53:19 · 8 answers · asked by Anonymous in Mathematics

2006-12-01 04:51:40 · 4 answers · asked by 9929 3 in Biology

the FeSCN 2+ in an equilibrium mixture. Explain....

Add / Increases FeSCN2+ / Decreases FeSCN2+/ Reason
Fe3+
Heat
Cl-
Cooling

2006-12-01 04:50:03 · 2 answers · asked by chemistrymagic 1 in Chemistry

my sister has 171cm and wants to know how does it measure in feet and inches ......:)

2006-12-01 04:48:28 · 5 answers · asked by Ello E 1 in Mathematics

I have read and watched many reports on global warming and wonder if the experts calculations are wrong. I have heard that; in 30 years there will be no skiing, 10+ years winters will be scarce, 40+ years there will be serious oceanic changes. Is it me or are these things really happening now. It seems that when a time is given to certain events, they occur much sooner. I think that what the experts are predicting will happen 10 years from now, will really happen in 4 to 5 years or less.

2006-12-01 04:48:05 · 7 answers · asked by Anonymous in Weather

Is DNA made of proteins? If so, then how come at 55 degrees celsius protiens denature whereas the DNA does not?

plez give me easy to understand answers as possible for im in only 9th grade and have not gone to college.

thanks for your answers

2006-12-01 04:47:36 · 3 answers · asked by aretmis097 1 in Biology

The emission spectrum of hydrogen consists of several series of sharp emission lines in the ultraviolet (Lyman series) in the visible (Balmer series) and in the infrared (Paschen series, Brackett series, etc.) regions of the spectrum.


(a) What feature of the electronic energies of the hydrogen atom explains why the emission spectrum consists of discrete wavelength rather than a continuum wavelength?


(b) Account for the existence of several series of lines in the spectrum. What quantity distinguishes one series of lines from another?


(c) Draw an electronic energy level diagram for the hydrogen atom and indicate on it the transition corresponding to the line of lowest frequency in the Balmer series.


(d) What is the difference between an emission spectrum and an absorption spectrum? Explain why the absorption spectrum of atomic hydrogen at room temperature has only the lines of the Lyman series.

2006-12-01 04:47:12 · 2 answers · asked by bosox1989 1 in Chemistry

2006-12-01 04:45:44 · 8 answers · asked by Kaylee S 1 in Astronomy & Space

Two steel plates are joined with a butt weld using a weld throat h of 3/8 in and the length of weld l of 4 in. Determine the shear stress S in the weld for a shearing force F of 15000 lbf

2006-12-01 04:44:56 · 4 answers · asked by DtAn 1 in Engineering

I want to build a light like the one below because I don't want pay $35 for a pre-made one. I know it can be done because I own a night light that is just a blue LED. I figured $35 for what amounts to a cluster LED's, a resister, a compositor, and a base is a bit excessive when you figure they're built in bulk.

When I searched on Google all I could find was plans for battery powered lights.

http://www.thisnext.com/item/4FB23B0B/1-3-Watt-110V-LED-Light-Bulb

2006-12-01 04:44:28 · 5 answers · asked by bigerv4u 2 in Engineering

Is DNA made of proteins? If so, then how come at 55 degrees celsius protiens denature whereas the DNA doe not?

plez give me easy to understand answers as possible for im in only 9th grade and have not gone to college.

2006-12-01 04:42:10 · 6 answers · asked by aretmis097 1 in Biology

Please let me know your city and state. I live in St. Peters, Missouri, about 20 miles west of St. Louis.

2006-12-01 04:41:59 · 31 answers · asked by Amy L 3 in Weather

I have often heard that when a large ship sinks it sucks down any objects or survivors that may be floating near by. If this is the case what causes it. Or indeed is it because the escaping air from the sinking ship causes the water near buy to become less dense meaning the objects near by have aparently less boyancy.
JOHN

2006-12-01 04:41:36 · 13 answers · asked by g7bwi 1 in Physics

2006-12-01 04:40:54 · 4 answers · asked by jmccoy2 1 in Mathematics

I usually do my homework on my own no prob. I have finals coming up in a week and need some assistance so I don't get screwed over. Plus I suck at math for the most part.

So,

Divide (6p³ + 11p² + 17p -18) ÷ (3p - 2)

and

√54x^7/y^8

Thanks a mil.

2006-12-01 04:40:13 · 6 answers · asked by Chris R 1 in Mathematics

2006-12-01 04:39:29 · 5 answers · asked by Susannah O 1 in Mathematics

A steel member has a Brinell of HB =250. Estimate the ultimate strength Su of the steel in MPa.

2006-12-01 04:35:52 · 1 answers · asked by DtAn 1 in Engineering

A steel member has a Brinell of HB =250. Estimate the ultimate strength Su of the steel in MPa.

2006-12-01 04:34:51 · 1 answers · asked by DtAn 1 in Engineering

Here is a math problem:
2+5x122-4+789+000-89+4567890+987654321-987654321+1=

2006-12-01 04:34:23 · 6 answers · asked by mayalazaravilla 1 in Mathematics

2006-12-01 04:33:40 · 4 answers · asked by ojaswi k 1 in Mathematics

Here in northern Italy we've had the hottest Autumn since 150 years ago but since I live in the mountains it's getting quite cold now but with no snow.

2006-12-01 04:31:22 · 40 answers · asked by Brenno 6 in Weather