Science & Mathematics - 14 February 2007

2007-02-14 21:22:54 · 16 answers · asked by robbie a 1 in Astronomy & Space

Does invisible light (infra-red), or visible light go fastest?

What color of light goes the fastest? They are different wavelengths, so they have different energies & therefore masses, so the speed has to be different, right?

Does light travel faster when it is separated, or when it is combined into a white light?

Does laser light travel faster than regular light since it is more focused and delivers more energy in less space?

2007-02-14 21:21:32 · 6 answers · asked by Anonymous in Astronomy & Space

2007-02-14 21:17:34 · 5 answers · asked by kaleem G 1 in Physics

I have a question?

They say there was a big bang or something, that is how we got here. Space & time are closely related. They can see billions of light years away to find more about the big bang or whatever. Yet they say time is winding down, etc etc.

My question is, they say that space is infinite in size and has no boundaries. If this is true, wouldn't it require infinite time to travel accross infinite space?

Does this prove that time is infinite because of space? What is even more puzzling is if spacetime is infinite, time can't be measured since space can't be measured, so...,

theoretically, we shouldn't even be here? How did we have a beginning if time & space are infinite with no beginning? How can space & time have an end if they have no beginning?

Wouldn't it take infinity for space to collapse if it did collapse, due to its infinite size? If space took infinity, time would also?

How does time exist on earth, despite being inside unmeasurable infinite space?

Answers?

2007-02-14 21:17:11 · 5 answers · asked by Anonymous in Astronomy & Space

problem w/ quad. formula:

2 +-sqrt(4+4p^2) / 2

the discriminant is supposed to simplify into 1 + p^2, but i don't understand how. can some1 help clarify this pls?

2007-02-14 21:16:52 · 4 answers · asked by Anonymous in Mathematics

2007-02-14 21:14:44 · 2 answers · asked by Mawkish 4 in Biology

I would like to know all about lens.E.g; focal length,principal axis,magnification,working principles of lens and all the diagrams and formulars with derivations.

2007-02-14 21:12:09 · 4 answers · asked by Bone 1 in Physics

2007-02-14 21:11:41 · 3 answers · asked by Anonymous in Earth Sciences & Geology

2007-02-14 21:02:34 · 10 answers · asked by Anonymous in Physics

2007-02-14 21:02:13 · 4 answers · asked by Anonymous in Physics

2007-02-14 21:02:10 · 4 answers · asked by peterphillips.php@btinternet.com 1 in Engineering

does it mean 24 divide by 3 ? or 12/3 ? how many hours before i should take the next dose ? i am taking antibiotics. or it does not matter as long as a take it a few hours later ?

2007-02-14 20:58:46 · 8 answers · asked by forgetcase 2 in Medicine

why?

2007-02-14 20:58:33 · 4 answers · asked by 171 1 in Chemistry

2007-02-14 20:57:24 · 2 answers · asked by Anonymous in Mathematics

ants are the small creatures

2007-02-14 20:56:25 · 10 answers · asked by genius 1 in Biology

2007-02-14 20:53:06 · 11 answers · asked by ammy 1 in Physics

Could you got a gazillion below absolute 0?
Could you go beyond an extreme plasma state?

If something is hot, but you add extra energy, it has to heat up, no matter how hot it already is, right?

Do hot & cold have infinite boundaries that we can't fathom or reach?

2007-02-14 20:50:05 · 6 answers · asked by Anonymous in Astronomy & Space

In calculating just one distance between the earth and the moon, Hipparchus was assuming that the orbit of the moon was circular. In fact it is not. Find the most up to date figure for the shortest and the greatest distance to the moon. How were these distances determined? How do they compare to Hipparchus' method?

2007-02-14 20:47:33 · 2 answers · asked by shamonashangout 2 in Mathematics

I was driving home tonight in visalia, california and i saw two lights moving in the sky one above the other flashing like they were on fire, things were falling off it and it got farther south and it like burned out . I have seen it before but not two they go from north to south not every fast and lower then a star, i took a picture of it both times and they didnt come out.

2007-02-14 20:43:46 · 4 answers · asked by sexy g 1 in Astronomy & Space

I'm 24 and living in london. I'm working full time in the transport industry but I would like to become an installation electrician and eventually work for myself. I've never done an apprenticeship in an electricial environment and at this stage in my life I can't afford to. My knoledge of electrical installations and the 16th edition is faifly good for a novice. Does anyone know of any self study corses I can take in order to get the qualifications I need? I have the 16th edition already but if you know of any other books that might be useful then please let me know. Many thanks!

2007-02-14 20:42:31 · 2 answers · asked by In The Rat Race 1 in Engineering

With these reduction potentials:
SO2 + 2H2O --> SO4- + 4H+ + 2e- E/v = -0.17
VO2(sub)+ + 4H+ + e- --> VO2(sup)+ + H2O E/v = +1.00
VO2(sup)+ + 2H+ + e- --> V3+ + H2O E/v = +0.34

What will happen if SO2(g) is bubbled into VO2(sub)+(aq) ?

2007-02-14 20:41:32 · 2 answers · asked by Faisaltheonly1 2 in Chemistry

2007-02-14 20:34:04 · 1 answers · asked by Anonymous in Chemistry

Ancient writers derived the name salix from salire, to leap, because 'it springs up with such speed' - is it true? Is it a fast grower? And if so, how fast?

2007-02-14 20:32:30 · 2 answers · asked by Juno 2 in Botany

32=4D

Solve for D

2007-02-14 20:32:11 · 11 answers · asked by jayR12 1 in Mathematics

It is researched mathematecally that there are total of 10 dimensions out of which we can experience 3, what do the remaing seven dimensions hold?

2007-02-14 20:28:26 · 7 answers · asked by mmanuash 1 in Physics

...demonstrating which property of waves?

2007-02-14 20:26:15 · 3 answers · asked by blah 3 in Physics

2007-02-14 20:25:30 · 4 answers · asked by Anonymous in Engineering

2007-02-14 20:23:10 · 8 answers · asked by t s 1 in Mathematics

I think its mass divided by atomic mass units...what is that?

2007-02-14 20:23:00 · 9 answers · asked by tropical dream 1 in Chemistry

I also need help in finding the sin of 2x and 3x and 2/x and 4/x.
But I really need help in graphing and what commands to put in.

2007-02-14 20:22:26 · 3 answers · asked by Erickson B 2 in Mathematics