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 Posted: Fri May 04, 2007 3:52 pm
Emily`s_Gone_Mad The speed of light is 3.0 x 108 m/s. How many milliseconds does it take for a light signal from earth to reach and return from a satellite that is in orbit 30 miles above the earth? (1 millisecond = 10-3 seconds)
REviewing for chem final...got a little stuck on this...
stressed
I think I got it..
stressed sweatdrop
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Posted: Fri May 04, 2007 3:54 pm
How do you convert from degrees Fahrenheit to Kelvin?
Do you have to convert to Celsius first?
*studies*
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Posted: Fri May 04, 2007 3:57 pm
Emily`s_Gone_Mad How do you convert from degrees Fahrenheit to Kelvin?
Do you have to convert to Celsius first?
*studies*
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Posted: Fri May 04, 2007 9:05 pm
Emily`s_Gone_Mad How do you convert from degrees Fahrenheit to Kelvin?
Do you have to convert to Celsius first?
*studies* F = Fahrenheit C = Celsius (0 = freezing point of water, 100 = boiling point of water) K = Kelvin (0 = theoretical "absolute zero" of temperature; no motion at all in molecules) C = (5/9)(F - 32) K = C + 273 Did a little bit of algebra to combine the two equations and I got... K = (5/9)(F - 32) + 273 It's probably just easier to remember the one celsius equations though, and just go fahrenheit to celsius and add the 273.
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Posted: Sat May 05, 2007 12:34 pm
Somebody had heard or read about the nests where planets and stars are created and how are they formed? I would thank you alot if you share me the information.
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Posted: Sun May 06, 2007 11:35 am
K. Ryoko Somebody had heard or read about the nests where planets and stars are created and how are they formed? I would thank you alot if you share me the information. Quote: All stars are formed from nebulae (the plural of nebula). Nebula is a term for a cloud of gas, and stars form from gas. Stars more massive than ~ 6 solar masses are expected to supernova, stars less massive than this (like our Sun, of course) become white dwarfs. After a supernova, there may be nothing left, or there could be a remnant: either a neutron star or a blackhole. If the remnant is more massive than around 3 solar masses it will probably end up as a blackhole. Stars are smallest when they are burning hydrogen into helium, which is what stars do during most of their lifetimes. Stars in this stage are sometimes called dwarfs. There are also two other kinds of "dwarfs": white dwarfs are burned-out stars mentioned above (the Learning Center has more info on these), and brown dwarfs are stars which never accumulated enough mass to start burning hydrogen. Andy Ptak for the Ask an Astrophysicist Team http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970422f.html And there was also some news I remember seeing about stars forming on the edge of black holes.
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Posted: Tue May 08, 2007 10:22 am
Have I heard about an animal or crustacean that has the blood of another color, I think that it’s blue, if that is then certain, why that blood is of another color? question Does it have to do with the globules?
Excuse me if the question is not well written, I still continue learning English sweatdrop .
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Posted: Thu May 10, 2007 11:41 pm
K. Ryoko Have I heard about an animal or crustacean that has the blood of another color, I think that it’s blue, if that is then certain, why that blood is of another color? question Does it have to do with the globules?
Excuse me if the question is not well written, I still continue learning English sweatdrop . Quote: Crustacean blood differs from vertebrate blood in one other characteristic. It is not red as it lacks hemoglobin. Hemoglobin in vertebrate blood carries dissolved oxygen to the tissues and carbon dioxide to the respiratory surfaces. In most small crustaceans, these gasses are simply dissolved in the blood and the relatively larger volume of blood ensures that sufficient gas exchange occurs. In larger crustaceans, a chemical called hemocyanin is found dissolved in the blood. Hemocyanin is a material made of protein subunits complexed with copper ions. It will bind to oxygen in areas of high oxygen concentration and release it in areas of lower oxygen concentration, so it is a respiratory pigment. It is not a particularly good respiratory pigment when compared to hemoglobin, but it does appear to assist in oxygen transport. Like hemoglobin, its color changes depending upon whether or not it is carrying oxygen. Lacking oxygen it is colorless, but while carrying oxygen, it is a beautiful pale blue or cyan; which, of course, gives the pigment its name. Figure 4. The gills of a Northeastern Pacific shore crab, Hemigrapsus nudus, exposed in a dissection. The blue color in the gills is due to the hemocyanin in the crab's blood. The blue blood of the horseshoe crab Limulus polyphemus is extracted and used in biomedical research. http://www.reefkeeping.com/issues/2003-08/rs/index.php
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Posted: Fri May 25, 2007 4:49 pm
I need some information on human growth hormones.
1. How does the hormones get into your system?
(I'm guessing injections....)
2. If they are injections, how often are they, well, injected?
3. How much can you grow in two years?
4. What are the dangers?
It'd be great if you could help me whee
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Posted: Sun May 27, 2007 10:54 pm
This article will probably help more than anything. Check out the therapeutic section if you're looking for more information about interfering with the natural production of it.
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Posted: Mon May 28, 2007 4:45 pm
Palundrium This article will probably help more than anything. Check out the therapeutic section if you're looking for more information about interfering with the natural production of it. thank you! heart
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Posted: Wed May 30, 2007 8:59 pm
Palundrim, your awsome for answering people's questions!
3nodding
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Posted: Thu May 31, 2007 11:44 pm
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Posted: Fri Jun 01, 2007 4:24 pm
where did Charles Darwin's voyage take place?
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Posted: Sat Jun 02, 2007 5:54 am
Ninjara where did Charles Darwin's voyage take place? Darwin sailed on the second HMS Beagle. (Eight ships of the Royal Navy have been named HMS Beagle, after the beagle (a type of dog). All are obscure except for the second Beagle, 1820–1870, that transported Charles Darwin around the world. Not an answer to your question, but an interesting fact I just found out) Much of Darwin's famous work took place on the Galápagos Islands. However the ship's main venture was much longer. The following is extracted from the Wikipedia article: Second voyage of HMS Beagle. The second voyage of HMS Beagle from 27 December 1831 to 2 October 1836 was the second survey expedition of HMS Beagle, under captain Robert FitzRoy who had taken over command of the ship on its first voyage after her previous captain committed suicide. FitzRoy, fearing the same fate, sought a gentleman companion for the voyage. The student clergyman Charles Darwin took the opportunity, making his name as a naturalist and becoming a renowned author with the publication of his journal which became known as The Voyage of the Beagle. The Beagle sailed across the Atlantic Ocean then carried out detailed hydrographic surveys around the coasts of the southern part of South America, returning via Tahiti and Australia having circumnavigated the Earth. While the expedition was originally planned to last two years, it lasted almost five. http://en.wikipedia.org/wiki/Second_voyage_of_HMS_Beagle
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