Science & Mathematics - 24 July 2007

Where is my schedule for next year?

2007-07-24 14:00:38 · 3 answers · asked by Anonymous in Geography

I'm having problem with some basic 2nd order equations. The problem states, find the solution of the given initial value problem: y'' + 3y' = 0; y(0) = -2 and y'(0) = 3. The ANSWER is y = -1 = e^(-3t). Thanks for the help.

2007-07-24 14:00:36 · 1 answers · asked by Charlie4590 2 in Mathematics

2007-07-24 14:00:29 · 4 answers · asked by brandilynn222 1 in Biology

energy can be released from something such as wood,coal,gas ect. generated in many ways or can be seen or felt in forces of nature. the question is could you have energy as a separate entity that could be held or observed

2007-07-24 14:00:16 · 9 answers · asked by greg b 1 in Physics

2007-07-24 13:59:00 · 3 answers · asked by Zack 4 in Biology

2007-07-24 13:58:47 · 1 answers · asked by rionaerith 1 in Chemistry

Discuss the various roles that detritus can play in aquatic eocsystems.Why have some cottage towns insisted that thier residents equip cottages with sewag-holding tanks?

2007-07-24 13:54:16 · 2 answers · asked by Anonymous in Weather

2007-07-24 13:51:11 · 8 answers · asked by Anonymous in Zoology

2007-07-24 13:49:04 · 12 answers · asked by ? 5 in Astronomy & Space

I am studying electronics and I have been having a very difficult time understanding the concept of induction and the relationship between voltage and current as it applies to induction. can someone help me??

2007-07-24 13:40:12 · 1 answers · asked by r_lodermeier 2 in Engineering

2007-07-24 13:40:05 · 4 answers · asked by Anonymous in Biology

2007-07-24 13:34:53 · 1 answers · asked by Anonymous in Weather

does your paper carrier walk across your lawn? Explain why the grass often appears dead along the paper carrier's path, even in early spring. Why does the grass next to the path appear much healthier?

2007-07-24 13:31:45 · 4 answers · asked by Anonymous in Weather

after a wind, many of the projections break from snow crystals. Explain how winds affect the insulating value of snow

2007-07-24 13:29:11 · 1 answers · asked by Anonymous in Weather

2007-07-24 13:20:09 · 5 answers · asked by Anonymous in Medicine

Last math question, I promise. If someone could explain this I would appreciate it.

Many thanks.

2007-07-24 13:16:48 · 7 answers · asked by andrew l 2 in Mathematics

The diversity of algal species is calculated for a coastal area before and after an oil spill.

Light abosorption by a pigment is measured for red,blue,green, and yellow light.

Batches of seeds are soaked in salt solutions of different concentrations, and germination is counted for each batch.

An investigator hypotheesizes that the adult weight of a dog is higher when it has fewer littermates.

Guinea pigs are kept at different temperatures for 6 weeks. Percent weight gain is recorded.

2007-07-24 13:15:50 · 2 answers · asked by Anonymous in Botany

limit as x approaches infinity

f(x) = sq root of(9x^2-x) over (x^3+1) the answer is suppose to be 3 ... how? explain what to do with the square root, please?

2007-07-24 13:13:34 · 2 answers · asked by Anonymous in Mathematics

If possible i;d like to hear both sides of the arguement.

2007-07-24 13:00:29 · 5 answers · asked by Salivating Fish 3 in Biology

2007-07-24 12:55:55 · 5 answers · asked by Anonymous in Biology

Water is leaking out of an inverted conical tank at a rate of 11000 cm^3/min at the same time that water is being pumped into the tank at a constant rate. The tank has height 6 m and the diameter at the top is 4 m. If the water level is rising at a rate of 20 cm/min when the height of the water is 2 m, find the rate at which water is being pumped into the tank.

2007-07-24 12:52:36 · 2 answers · asked by Anonymous in Mathematics

sodium acetate at a fair price and apart from online?

2007-07-24 12:52:14 · 3 answers · asked by franevilbob 3 in Chemistry

can you use something else instead of a razor blade to make a foxhole radio work?

2007-07-24 12:52:10 · 3 answers · asked by cityofcarlos 2 in Engineering

2007-07-24 12:48:38 · 4 answers · asked by J M Davis 2 in Physics

Specimen in question is 3' shrub in a #5 plastic pot. It's a broadleafed deciduous shrub. PALMATE leaves are 3" x 3" (incl. petiole) and opposite. ENTIRE leaf margins. Surface of leaf is 'slightly' tomentose (sericeous?) - very silky to the touch.
Infloresence appears now (mid summer.) 'Flowers' are terminal, complete, perfect, thyrse, indeterminate and 'resemble lilacs' in 3" clusters of small 1/4" (lilac colored) 'compact' flowers.
No discernable aroma to infloresence or bruised foliage.
Bees love it. Bark light brown and fairly smooth to touch. Presents vibrant yellow foliage in fall that lasts for weeks. Infloresece persistant. No pests or diseases in over 3 years.
Tried to key it out to no avail. Thanks.
oh, pic available - http://www.flickr.com/photos/8051390@N04/?saved=1

2007-07-24 12:45:41 · 2 answers · asked by Ned Ludd 1 in Botany

Need help solving the indicated operations

2√[48] + 7√[12] –√[27]

2007-07-24 12:42:48 · 6 answers · asked by Anonymous in Mathematics

Most people think that matter warps space-time towards its center of mass, but is it possible that our own space-time is static- unable to warp, causes matter to expand?

2007-07-24 12:36:57 · 3 answers · asked by rosamiliatony 1 in Astronomy & Space

I just really want to know do they just disappear or turn into something..but why would they just disappear and can you destroy one?But...I really really want to know whats inside of a black hole what it looks like..if its really just black or what..And than theres the fact that im amazed that they are even created...Its hard to believe but I understand how they are made..Its just really confusing thinking about this all the time lol..

2007-07-24 12:35:40 · 11 answers · asked by dylanme 1 in Astronomy & Space

I saw the most amazing lightning strike last night. It was so close to me, that, literally, everything went white for a second. It was, by far, the brightest light I've ever seen. It actually looked hot. When I went home and told my husband he began explaining that certain "types" of lightning strike from the ground up. I know I can google this but am curious what the majority believes...

2007-07-24 12:34:29 · 7 answers · asked by philisopheyes 3 in Weather

F(x)= 2/x - 1/x^2

I have come up with the answer that there is no maximum

2007-07-24 12:32:17 · 7 answers · asked by tom 1 in Mathematics