Science & Mathematics - 6 October 2007

Suppose that you don't know that the relation,
mechanical work W=F.S.

In this circumastances can you derive the equation Ek=1/2mv^2 (without using the relation W=F.S)?

I think any of the two relation (W=F.S and Ek=1/2mv^2) is axiomatic and they are circular. So that you can't get one of them without using the other. When one of them is defined axiomaticaly you can get the other.
Am I correct? please inform me!!

2007-10-06 23:52:50 · 1 answers · asked by Anonymous in Physics

Or aluminium and lead oxide? Or magnesium oxide and gold?

2007-10-06 23:51:17 · 2 answers · asked by Anonymous in Chemistry

please.........

2007-10-06 23:39:40 · 3 answers · asked by Anonymous in Biology

Ice is cold, but Eskimos live in igloos which are made of ice. Explain why.

Do cough and cold medicines cure or control the symptoms of illnesses?

A cold is caused by a cold virus. Can antibiotics cure a cold? Why/why not?

Samsu is an alcoholic drink that is produced illegally under unhygienic conditions. Explain why thousands have died from poisoning after drinking samsu.

Alcohol has become one of the world's widely abused drug. Why?

Tobacco smoke in the air contians higher concentrations of harmful chemicals - 21 times as much as nicotine, 15 times more than carbon monoxide, upto 130 times more carcinogens and up to 170 times more irritant substances. Why is this so?

Which parts of the cell would you associate 'warehouse' with?

Which organs do our skeletons protect?

What are the systems found in plants? What are the organs involved in these systems?

Can solar cells work at night under artificial light - why?

More questions -look at my profile Thank you!

2007-10-06 23:25:39 · 6 answers · asked by Yuppy kid! =P Roxzzz.... 2 in Other - Science

2007-10-06 23:21:06 · 13 answers · asked by Tracy S 1 in Mathematics

can someone please help me. websites will be useful.

2007-10-06 23:17:43 · 1 answers · asked by henry 1 in Medicine

briefly explain what is statistical distortion?

2007-10-06 23:13:54 · 1 answers · asked by Niruja T 1 in Mathematics

I am a metallurgical engg. student stdying in 3 rd year at jadavpur university
what shold i opt for.......
1.take software jobs
2.take core sector job
3.go for higher studies

2007-10-06 23:13:32 · 3 answers · asked by Ashis 1 in Engineering

2007-10-06 22:59:52 · 2 answers · asked by Anonymous in Physics

2007-10-06 22:52:47 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-06 22:51:12 · 14 answers · asked by Anonymous in Earth Sciences & Geology

i hope you can help me. i can't find any website for this mathematical prayer.
this is our project for this grading and i'll be passing it tomorrow.i need at least 20 mathematical prayers.

2007-10-06 22:39:28 · 2 answers · asked by lexlie 1 in Mathematics

2007-10-06 22:21:24 · 3 answers · asked by milkboyz 1 in Other - Science

I have read in a book its given the boiling point of nitrogen is -195.8 C

2007-10-06 22:10:48 · 8 answers · asked by chaithra 2 in Chemistry

A packet of mixed dry fruits weighs 700 gm. If it is made up of x gm and y gm Dry fruits (Rates 288 per kg and 112 per kg) find x and y. Cost of the packet is 216

2007-10-06 21:50:39 · 5 answers · asked by Angry dude 2 in Mathematics

my wife has bipolar disorder and has recently having seizures. They happen when she is extremely stressed. they last for several minutes. she has no memory of them. she also has cerebral palsy with mild myoclonus. But during the seizures, her myoclonus increase and she moans and groans through out. I have had experience with many types of seizure in my life but this is new. I researched and it appears to be psychogenic. Has anyone heard of bipolar with psychogenic seizures. She does not respond to anti-epileptics.

2007-10-06 21:25:54 · 1 answers · asked by Anonymous in Medicine

2007-10-06 21:06:00 · 17 answers · asked by Almas 2 in Astronomy & Space

2007-10-06 21:01:44 · 4 answers · asked by mayankkkkk_cancer 1 in Chemistry

Astronomers have spotted and weighed a tiny galaxy located 6 billion light-years away, or nearly halfway across the universe.

Dubbed SDSSJ0737+3216, the just discovered galaxy is 100 times lighter than our own Milky Way and is the smallest galaxy ever identified at that distance. It is about half the size and approximately one-tenth the "weight" of typical small galaxies found closer to Earth.

http://news.yahoo.com/s/space/20071005/sc_space/tinygalaxyspottedhalfwayacrosstheuniverse

2007-10-06 20:54:48 · 2 answers · asked by ari-pup 7 in Astronomy & Space

I'm looking for major companies that use the Draize eye test on rabbits. If anyone knows websites where I can find this information, direction would be appreciated. Thanks :)

2007-10-06 20:48:05 · 1 answers · asked by veggie_fta 2 in Chemistry

If you were to shoot a bullet, then slow down time and stand infront of the bullet, would it it you with the same amount of force as before you slowed down time?

Say you were to somehow distort space/time for only yourself, and someone fires the gun, and you slow down all time for yourself; The people in the original space/time see the bullet blow your brains out, but would it actually hit you like it would without time slowed down? If it doesnt, what would happen if you were to undistort your space/time? Would you see yourself dead on the ground and also be standing infront of everyone?

2007-10-06 20:46:58 · 5 answers · asked by Anonymous in Physics

Just imagine the sun would stop shining, without exploding. It would just totally disappear without causing harm. How long would human race survive without the benefits of the sun? 10 minutes? 10 hours? 10 days? Could it stand the cold longer? How long would it take for the atmosphere to get below zero degrees?

2007-10-06 20:45:09 · 5 answers · asked by Scab 1 in Astronomy & Space

how long would it take to cover 21 feet going 20 mph? 27ft going 20? can someone remind me how to do these problems so i can do the rest of them?

2007-10-06 20:43:04 · 4 answers · asked by sleepy4life 1 in Physics

Could it be possible, that humans were a genetically engineered life form,and created by aliens.

2007-10-06 20:41:15 · 21 answers · asked by Life goes on... 6 in Paranormal Phenomena

and the spring is compressed 10 cm. The spring is released and the block is propelled directly toward another horizontal spring with a force constant of 265 N/m. a) What is the speed of the block when it has traveled 0.5 cm from its point of release? b) What is the speed of the block when it is not in contact with either spring? c) How far does the block compress the second spring?

2007-10-06 20:40:29 · 2 answers · asked by ama 1 in Physics

2007-10-06 20:31:47 · 4 answers · asked by Emma's fan 1 in Astronomy & Space

this is a stats question

2007-10-06 20:29:46 · 5 answers · asked by Anonymous in Mathematics

* as a multiplication symbol

2007-10-06 20:18:46 · 12 answers · asked by ravi c 1 in Mathematics

2007-10-06 20:18:20 · 2 answers · asked by cute_lass585 1 in Physics

2007-10-06 20:16:46 · 12 answers · asked by thirt33n 3 in Geography