Science & Mathematics - 28 December 2006

is there a way people can stop global waming...what effects will it have if the north poles ice melts...i read in the newspaper that by 2040 there will be no ice there will it have any effects on weather.will it cause floods or anything or what....im just a little worried and i want to know if theres a way to stop it how can people stop global warming is there anything i can do that atleast i know that im doing somet to save the planet even if some people arent..

2006-12-28 04:10:17 · 34 answers · asked by whats up yaw 1 in Earth Sciences & Geology

When a farmer clears a field that has trees, he uses a tree to pull down the others, in the end there is one tree left. There is a name for that tree and I can not think of what it is called??? Any help out there???

2006-12-28 04:09:55 · 3 answers · asked by onethingoranother 1 in Botany

2006-12-28 04:09:06 · 3 answers · asked by FARMERAL 1 in Chemistry

One of my ongoing projects is to save electricity costs at my plant. We have several continuous-duty electric motors used to run things like conveyor belts. My question is, would shutting those motors on and off (ie: on for 20 days, off for 20 days) appreciably shorten the motor's life? I need to know if the plant would save any money by using less electricity, versus the replacement cost of the motors. Thanks.

2006-12-28 04:08:27 · 4 answers · asked by MadScientist 4 in Engineering

y study objects to the idea of treating molecular particles, such as molecules and atoms, as equal in kind to substances when discussing chemical reactions, thus confusing their different roles in the theory of matter.

The above is my abstract for this unique study, in particular. When comparing the confusion of the molecular particles with substances, it seems one would solely come to the same conclusion as I've arrived at in my abstract. What are your thoughts?

2006-12-28 04:07:15 · 3 answers · asked by Anonymous in Chemistry

2006-12-28 04:03:29 · 4 answers · asked by Anonymous in Other - Science

2006-12-28 04:01:45 · 25 answers · asked by Anonymous in Earth Sciences & Geology

2006-12-28 04:01:38 · 7 answers · asked by Hamid R 1 in Mathematics

some land is plotted in nice neat shapes. what would be one possible length and width in miles, of a rectangular shaped plot covering 864 acres

2006-12-28 04:01:25 · 4 answers · asked by j cool 1 in Mathematics

When using a fuel cell what goes in is hydrogen and oxygen right?
What comes out is water(h2o) and electricity right?
What if you could spilt the water back into hydrogen and oxygen and repeat the cycle?
You would never need more chemicals and you would keep gettting electicity?
Would this idea work?

2006-12-28 03:59:31 · 7 answers · asked by Anonymous in Chemistry

can ne one tell in detail what is
intermediate value property of continuos function

2006-12-28 03:58:28 · 2 answers · asked by Gunjit M 2 in Mathematics

2006-12-28 03:57:17 · 4 answers · asked by Anonymous in Chemistry

i need help with this problem, i dont understand any of the theorem or pascals triangle. please help. first answer gets best answer.

2006-12-28 03:57:14 · 6 answers · asked by Anonymous in Mathematics

2006-12-28 03:56:50 · 2 answers · asked by Helen B 1 in Weather

how do you write an equation for an given point?
What would this answer be?
(-1,1) and (0,3).
explain how you solved it please!

2006-12-28 03:55:45 · 6 answers · asked by Anonymous in Mathematics

LIke after they go by on the sky what happens to them?

2006-12-28 03:55:19 · 22 answers · asked by OHJAY. 2 in Astronomy & Space

2006-12-28 03:53:43 · 1 answers · asked by Anonymous in Medicine

10,000 years from now? 100,000 years from now? 1,000,000 years from now?

2006-12-28 03:50:43 · 14 answers · asked by Anonymous in Other - Science

2006-12-28 03:48:29 · 6 answers · asked by Mirza Hakimi 1 in Geography

i want to buy this $100 phone, and i get 10% off, whats the price now, ilive in IL, i don't know the tax here, how much will it be in all, including tax. thanx.

2006-12-28 03:46:55 · 9 answers · asked by Anonymous in Mathematics

2006-12-28 03:45:59 · 30 answers · asked by joel k 1 in Astronomy & Space

KE=1/2mv^2 is the equation for kinetic energy. The author of an online physics textbook for scientists/engineers states that the 1/2 constant in the equation is entirely a result of the metric system. That is to say that it is arbitrary. If you were to use another system, say the old English system, the constant would be different.

I believe that the 1/2 is a necessry consequence of the double integration of F=ma from classical mechanics. If by definition f=ma is true, then the 1/2 value for the kinetic must follow regardless of any unit system and is thus not arbitrary.

From my understanding 1/2 in the kinetic energy theorom is dissimilar from say the gravitational constant found in the equation for the universal law of gravitation. The gravitational constant is one of proportionality whose value would change depending on the units used.

Can a chemist or physicist clarify? or anyone else?

2006-12-28 03:45:17 · 8 answers · asked by David H 1 in Physics

2006-12-28 03:44:45 · 6 answers · asked by fastfredy0 2 in Physics

2006-12-28 03:44:37 · 3 answers · asked by keith100_adams 2 in Paranormal Phenomena

...as in wiring differences etc and when/why it's used ?

2006-12-28 03:43:51 · 6 answers · asked by Anonymous in Engineering

Take a 2 liter bottle, stick a nail in the front and back, and fill with about 1/5 salt and 4/5 pure distilled water. Connect the nails to a power source (1.5v to 30,000v depending on the speed you want). Collect the bubbles that come out of the bottle in a cylinder, compress gas until it become a liquid (will become very cold). Place an explosive charge (C4 is best, primer cord is ok) around the cylinder. Attach a metal cup with closed end on one side and ring (like a washer) on the bottom, and fill with hydrazine. Insert this module into a light plastic tube. Mount 3 motors spaced evenly apart at both the top and bottom of tube with wires routed into the tube and up to the top. Mount fins to motors. Connect your receiver unit at top and wire to motors and a camera at top. Place black/clear camera dome to top over camera. Wire primer to last channel remaining and insert into bottom of engine.

2006-12-28 03:40:51 · 9 answers · asked by The Judge G&E 1 in Physics

how long will it take you to walk around the irregular shaped 864 acres of farm land .please explain how you arrived at your answer

2006-12-28 03:38:07 · 5 answers · asked by j cool 1 in Mathematics

I asked earlier about an extra credit deal at my school where we have to freeze a steel pipe with chemicals and shatter it. Thanks to all who answered my question and it seems to be liquid nitrogen is the answer. I would like to experiment first because i need the credit. So my new question is where do i buy liquid nitrogen from and how much is it?

2006-12-28 03:37:47 · 7 answers · asked by ask me 1 in Chemistry

The normal practice to break cast iron large chunk is to drop big steel ball over it from a hieght. This process in unsafe and crude considering todays technology. Since cast iron is some what rigid, liquid nitrogen stream over it may create differential expansion/contraction leading to development of crack and there fore breaking into pieces.

2006-12-28 03:34:28 · 2 answers · asked by P.K 1 in Engineering

also every 19 and 3/8 inches are marked with an asteric.

2006-12-28 03:34:26 · 13 answers · asked by camper 1 in Mathematics