Science & Mathematics - 13 February 2007

2007-02-13 04:41:53 · 17 answers · asked by Anonymous in Paranormal Phenomena

2007-02-13 04:41:31 · 6 answers · asked by jenny t 1 in Other - Science

2007-02-13 04:39:28 · 3 answers · asked by RAZOR 1 in Engineering

A power unit is there by the bank of the river of 900 mtr width. a cable is made from power unit to power a plant opposite to that of the river and 3000 mtr away from the power unit. The cost of the cable bellows water Rs5 / mtr and cost of cable on the bank is Rs 4/ mtr. Find the pt where the cable cut through the river.
1.2800
2. 3000
3. 2100
4.3900

pls say the approach of solving the problem

2007-02-13 04:39:15 · 2 answers · asked by Anonymous in Engineering

Describe the mechanics of digestion as food passes through man's digestive system.

2007-02-13 04:39:06 · 1 answers · asked by me1026 1 in Biology

What is the star's approximate surface temperature? Do you just gestimate it or is there a mathematical formula to find it?

2007-02-13 04:38:48 · 1 answers · asked by brcalaska 1 in Astronomy & Space

Hey.I need to know which plant glycerin comes from?I know it can be synthetically made but also come from natural sources.
Thanx in advance!

2007-02-13 04:38:25 · 11 answers · asked by Anonymous in Botany

2007-02-13 04:37:08 · 17 answers · asked by Jonathan V 7 in Botany

2007-02-13 04:36:27 · 2 answers · asked by concha m 1 in Mathematics

Will the crew survive the trip?

2007-02-13 04:35:48 · 10 answers · asked by Catch 22 5 in Astronomy & Space

2007-02-13 04:35:15 · 8 answers · asked by Margaret T 1 in Chemistry

2007-02-13 04:29:13 · 2 answers · asked by chem.j 2 in Chemistry

i.e. as if the building is growing out of the cliff

2007-02-13 04:24:50 · 5 answers · asked by Anonymous in Engineering

A proton moving at 3.00*10^6 m/s through a magnetic field of 1.40 T experiences a magnetic force of magnitude 8.20*10^-13 N.

2007-02-13 04:24:35 · 2 answers · asked by Ant C 1 in Physics

I've built a Physics project, where a vertical circle moves around its axis (Y-axis), and there's a small ring on the circle. When I start rotating the circle (using an eletric motor), at a certain velocity, the ring starts to ascend, and as the speed increases the ring ascends higher and higher, until it reaches the middle (height of half a circle, of one radius). From this speed on the ring stays at its height until I slow the circle down and the rings descends to its starting position.

How can I explain this phenomena to my classmates?
(I'm in 11th grade)

2007-02-13 04:24:06 · 2 answers · asked by MiTTeLMaNiA 2 in Physics

negitive divided by a positive =??
negitive - negitive =??
positive - negitive = ??

2007-02-13 04:23:48 · 6 answers · asked by blue october 3 in Mathematics

basically mutate from something...

changing around your DNA.. will it affect anything if possible? or will just that DNA strand change?

2007-02-13 04:23:41 · 3 answers · asked by Anonymous 3 in Biology

Science fair project. She needs to know why some soups float and others sink. An explanation of why they float..does it have to do with weight, contents, density??? Mom's a science dummy so any little bit of information will help

2007-02-13 04:23:06 · 7 answers · asked by Queenie 1 in Physics

a man has 340 yds. of fencing for enclosing 2 separate fields, 1 is to be a rectangle twice the width and the other a square. The square field must contain at least 100sq yds and the rectangular field must contain at least 800sq yds. if x ist he width of the rectangular firld, what are the max and min possible values of x. What is the greatest number of square yards that can be enclosed in the two fields? Justify your answer

2007-02-13 04:22:00 · 4 answers · asked by mimilishi 1 in Mathematics

2007-02-13 04:21:37 · 11 answers · asked by Hayden j 1 in Geography

To convert a galvanometer into a voltmeter, the galvanometer must be connected in series with a large resistor (called a multiplier). What are the reason(s) for using a large resistance for the multiplier? I've tried getting the info from my book, but I am just not understanding what they mean. Could someone simplify please?

2007-02-13 04:21:01 · 3 answers · asked by webogirl 2 in Physics

how do you put 21 cows into 4 corrals so there is an odd number of cows in each corral?

this is a home work question, if you know the answer please how you figured it out because i tried and could not come up with the answer.

2007-02-13 04:20:54 · 6 answers · asked by lentini 1 in Mathematics

I've heard these things happen in the country. I come from Norfolk, UK. I also have heard of similar things in WV, USA?

2007-02-13 04:19:51 · 24 answers · asked by Anonymous in Biology

bacteria, protists, and viruses can cause human illness, but they can also have beneficial effects in our bodies or in the enviroment. explain this statement using specific examples of microbs from each of these three groups...someone help me out i dont even know what to do!!!

2007-02-13 04:19:23 · 6 answers · asked by bekah_2009 2 in Biology

Is it like a Nuclear bomb? or just what?

2007-02-13 04:18:30 · 5 answers · asked by Anonymous in Other - Science

1.The acid contained in storage batteries is
acetic
hydrochloric
nitric
sulfuric
_______
2.Hydrogen sulfide forms a white precipitate when passes into a solution of
Cd(NO3)2
Pb(NO3)2
CuCl2
ZnSO4
______

3.A sulfur compound that will readily dissolve sulfur is
H2SO4
SO2
CS2
H2S
_____

4.When sulfur reacts with oxygen, heat is
neither liberated nor absorbed
absorbed
liberated
sometimes liberated and sometimes absorbed
______

5.Sulfur dioxide is used in commercial refrigerators because the gas
is easily liquified
dissolves in water
is cold

_____
6.If the volume of sulfuric acid in an uncovered beaker increased gradually during a perios of several weeks, the increase was probably due to the absorption of
carbon dioxide
nitrogen
oxygen
water
_____
If you could answer even one that would be helpful. Also if number 3 you could show the reaction that would be helpful also. Thanks again.

2007-02-13 04:18:11 · 2 answers · asked by Joe 2 in Chemistry

where ?
when?
how?

2007-02-13 04:17:02 · 10 answers · asked by prithviraj r 1 in Astronomy & Space

where ?
when?
how?

2007-02-13 04:16:38 · 10 answers · asked by prithviraj r 1 in Astronomy & Space

1. Solve the equation. If no solution exists, write no solution.

x-3
---- = x+5 / 7
3

Thanks.

2007-02-13 04:15:15 · 5 answers · asked by Anonymous in Mathematics

2007-02-13 04:15:00 · 4 answers · asked by Anonymous in Engineering