Science & Mathematics - 29 January 2007

2007-01-29 19:32:59 · 2 answers · asked by JizZ E. Jizzy 2 in Chemistry

And could you explain the steps? Thanks
1)In 5 years time i will be 4 times as old as my son. In 11 years time, the sum of ages will be 62. Find the sum of our ages today, find how old I am and my son today.

2) In four years time a mother will be three times as old as her son. Four years ago she was five times as old as her son. Find their present ages.

2007-01-29 19:29:00 · 12 answers · asked by Anonymous in Mathematics

Of the physicists in relation, Sun and Stars:
a) The sun never was and it will never be a star. Example: The temperatures in the interior of the Sun ºC is X (positive) intent energies. Then, in these environments thermonuclear reactions occur. b) How much the Stars of all Interstellar System, the temperature corresponds the inverse one of the Sun, X °C (negative) for the thermonuclear inverse reaction - the distributed energies. Thus the balance of the temperature in the Land could only exist.

2007-01-29 19:28:07 · 1 answers · asked by britotarcisio 6 in Physics

2007-01-29 19:26:29 · 4 answers · asked by Anonymous in Physics

my strain gauge is FLA 5-11 model by TML and its resistance is 120ohm. what is the connection btwn this and the other 3 resistors?

2007-01-29 19:22:29 · 1 answers · asked by clueless 1 in Engineering

2007-01-29 19:22:18 · 19 answers · asked by jimmy s 1 in Physics

It is said that when we heat a liquid it gets evaporated. But if we heat milk why does it flow instead of getting evaporated? serious answers only.

2007-01-29 19:18:52 · 10 answers · asked by gouls 2 in Physics

i do it all the time

2007-01-29 19:18:50 · 11 answers · asked by allamericanandlovinit 1 in Biology

2007-01-29 19:17:20 · 11 answers · asked by ilyas g 1 in Zoology

electricity
magnetism
the electrical field
the magnetic field
void
electrons
positrons

2007-01-29 19:16:48 · 2 answers · asked by Anonymous in Physics

2007-01-29 19:16:03 · 13 answers · asked by Tejus PM 2 in Earth Sciences & Geology

This is under ideal conditions.

2007-01-29 19:12:08 · 2 answers · asked by Jake D 2 in Physics

...how long the Sun will last for? They say a couple or few billion years which is like forever but how do they know that it won't burn out or blow up tomorrow, next week or next year?

2007-01-29 19:10:02 · 8 answers · asked by kicking_back 5 in Astronomy & Space

what is fermentation?

2007-01-29 19:09:21 · 2 answers · asked by kristen 1 in Other - Science

An astronaut fprgot one bucket of water on moon & returned to earth.
After ten years he again visited the moon.What will he find there in place of water in the bucket?

2007-01-29 19:08:00 · 12 answers · asked by rajesh bhowmick 2 in Physics

2007-01-29 19:06:38 · 6 answers · asked by blueravioli7 2 in Medicine

find the set values of x such that/...fg(x) = gf(x).
gf(x) =e^|x| and fg(x) = |e^x|.

2007-01-29 19:04:14 · 2 answers · asked by pinkiezbox 1 in Mathematics

2007-01-29 19:04:01 · 4 answers · asked by ilyas g 1 in Botany

I saw Hale-Bopp's Comet. I'll never forget how well we could see it. McNaught is brighter. Wow, that's Sci-fi.

2007-01-29 19:03:51 · 1 answers · asked by elliebear 7 in Astronomy & Space

There were 60 litres of wine in two barrels. When 1/4 of wine was transferred from the first barrel to the second one, the amount of wine in the second barrel became three times as great a sthe new amount of wine in the first barrel. How much wine was there in each barrel originally?

And... can u explain how u did it?

2007-01-29 19:01:52 · 4 answers · asked by Anonymous in Mathematics

its some kind of process in plants that is a necessary evil i think botanists can answer it

2007-01-29 18:59:54 · 6 answers · asked by ilyas g 1 in Botany

2007-01-29 18:57:03 · 4 answers · asked by ilyas g 1 in Zoology

pls gave me the right chemical formula of the ff:
1.sodium carbonate+nitric acid
2.sodium carbonate+sulfuric acid
3.sodium carbonate+acetic acid
4.zinc metal or zinc+hydrochloric acid
5.zinc metal or zinc+nitric acid
6.zinc metal or zinc+sulfuric acid
7.zinc metal or zinc+acetic acid

2007-01-29 18:55:55 · 2 answers · asked by Anonymous in Engineering

2007-01-29 18:55:15 · 3 answers · asked by Waddetree 2 in Astronomy & Space

A mixture of sodium oxide or sodium carbonate and calcium oxide or calcium carbonate work together to form soda-lime glass....?

2007-01-29 18:47:37 · 6 answers · asked by emikato_913 2 in Chemistry

PLZ HELP ME I WANT TO MAKE PROJECT REPORT ON THIS

2007-01-29 18:45:05 · 1 answers · asked by Anonymous in Botany

I found a key and there is a serial number on the back. Could I use this to find what the key goes to? Could I use it to find out who's it is so I could return it?

2007-01-29 18:44:42 · 2 answers · asked by Anonymous in Other - Science

i'm wondering how the scientists can show 8 dimensions or more in our universe...

2007-01-29 18:44:12 · 5 answers · asked by TeaTee 2 in Physics

2007-01-29 18:42:06 · 4 answers · asked by Anonymous in Other - Science

i was told that it was a liquid because it will after many many years will begin to sort of "drip"

2007-01-29 18:40:01 · 10 answers · asked by raul b 2 in Chemistry