Science & Mathematics - 2 October 2007

can you solve this???

2x - 3 / 3x = 5 / 6

This is involved on rational algebraic expressions.,

2007-10-02 23:46:38 · 5 answers · asked by Lance O 1 in Mathematics

plz i need to know what is the right number at the empty space ... i really need the answer ...
this is a link for it coz i didnt know how to write it here ...

http://img254.imageshack.us/img254/8880/63878972zm3.png

2007-10-02 23:37:49 · 1 answers · asked by angelink 1 in Mathematics

What happens if you are standing under a tree and the tree gets struck with lightning?

2007-10-02 23:36:48 · 2 answers · asked by g g 2 in Physics

if time is infinite,did it exist before the big bang!
which is theoretical,and will it end when the universe stops expanding?

2007-10-02 23:34:02 · 32 answers · asked by bob m 3 in Astronomy & Space

Light travels at approximately 3.0 x 10^8 m/sec.

How far does light travel in one week?

2007-10-02 23:19:44 · 6 answers · asked by journey 1 in Physics

2007-10-02 23:15:25 · 20 answers · asked by purplwitch 1 in Geography

Find Center and Radius of x^2 + y^2 - 4x + 8y - 5 = 0.

2007-10-02 23:13:33 · 2 answers · asked by journey 1 in Mathematics

How did we know the size of the hole in the ozone layer? Back when there was a hole in the ozone layer and everyone (who isn't retarded) was worried about it getting too big, how did scientists know how big it was? Were they able to take a UV picture of the atmosphere or what? Did anyone take a UV picture of the hole?

2007-10-02 23:11:45 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-02 22:59:09 · 8 answers · asked by Anonymous in Biology

2007-10-02 22:51:05 · 9 answers · asked by cool guy 1 in Geography

x^2 + y^2 - 6x + 10y - 2 = 0

Find the center and the radius of the circle with equation....


Im confused, any help would be appreciated!

2007-10-02 22:48:32 · 4 answers · asked by rosecrashers1365 2 in Mathematics

2007-10-02 22:37:45 · 3 answers · asked by Anonymous in Chemistry

x^2+8x+5=0

thanks!

2007-10-02 22:37:03 · 3 answers · asked by K Rose 3 in Mathematics

Find the equation of the line that is the intersection of the planes x=y=z=1 and y+z=0. (Please show work)

2007-10-02 22:24:14 · 3 answers · asked by sam b 5 in Mathematics

appear long before they should -- and in places where they should not...?

2007-10-02 22:21:00 · 7 answers · asked by Anonymous in Biology

I'm not only asking for the answer but rather someone to explain this whole process! My teacher is to lazy to explain it so I've never gotten it and we're going to have a test on pretty soon :|
help?

2007-10-02 22:20:55 · 7 answers · asked by kagome_chan21 2 in Mathematics

How do I find the distance between a point, say for example (1,1,1) to a plane, say x+z=0? (Please show work)

2007-10-02 22:19:56 · 3 answers · asked by sam b 5 in Mathematics

just picked up a celestron 130 slt. pretty good soo far. Whats the best for viewing deep sky? Do I need a better eye piece than the one it came with? Kinda confused.

2007-10-02 22:13:47 · 6 answers · asked by Mike m 2 in Astronomy & Space

"At noon a cargo plane leaves O'Hare Airport and heads east at 195 miles per hour. At 2pm a jet takes off from O'Hare and flies east after the cargo plane at 400 miles per hour. At what time (to the nearest minute) will the jet over take the cargo plane?"

2007-10-02 21:53:49 · 7 answers · asked by Anonymous in Mathematics

common acids eg. hydrochloric acids, sulphuric acid, nitric acid, ethanoic acid etc.

2007-10-02 21:53:12 · 6 answers · asked by andrea 1 in Chemistry

2007-10-02 21:50:23 · 6 answers · asked by Anonymous in Physics

2007-10-02 21:48:36 · 1 answers · asked by lee anna 2 in Chemistry

I think this is an urban myth, but my friend swears a nurse she knows told her it works and loads of medical type people do it.

The theory is, the speed camera cannot 'see' through undeveloped x-ray film placed over the car number plate.

The number plate is supposedly still visible to the naked eye, however, so if a human cop sees you he or she will not notice anything amiss.

My reason for thinking it is an urban myth is that if it was true, why don't we hear about people doing it? There are lots of people who would be lining up to take advantage of something like this if it was true.

Her argument to that is, how would ordinary people get undeveloped x-ray film, it's only available via medical channels and those folks are used to keeping their mouths shut!

If you have any facts, a web site, an informed opinion or just a good theory ~ please let me know.

I'd really like to win this one :-D

Please Note: I am NOT planning to try this, even if it is true!
1 week

2007-10-02 21:46:03 · 7 answers · asked by thing55000 6 in Other - Science

please give me reason with atomic funtion theory.
i knew that , temperature vibrate the resistive element in resistor so it increase resist, however other elements also vibrated due to temperature.
why other element not reduce resistance?

2007-10-02 21:41:12 · 3 answers · asked by din e 1 in Physics

2007-10-02 21:36:28 · 5 answers · asked by Persistent Anomaly 1 in Medicine

I don't understand the lesson we are doing but so far i am getting by.. But this one has stumped me. Can somebody try to help?

4y^2=200

With ^2 meaning to the second power.

2007-10-02 21:30:22 · 6 answers · asked by dolphingirl_862003 2 in Mathematics

2007-10-02 21:11:38 · 18 answers · asked by kokopelli 6 in Parapsychology

2007-10-02 21:10:47 · 4 answers · asked by bir.salem 2 in Physics

Okay there was one or two a few weeks or so ago but something seems to have changed if you look at the flows. The area for Asian Typhoons has just started getting heavy heavy weather. Is ther eany connection? Is something starting up now?

Check out the moving maps at http://www.weather.com/maps/maptype/satelliteworld/atlanticoceansatellite_large_animated.html

2007-10-02 21:05:29 · 4 answers · asked by Beertha 2 in Weather

the water in the plumbing in a house is at a gauge pressure of 300,000 Pa. what force does this cause on the top of the tank inside a water heater if the area of the top is 0.2m2?

2007-10-02 20:58:49 · 3 answers · asked by corvetteracing 1 in Physics