Science & Mathematics - 10 January 2007

2007-01-10 23:59:40 · 5 answers · asked by Anonymous in Other - Science

2007-01-10 23:58:07 · 9 answers · asked by shirlgirl 1 in Mathematics

- x + 1/3y = 14/3
- 2x - 1/3y = 13/3

2007-01-10 23:57:22 · 10 answers · asked by miky2tones 2 in Mathematics

We drive over them every day. We all see them in our streets.
Were other shapes ever considered? Has anyone ever seen one that is not round?

2007-01-10 23:53:39 · 16 answers · asked by Titus 5 in Engineering

It's about variation.

Thanks!

2007-01-10 23:52:22 · 7 answers · asked by Anonymous in Mathematics

2007-01-10 23:51:41 · 5 answers · asked by ej_luv2 1 in Engineering

2007-01-10 23:50:22 · 1 answers · asked by bhupendra p 1 in Engineering

I have a window in my roof, and I was laying in bed and I saw what appeared to be 3 flashes simultaneously moving across the sky.

It was one flash followed by another brighter one underneath it, and then another one slightly dimmer after that (they was all white light, no other colours)

That sequence happened about 3 times in a row giong from right to left across my window and then ended in a large flash.

Whatever it was, it seemed to be a bit lower in the sky as what an Airplane would have been at. And it almost looked like 3 camera flashes going off at once.

Does anyone know what the hell it was?

2007-01-10 23:49:10 · 10 answers · asked by Anonymous in Astronomy & Space

2007-01-10 23:48:27 · 4 answers · asked by NICKY C 1 in Astronomy & Space

it should stand out from among other pictures... it should also be a recent one... it's for my project... thanks...

2007-01-10 23:39:50 · 11 answers · asked by switchick4u 1 in Physics

2007-01-10 23:35:00 · 8 answers · asked by clarenzmagsakay 1 in Mathematics

what over the counter drugs contain Amphetamine?

2007-01-10 23:32:21 · 6 answers · asked by Da Don 2 in Medicine

deep impact is a space probe!!!

2007-01-10 23:30:35 · 4 answers · asked by clarenzmagsakay 1 in Astronomy & Space

2007-01-10 23:29:24 · 3 answers · asked by wiseguy 1 in Engineering

2007-01-10 23:29:06 · 6 answers · asked by adrianne 1 in Chemistry

Well if you are that maths genius on yahoo answers,
try this one out



only if you have that maths talent in you, go for it,else, dont waste your time cracking this puzzle




lim x tends to 0


Prove that : -

[ tan x - sin x ] / [ sin 3x - 3sinx ] = 0

2007-01-10 23:26:22 · 4 answers · asked by wp1_wp1 1 in Mathematics

2007-01-10 23:25:08 · 2 answers · asked by Sampath 1 in Engineering

For each system, state multipliers you would use to eliminate each of the variables by addition.

x - y = 1
3x - y = 3


Solve each system of equations by the substitution method

x - 2y = 5
3x - 5y = 8

2007-01-10 23:21:27 · 9 answers · asked by RJS88 1 in Mathematics

Dont sit there wasting your time solving this puzzle


only a genius can get the answer to this

so try only if you have got that maths talent in you !!!!


best of luck




find the value of :


lim x tends to 0 [ 1 - (cos x)^3 ] / [ sin 2x ]

2007-01-10 23:21:08 · 4 answers · asked by wp1_wp1 1 in Mathematics

like r there any xtra terrestrial objects or anything????????

2007-01-10 23:20:59 · 10 answers · asked by Anonymous in Astronomy & Space

Science question:
Most electric wires are made of copper and aluminum. Silver is an excellent conductor. Again, why don't we use silver electrical wires?

2007-01-10 23:17:40 · 3 answers · asked by Anonymous in Other - Science

would you see air bubbles? if so why? j aged 10

2007-01-10 23:17:15 · 11 answers · asked by Anonymous in Chemistry

2007-01-10 23:17:10 · 10 answers · asked by scott h 1 in Earth Sciences & Geology

2007-01-10 23:13:09 · 2 answers · asked by KADOKUFERANSU 1 in Physics

2007-01-10 23:12:54 · 4 answers · asked by tjexplorer2013 1 in Weather

any body knows about designing a mechanical seal can any body help me

2007-01-10 23:12:38 · 1 answers · asked by inayat sheliya 1 in Engineering

A certain paint mixture of mass 135 kg contains 20% solids suspended in water. How many kilograms of water must be allowed to evaporate in order to raise the concentration of solids to 25%?

2007-01-10 23:11:42 · 1 answers · asked by edison c d 4 in Engineering

I have a UK combination meter to measure Voltage, Current and Wattage. It is 230V 50Hz appliance used to test household appliances. I'm using it to test Computer equipment power usage.

I need to measure the three metrics on a 230V 60Hz supply. I want to know if the meter will return an inaccurate reading for any of these. I think the Voltage will be fine but not so sure about the current!
Thanks

2007-01-10 23:10:56 · 3 answers · asked by jmac01 1 in Engineering

2007-01-10 23:09:49 · 1 answers · asked by majell d 1 in Engineering

Anything when burnt gives flame .what is its state of matter? Is it solid or liquid or gas or PLASMA

2007-01-10 23:09:35 · 13 answers · asked by Ayyagari S 2 in Physics