Science & Mathematics - 2 July 2007

factor the expression

1.x^3+2x^2-3x-6
2. x^3+4x^2+x+4

2007-07-02 06:46:32 · 2 answers · asked by Berry A 2 in Mathematics

2007-07-02 06:42:46 · 2 answers · asked by Josh 2 in Earth Sciences & Geology

lol i'm not Sylar i'm just curious

2007-07-02 06:41:58 · 3 answers · asked by Cyber 6 in Biology

Where do they come from? Are photons "matter"? Do they have any mass? Is light made of photons? Can anything travel faster than the speed of light? sorry for all the questions but im just really curious!!! can someone please give me some answers in non-physics langauge (im not very good at physics) thank you!! :)

2007-07-02 06:35:21 · 10 answers · asked by Anonymous in Physics

2007-07-02 06:34:47 · 27 answers · asked by Anonymous in Astronomy & Space

Two trains leave from a cityi at 9:30 A.M and 10:00 A.M. and travel at 60kmph and 70 kmph resp. How many km from the city will two trains be together?

2007-07-02 06:34:35 · 5 answers · asked by plasmalightwave 1 in Mathematics

Where do they come from? Are photons "matter"? Do they have any mass? Is light made of photons? Can anything travel faster than the speed of light? sorry for all the questions but im just really curious!!! can someone please give me some answers in non-physics langauge (im not very good at physics) thank you!! :)

2007-07-02 06:33:50 · 9 answers · asked by Anonymous in Astronomy & Space

We're supposed to get past 100 degrees ... sun rise at 6:30 ... sun set around 8:45 PM.

I'm looking for the two hottest hours to find a movie time so I can escape the worst of the heat ... Thanks.

2007-07-02 06:32:55 · 24 answers · asked by Giggly Giraffe 7 in Weather

Factor the Expression

1.x^2-9
2. 2x^2-4x

2007-07-02 06:30:13 · 3 answers · asked by Berry A 2 in Mathematics

using formula for the nth term, of a goemetric sequence, what is the 10th term?

Thank you

2007-07-02 06:28:18 · 3 answers · asked by quepid622 1 in Mathematics

use the geometric sequence of numbers 1,3,9,27... to find the following: What is r, the ratio between two consecutive terms??

Thank you

2007-07-02 06:26:04 · 4 answers · asked by quepid622 1 in Mathematics

Rent £200
Food £100
Entertainment £50
Other £50

how do i put this into a pie chart ?

2007-07-02 06:24:13 · 17 answers · asked by Top_Gear_Biggest_Fan 5 in Mathematics

when hydie was born her mother was 21 years old. at present hydies age is 30% of her mothers age. how old is hydie now? please help me with undrerstanding how to do this queastion.

2007-07-02 06:23:46 · 9 answers · asked by jusme 2 in Mathematics

2007-07-02 06:22:55 · 3 answers · asked by Chaz 1 in Mathematics

which of the following will favour the reverse reaction...

the total volume of the system is increased

boiling water is added to the system

water vapour is removed from the system

the system is cooled

2007-07-02 06:22:39 · 2 answers · asked by Anonymous in Chemistry

2007-07-02 06:19:48 · 9 answers · asked by Magd 1 in Engineering

This is about inequalities. I solved it but I don't know which one is the right answer. The question is:
-8w+4>or equal to12

I got w= -1 but there's two answer options that are similar.

a.) w I w b.) wI w>or equal to -1

I'm thinking that the answer is b (doesn't it have to be opposite?), but I'm not sure. Can you tell me which one is the right answer and why?? Thanks.

2007-07-02 06:18:17 · 8 answers · asked by Rahwa 4 in Mathematics

2007-07-02 06:16:36 · 6 answers · asked by Shaurya S 1 in Physics

2007-07-02 06:13:16 · 5 answers · asked by lupiters730 1 in Chemistry

2007-07-02 06:11:45 · 15 answers · asked by makayla m 1 in Biology

On what basis does electrons revolve around the nucleus in different orbits?What decides the shape of an orbital?

2007-07-02 06:11:16 · 4 answers · asked by Anonymous in Physics

ethanol and water are completely miscible (they dissolve in each other in all proportions)

when the two substances are mixed, is randomness increased or decreased?

heat is liberated in the dissolving process. does the tendency toward minimum energy favour the separated pure substances, or the solution of one in the other?

why are they completely miscible?

2007-07-02 06:10:03 · 4 answers · asked by Anonymous in Chemistry

2007-07-02 06:09:59 · 5 answers · asked by jennifer 1 in Mathematics

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

2007-07-02 06:02:32 · 7 answers · asked by ManiacTripx 1 in Mathematics

2007-07-02 06:00:53 · 3 answers · asked by tammysmith302 1 in Chemistry

in terms of...

change in observable properties
and
energy and entropy state

2007-07-02 05:59:06 · 3 answers · asked by Anonymous in Chemistry

Two parallel cylindrical wires made of lead
have diameters D=4mm and the distance
between their axes is L=5mm.

Both wires are in superconductive state. The wires
carry currents I=60A each in opposite directions.

What is the force of magnetic relpulsion F between the wires per unit length (per 1 meter)?

Note:
Meissner effect: magnetic field does penetrate
inside bulk lead (type I superconductor).

Easy-to-use magnetic force calculator
can be found here:
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/wirfor.html

2007-07-02 05:54:59 · 4 answers · asked by Alexander 6 in Physics

2007-07-02 05:52:00 · 7 answers · asked by jennifer 1 in Mathematics

75 + 2t = 100 – 2t

2007-07-02 05:51:32 · 14 answers · asked by Top_Gear_Biggest_Fan 5 in Mathematics

Can a object made of glass (candle stand - size & shape of an ice cube) break on it's own without being touched or moved from it's place? Please let me know if you need me to be more specific with my question. A very strange incident has occured and it seems very very mysterious

2007-07-02 05:50:08 · 9 answers · asked by Wils D 2 in Physics