Science & Mathematics - 23 July 2007

2007-07-23 05:55:42 · 8 answers · asked by shy_happy25 1 in Medicine

2007-07-23 05:52:24 · 2 answers · asked by Anonymous in Mathematics

Whats the method used to simplify these fractions.
1) 2x^2 + 7x +6
(X-5)(X+2)
2) 2x^2 + 9x-18
(x+6)(x+1)
3) 3x^2 - 7x+2
(3x-1)(x+2)
its the top equation over the bottom
i need to know how they are done.
Thanks

2007-07-23 05:52:05 · 2 answers · asked by Anonymous in Mathematics

The north has been hit for the last 2 months and hardly a word muttered

2007-07-23 05:47:41 · 18 answers · asked by Jay 3 in Weather

If a lead acid battery is rated 50Ah, this means that it can provide continuously to a 10A load during 5hrs or full 50A to a load during one hour.But, does that also means that it can provide 100A to a load during 30 minutes?Or 3000A during 1 minute???

2007-07-23 05:44:04 · 4 answers · asked by Anonymous in Engineering

2007-07-23 05:42:51 · 3 answers · asked by rayanndeleon03 1 in Botany

I think I have just created a magnetic capacitor. it wasn't what I was origanly trying to make. but through some weird serendipity it seems that I have. I think I have because I'm getting a magnetic field way stronger than I should be able to create with the voltages I'm using. and it comes in pulses. but my question is. is there anything that says it is physically imposable to make a magnetic capacitor. so I know I'm not mistaken with my assumption

2007-07-23 05:41:56 · 2 answers · asked by john m 2 in Physics

It may be a silly question. I don't, but I don't know about you.

2007-07-23 05:40:14 · 9 answers · asked by Anonymous in Astronomy & Space

prescription medicine

2007-07-23 05:37:26 · 2 answers · asked by dianee 1 in Medicine

2007-07-23 05:37:17 · 7 answers · asked by Homey 2 in Zoology

And 2 of them each weigh 100lbs. How many trips will they have to make to cross the river?

2007-07-23 05:37:16 · 13 answers · asked by Anonymous in Mathematics

The magnetic field perpendicular to a single 10.1 cm diameter circular loop of copper wire decreases uniformly from 0.780 T to zero. If the wire is 2.05 mm in diameter, how much charge moves past a point in the coil during this operation?

2007-07-23 05:32:25 · 1 answers · asked by Anonymous in Physics

if you shine a powerful Laser into another Laser, would the photons be destroyed ?

2007-07-23 05:31:23 · 7 answers · asked by ronaldmallier 1 in Physics

2007-07-23 05:31:23 · 2 answers · asked by malo 1 in Mathematics

Does the line that passes throught the points (-3,2) and (2,5) have a positive or negative slope?

^^ help again^^

2007-07-23 05:30:15 · 6 answers · asked by Kwan L 2 in Mathematics

Ok so I was given homework on my summer break, right now im working on math. Its been awhile since Ive done these kind of problems so if someone could double check my answers for me that would really be nice.They all deal with simplifying.

1) (2 sqrt6)^2
My answer: 24

2) (sqrt6)(sqrt3)
My answer: 3 sqrt2

3) sqrt3/sqrt16
My answer: sqrt3/4

4) 8 sqrt5/sqrt4
My answer: 8 sqrt5/2

5) sqrt2/sqrt5
My answer: sqrt10/5

6) 3/sqrt12
My answer: sqrt12/4


Thanks!

2007-07-23 05:29:19 · 6 answers · asked by ellyceqt 1 in Mathematics

(a)melt
(b)sublime
(c)condense
(d)evaporate
(e)fuse

2007-07-23 05:15:44 · 5 answers · asked by Tam 1 in Physics

I graduated three years ago and would like to know the best method to take my career to the next level. There is so much out there to cover and it's impossable to know it all. What is a good systematic approach to become a better process control engineer

2007-07-23 05:15:43 · 2 answers · asked by elimds9 1 in Engineering

There were some exercise books and files in a box. The number of exercise books was twice the number of files. Each time 7 exercise books and 5 files were taken out of the box. After a while, only 30 exercise books were left.
(a) How many files were taken out?
(b) What was the total number of exercise books and files in the box at first?

*Pls do not use algebra to solve the question. thks for all help!

2007-07-23 05:15:33 · 6 answers · asked by evabree 1 in Mathematics

Any1 help with with slope..??

Find the slope of points (-3,2) and (-2,-1)

just tell which are y1,y2 x1 and x2 plz!!

help!!!!!!!

2007-07-23 05:15:06 · 13 answers · asked by Kwan L 2 in Mathematics

2007-07-23 05:09:54 · 2 answers · asked by Anonymous in Chemistry

A 720 ml container holds a mixture of red, yellow, and white paint in a 5 : 3 : 12 ratio. How much more red paint than yellow is present in the mixture?
My Answer:



20 ml.

--------------------------------------------------------------------------------

72 ml.

--------------------------------------------------------------------------------

108 ml.

--------------------------------------------------------------------------------

180 ml.

--------------------------------------------------------------------------------

200 ml.

--------------------------------------------------------------------------------

2007-07-23 05:09:22 · 4 answers · asked by Michael H 1 in Mathematics

Do you think its feasible or feasible soon? If so, do you think it will or should be constructed and when? 15-20 years? Our lifetimes?

http://www.space.com/businesstechnology/technology/space_elevator_020327-1.html

2007-07-23 05:06:00 · 6 answers · asked by Zen Pirate 6 in Astronomy & Space

A designer attempting to arrange the characters of his artwork in the form of a square grid with equal numbers in a row and columns found that 24 characters were left out. When he tried to add one more row and column he found he was short 25 characters. Can you find the number of characters used by the designer?
This is complicated to me please explain how to get a quadratic equation from this and what the number of characters are used by the designer

2007-07-23 05:04:20 · 3 answers · asked by littlesoutherner12 1 in Mathematics

2007-07-23 05:00:26 · 13 answers · asked by Anonymous in Astronomy & Space

2007-07-23 05:00:22 · 4 answers · asked by @_@ 4 in Mathematics

I need to figure out the max load for this ceiling to determine whether I can move my compressor ontop of an existing room in an industrial setting.

2007-07-23 04:59:36 · 4 answers · asked by Anonymous in Engineering

thats an example question... whats X?

2007-07-23 04:59:28 · 7 answers · asked by @_@ 4 in Mathematics

2007-07-23 04:57:38 · 12 answers · asked by Mohit C 1 in Physics

In a race, there are 3 runners named Steve, Terry, and Dick.

Steve takes 2 seconds to reach her maximum speed.
Between 4~6 seconds she goes 15 m/s.
Between 6~7 seconds she slow down a little.
From 7~10 seconds she is running as fast as she was running at the 1st second.

Terry takes 3 seconds to reach his maximum speed.
From 3~5 seconds he runs 20m/s
From 5~7 seconds he slows down.
From 7~10 seconds he is running as fast as he was at two seconds.

Dick takes 10 seconds to reach his maximum speed.
At the 10 second mark he is going at 30 m/s.

If all 3 runners reached their maximum speed or slowed down in a linear fashion, who has ran the the most in the 10 second duration?

2007-07-23 04:57:22 · 2 answers · asked by LIFE HATER 1 in Mathematics