Science & Mathematics - 10 September 2007

How can I factor this?

2007-09-10 08:11:51 · 5 answers · asked by vietx69 2 in Mathematics

I need to find one plant and one animal that can only be found in a deciduous forest.
Anybody know?
Also, what are two different organisms that compete for the same resources in this biome?

2007-09-10 08:11:26 · 6 answers · asked by Anonymous in Earth Sciences & Geology

2007-09-10 08:10:13 · 10 answers · asked by virtualparticle22 2 in Astronomy & Space

I've been having very strange problems with my phone where the other party would start hearing my voice in a jittery and cracked way, typically around 6-7 minutes into the call, it will then go away and come back after few more moments.
I've changes everything including my voice service provider and it still happening.
I've been working now with plan phone (non cordless) and it seems that it solve the problem, but now I need to find the source of the electro magnetic interference. How do I do it?

2007-09-10 08:07:29 · 4 answers · asked by asphodel_yoya 2 in Engineering

Imagine you and a friend are standing on the equator, 90 degrees apart, with you in Kansas and your friend near Hawaii. You both start walking in a straight line, north.

You notice that the further north you go, the closer you and your friend are. Its as if there is a force acting between you two, pulling you two together.

Is there really a need for a force carrying particle (a graviton I think its called) to attract 2 bodies? So why do they think there is one, other than it being a cosmetic issue for the standard model? Same goes for looking for gravity waves.

2007-09-10 08:06:46 · 4 answers · asked by Anonymous in Physics

2007-09-10 08:05:08 · 14 answers · asked by Anonymous in Astronomy & Space

i really do not get percentages, will some one explain them to me?!?

2007-09-10 08:00:53 · 9 answers · asked by unbreakablexxx3 2 in Mathematics

Even a message containing one short string of increasing prime numbers would be all the proof required to say that only an intelligent life form could have produced the message, right? I would agree.

But then what about DNA? Stay with me - even Amoebas - one of the most primitive single celled organisms which would have been among the first life forms on this planet - contain vast quantities of information in their DNA.

Each amoeba in it's cell nucleus contains enough information to fill a 30 volume set of the Encyclopedia Britannica. And this information is all specific instructions on how the ameoba can live, eat, and replicate itself.

How did this happen? Couldn't this be a message from our maker? Proof of an intelligent designer? Why or why not?

2007-09-10 07:54:47 · 10 answers · asked by Anonymous in Astronomy & Space

a farmer wants to irrigatre her land in 9 hrs. the area of her field is 25 acres. she grows alfalfa that requires 3 inches of water during the 9hrs. at what flow rate should she pump the water? provide answer in gal/min.

i converted acres and inches to feet to determine the volume and then converted that into gallons. the part that is confusing me is to figure out the flow rate.

2007-09-10 07:54:26 · 5 answers · asked by ♡♥EM♡♥ 4 in Engineering

I wanted to know, if I had to drill for a hot spring, what is the average depth I'd have to go before I had any chance of hitting a hot spring under a property? Looking at moving to Reno, NV. There seems to be quite a few hot springs in Nevada, most in all of America..

2007-09-10 07:51:45 · 6 answers · asked by Albert Y 1 in Earth Sciences & Geology

1) 440 m/s
2) 4400 m/s
3) 44 m/s
4) 4.4 m/s
(cp / cv=Gamma=1.4)

Please show me ... how to solve

2007-09-10 07:42:35 · 4 answers · asked by Anonymous in Physics

We're presently expanding our embroidery and print business. The area we are running the business from only has 1 phase, but the machines (2 of them) we want to purchase run on 3 phase. These machines are fairly big and I was wondering if there are generators that would be powerful enough to run these machines. 3φ 200V~415V. Whats the rough cost of such generators. Thanks a million!!

2007-09-10 07:42:08 · 6 answers · asked by davideac 1 in Engineering

-1/3|2x+7|=2


its a abolsute value question help!

2007-09-10 07:40:27 · 5 answers · asked by Kwan L 2 in Mathematics

2007-09-10 07:33:45 · 6 answers · asked by Anonymous in Biology

a. integers
b. rational
c. irrational
d. reals

2007-09-10 07:33:43 · 10 answers · asked by XxVaneSsaXx214 3 in Mathematics

2007-09-10 07:30:04 · 4 answers · asked by brandie s 1 in Astronomy & Space

Suppose also that the protons are placed at the Earth's North Pole and the electrons are placed at the South Pole. What is the resulting compressional force on the Earth?
The answer should be in Newtons

2007-09-10 07:28:40 · 3 answers · asked by ferrari2388 1 in Physics

2007-09-10 07:26:38 · 7 answers · asked by Anonymous in Mathematics

I think doctors would be the one. What about you?

2007-09-10 07:22:20 · 12 answers · asked by D B 6 in Medicine

energy by way of wind force while driving a car? Could you somehow use small wid turbines to run your engine after enough speed.? Is there any one trying to do this sort of thing?

2007-09-10 07:22:18 · 5 answers · asked by Anonymous in Physics

I'm confused and don't understand.

2007-09-10 07:20:40 · 4 answers · asked by Annabanana 1 in Mathematics

Does the orbit of the Earth remain at a constant distance from the Sun, or is it changing. I was just reading another answer to a question that said that the Earth is gaining mass from collecting space debris.

Well if that is true, and we look at the equation for gravitation then it seems as though the radius of the orbit would be changing. Probably a very small amount though.

Fg=G * M1M2/R^2

2007-09-10 07:15:23 · 7 answers · asked by Anonymous in Astronomy & Space

i had to ask=)

2007-09-10 07:12:32 · 2 answers · asked by Anonymous in Other - Science

A firefighter with a weight of 712 N slides down a vertical pole with an acceleration of 3.00 m/s^2, directed downward. What are the magnitudes and directions of the vertical forces (a) on the firefighter from the pole and (b) on the pole from the firefighter? Show your work and good luck. Thanks!

2007-09-10 07:12:28 · 1 answers · asked by Anonymous in Physics

2007-09-10 07:10:18 · 9 answers · asked by umashankar 1 in Mathematics

h(x)=x^(1/2) + (x+1)/(x-1) + 3x

2007-09-10 07:07:30 · 5 answers · asked by jducksgolf 2 in Mathematics

Even if psychics had a hit rate of only 20%, 5-10 search teams could have been sent out to specific locations and it's likely that one of them would have found him real quick.

For those who don't know, Steve Fossett is an adventurer and pilot that recently went missing in his plane in the Nevada area. He set the record for the longest non-stop solo flight.

2007-09-10 06:57:20 · 18 answers · asked by John 7 in Parapsychology

1. A helicopter blade is designed to rotate at such an angular velocity that the tip of the blade is less than the speed of sound in air, which is 340 ms-1. The blades rotate at 260 r.p.m Calculate the maximum possible length of the blades.

2. A Cd player varies the rate of rotation of the dics in order to keep the track from which the music is being reproduced moving at a constant linear speed of 1.30ms-1. Clacutae the rates of rotation of a 12.0 cm disc when the music is being read from
(a) the outer edge of the disc
(b) a point 2.55cm from the centre of the disc.
Give answers in rads-1 and in rev min-1

2007-09-10 06:55:39 · 2 answers · asked by Anonymous in Physics

do you think it is worthwhile to spend a great deal of money on launching satellites and people into space or do you think the money is wasted? i want to know your thoughts on this question?

2007-09-10 06:53:17 · 7 answers · asked by princess 2 in Astronomy & Space

i need help solving this problem
A) Draw a catter plot (already got that one)
B) Use two pairs to write a prediction equation
C) Use your prediction equation to predict the missing side

This is the table
x ,y
1 ,1
3 ,5
4, 7
6,11
7,12
8,15
10,?

2007-09-10 06:51:50 · 3 answers · asked by Qamb 1 in Mathematics