Science & Mathematics - 1 October 2007

i believe that the burning of phenol will produce H2O, CO2 & blue flame of diatomic carbon which is the origin of life? these chemicals existed in the pre-evolutionary period of earth.

2007-10-01 09:37:26 · 1 answers · asked by ron.waters 1 in Chemistry

alcohols, ketones....etc I see that there are many different types does this mean that pheromones are its own different family:???

2007-10-01 09:36:15 · 1 answers · asked by Nohart X 1 in Chemistry

please answer me now.

2007-10-01 09:33:19 · 6 answers · asked by Avan23 1 in Earth Sciences & Geology

What is the channel it will air on?
It is a reality show where psychics will compete against each other trying to prove if any of them are actually legit.
I saw a promo that looked rather good but didn't get the channel.
Don't want to miss this for sure.

2007-10-01 09:25:08 · 9 answers · asked by Father Ted 5 in Other - Alternative

2007-10-01 09:24:59 · 3 answers · asked by Kwaria 1 in Biology

please help

2007-10-01 09:23:05 · 4 answers · asked by Anonymous in Mathematics

2007-10-01 09:22:07 · 4 answers · asked by my_nameisbrian 1 in Earth Sciences & Geology

y=1-6 x-6 x^2
at the point (1,-11).

y= x/ (3-x)
at point (0,0)

methods would help drastically

2007-10-01 09:21:51 · 2 answers · asked by Ar J 2 in Mathematics

I can accept that my grandfather was a monkey, but there's no way he was some shrub. I don't need science to tell me that. What is wrong with you people? Just because I had an ancestor in common with G.W. Bush doesn't make you evolutionists right.

2007-10-01 09:19:51 · 17 answers · asked by Anonymous in Biology

2007-10-01 09:17:41 · 7 answers · asked by shadonox 1 in Physics

2007-10-01 09:15:15 · 3 answers · asked by Anonymous in Physics

A farmer has rectangular garden plot surrounded by 488 ft of fence. Find the dimensions of the garden if its area is 12180 sq ft.??

2007-10-01 09:12:58 · 7 answers · asked by Anonymous in Mathematics

My sister and I were observing cows the other day and we got to thinking. Once a year the bull is let into the paddock to breed with the cows. That is kinda cheating because the bull has to get as many cows as he can pregnent. What it one of the cows are a lesbian? Does that cow have to get pregnant by this bull? Does she have a choice?

2007-10-01 09:04:24 · 3 answers · asked by harlm7 2 in Zoology

2007-10-01 09:04:08 · 5 answers · asked by Will 2 in Mathematics

y - intercept (0, 1/2), slope is 3/4.

I thought it would be y= 3/4 x + 3,
but the answer book says
y=3/4 x + 1/2

where did they come up with 1/2 instead of 3?
ahhhhhhhhhhhhhhhhh
thanks

2007-10-01 09:01:14 · 7 answers · asked by Boo Radley 4 in Mathematics

please link me the sites if you found the info from them. tyvm^^

2007-10-01 08:58:15 · 3 answers · asked by Révíán 3 in Zoology

2007-10-01 08:57:33 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-01 08:54:46 · 10 answers · asked by Arun K 1 in Engineering

So I am going to do my best to explain this problem, but feel free to add any variables I may have left out...

A hotel has n elevators and m floors. Each floor has a height of h.

Each elevator travels at some constant velocity v (for convenience let the units of v be ft/s). Assume the elevator does not stop until it reaches you.

Assume that the elevators are on random floors when you push the button, and the CLOSEST elevator travels downward when called from a floor below and upward when called from a floor above.

How many elevators are needed in order for the expected waiting time on the first floor to be 10 seconds?

If you can generalize the problem even more, show me how.

2007-10-01 08:53:30 · 3 answers · asked by whitesox09 7 in Mathematics

Question: Preform the indicated operations

10x^2 -9xy +2y^2
i have no clue what to do but i think it may have something to do with factoring a perfect square trinomial

2007-10-01 08:53:15 · 4 answers · asked by topnoch22 1 in Mathematics

2007-10-01 08:50:50 · 13 answers · asked by itsagirl!! 4 in Astronomy & Space

2007-10-01 08:50:20 · 6 answers · asked by Anonymous in Weather

2007-10-01 08:46:19 · 1 answers · asked by TheElite 3 in Physics

determine, by considering the discriminant, the number of points of intersection with the x axis of the following parabolas

1)y=x^2-7x+3

2)y=5-7x-2x^2

3)y=3x+2x^2

2007-10-01 08:45:12 · 1 answers · asked by Anonymous in Mathematics

A pair of parallel interstate gas and power lines run 10 meters apart
and are equally distant from relay station A. The power company
needs to locate a gas-monitoring point on one of the lines exactly
12 meters from relay station A. Draw a diagram showing the locus of
possible locations.

2007-10-01 08:41:59 · 1 answers · asked by Anonymous in Mathematics

I have progress energy here in Raleigh, NC and they charge $0.10 per kilowatt which is outrageous. They are also a monopoly. I no option to switch electric companies. The home is 2300 square feet and is all electric. No gas appliances. Would it be possible to switch to a generator and just buy gas when needed? If so, how long would it be before I notice the savings?

2007-10-01 08:40:51 · 11 answers · asked by Anonymous in Engineering

2007-10-01 08:35:51 · 3 answers · asked by sarah 2 in Mathematics

Identify the type of transformation given by this rule..

M(x,y)=(x,-y)


and



V(x,y)=(x,y-1)


please help i really dont understand this and i had a substitute teacher today!=[

2007-10-01 08:35:33 · 2 answers · asked by Ally 2 in Mathematics

Where is this function continuous...

h(x)=2x/x-4

2007-10-01 08:33:45 · 4 answers · asked by Anonymous in Mathematics

An 70.0-N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 20.0°to the ground.

(a) The interaction partner of this normal force has what magnitude and direction?
Magnitude ____ N
Direction ___° below the horizontal

(b) What is the static frictional force exerted on the crate by the ramp?
___N

(c) What is the minimum possible value of the coefficient of static friction? ____

(d) The normal and frictional forces are perpendicular components of the contact force exerted on the crate by the ramp. What is the magnitude and direction of the contact force?
Magnitude ____N
Direction ___° above the horizontal

2007-10-01 08:33:15 · 1 answers · asked by Anonymous in Physics