Science & Mathematics - 11 October 2007

I suppose it depends on a lot of factors, but just as a rule of thumb, at what range would the soil be fertile enough to support crops - more like 500 yards or more like a mile or two?

2007-10-11 04:50:16 · 10 answers · asked by Skidoo 7 in Geography

How does it use to move forward?

2007-10-11 04:45:34 · 7 answers · asked by Anonymous in Astronomy & Space

Ok here we go

primordial soup givers rise to amino acids, and protein chains and RNA

but hold on, you need RNA to make amino acids and protiens,
so how can amino acids make RNA, when RNA is needed to make them

ok i called this question EVo, When it's abiogenesis really but still, one supports the other as they suport the theory for millions of years...

but for millions of years how did we get amino acids if you need RNA to make them?

and we couldn't get RNA as we had no amino acids..for millions of years?

even if i added another million there we would still be in a period of activation as we lack the RNA and amino acids and therefore the RNA, yup you see where i am coming from

These are the problems you get when you study evolution and
abiogenesis,

i'm sure you must have the same problems too

your answers please

2007-10-11 04:43:16 · 4 answers · asked by Anonymous in Biology

2007-10-11 04:42:22 · 4 answers · asked by Anonymous in Physics

In one book they have given 112/15hrs as 7hrs and 28 min.
How to convert? can any one explain this with a formula. So that it suits to all the problems similar to this.

2007-10-11 04:41:59 · 5 answers · asked by Anonymous in Mathematics

A load of bricks with mass = 15.0 kg hangs from one end of a rope that passes over a small, frictionless pulley. A counterweight of mass m2= 28.0kg is suspended from the other end of the rope, as shown in the figure. The system is released from rest.What is the magnitude of the upward acceleration of the load of bricks?
Take the free fall acceleration to be = 9.80m/s^2 .What is the tension in the rope while the load is moving?
Take the free fall acceleration to be = 9.80m/s^2 .

2007-10-11 04:39:59 · 5 answers · asked by Natiphy2007 1 in Physics

A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 70 cm/s. Find the rate at which the area within the circle is increasing after each of the following. Evaluate your answer numerically.
A. 3 seconds
B. 5 seconds
C. 6 seconds

2007-10-11 04:37:15 · 5 answers · asked by Anonymous in Mathematics

Factor the polynomial completely. If the polynomial is prime, say so.

9bn^3 + 15bn^2 - 14bn

Thanks!

2007-10-11 04:34:29 · 2 answers · asked by Pete 1 in Mathematics

the greater pressure amplitude and by what factor is it greater? B) What is the ratio of their intensities?

2007-10-11 04:34:28 · 2 answers · asked by Karma H 1 in Physics

lim cos(x)/(1-sin(x))^(2/3)
x tends to pi/2
thanks
is it possible for this limit to be ever found using l'hopital rule?

2007-10-11 04:32:34 · 3 answers · asked by Harsh 2 in Mathematics

2007-10-11 04:28:52 · 4 answers · asked by bluemiano 2 in Engineering

please help me i am studying chemistry in a different language that i had just studied for one year and now i am confused.

2007-10-11 04:27:59 · 9 answers · asked by Anonymous in Chemistry

per second? B)At this rate, how long would it take yur eardrum to recieve a total energy of 1.0J? Please show work! Thank you*

2007-10-11 04:26:31 · 1 answers · asked by Karma H 1 in Physics

yes or no

2007-10-11 04:23:05 · 7 answers · asked by onelovetequillia 1 in Mathematics

what is the percentage change in kinetic energy of a sattelite required to make it leave its orbit and escape to infinity.

2007-10-11 04:23:01 · 8 answers · asked by sameerteacher01 1 in Physics

2007-10-11 04:20:35 · 9 answers · asked by jeff f 1 in Mathematics

2007-10-11 04:14:58 · 16 answers · asked by Eileen J 7 in Earth Sciences & Geology

How were we able to determine the size of the milky way? I heard that we have not sent any shuttles or probes that far out so how did we know how many arms it has, the size, and where we are located within the milky way?

2007-10-11 04:11:59 · 7 answers · asked by Krissy 6 in Astronomy & Space

2007-10-11 04:08:30 · 5 answers · asked by jakob.grimm 1 in Mathematics

Hypothetical" Let's say we find a way to send a satellite a decent percent of the speed of light, so that it could reach another star within a human lifetime, and beam back anything interesting it learns. A human going along is out of the question, since you'd need to build something much more massive to keep them alive for the trip, and a return trip isn't really practical, either. Which star are we going to visit?

Proxima Centauri is the closest at 4.22 light years, so we'd hear back the soonest, but it can't be the most interesting star within a reasonable distance. Gliese 876 we know to have at least three planets, and it's only about 15 light years away, so is that the obvious choice?

2007-10-11 04:05:37 · 8 answers · asked by Eli 6 in Astronomy & Space

My teacher asked us to calculate the energy for Red, Blue, and Purple. I'm not sure what to do. =/

2007-10-11 04:00:46 · 1 answers · asked by Vanessa1027 1 in Chemistry

THE ANSWER MUST BE IN INTERVAL NOTATION....

2007-10-11 03:57:52 · 4 answers · asked by jessica r 1 in Mathematics

a balance problem?i know its my equlibrium as im tipsy from time to time without going to a doctor for a prescription?

2007-10-11 03:57:23 · 6 answers · asked by Anonymous in Medicine

A. It transmits genetic information to the next generation.

B. It translates genetic information to make proteins.

C. It provides a form of energy for cells.

D. It speeds up chemical reactions inside of cells.

2007-10-11 03:56:24 · 13 answers · asked by xunsunghero 2 in Biology

2007-10-11 03:56:01 · 5 answers · asked by Dave P 1 in Chemistry

the supposed paranormal barber and medium the last week made a compromisse for find Maddie, somebody know about this? the methode is easy, why take so much time? i think only make publicity, is incredible the people take the chance for publicity with the little girl.

(sorry for my english but i write from germany)

2007-10-11 03:54:21 · 7 answers · asked by Anonymous in Paranormal Phenomena

They live all summer in nice weather then get hit with vey cold weather but it doesn't seem to bother them. Just curious.

2007-10-11 03:53:19 · 4 answers · asked by firsty 2 in Zoology

I have to write a paper on why these bugs are nocturnal.

2007-10-11 03:47:53 · 7 answers · asked by Anonymous in Zoology

please! and if you can show me how i can check the answer! thnx

2007-10-11 03:42:41 · 11 answers · asked by sarah b 1 in Mathematics

i need help for a school project

2007-10-11 03:35:42 · 4 answers · asked by Godess 1 in Zoology