Science & Mathematics - 16 February 2007

1. why planets revolve around the sun in an ellptical path.
2. what is the relation in the average distances between the planets.

2007-02-16 17:31:27 · 10 answers · asked by tej 2 in Physics

This was a question to my beginning chemistry homework and it asks about sig. figs. I kept posting 2 but I kept getting the answer wrong. So is it a different answer or is the problem wrong? Maybe the problem was written incorrectly...

2007-02-16 17:28:47 · 8 answers · asked by ♥ReKa♥ 2 in Mathematics

2007-02-16 17:26:16 · 4 answers · asked by tsnmmerchant 1 in Physics

And stay verticle, irrespective of position of candle.

2007-02-16 17:25:46 · 5 answers · asked by Aizen 3 in Physics

I've heard if you donate blood you can get paid some cash. Is this true?

2007-02-16 17:24:03 · 12 answers · asked by Anonymous in Biology

thanx for the help ^ ^

2007-02-16 17:22:30 · 5 answers · asked by Siela 1 in Mathematics

2007-02-16 17:20:55 · 2 answers · asked by charliefoye 2 in Astronomy & Space

2007-02-16 17:20:30 · 4 answers · asked by sassychickensuckerboy 4 in Physics

do you need to know all the steps of Krebs ceycle in a biology major? Biochemistry major?. Perhaps med school I guess.

2007-02-16 17:16:40 · 7 answers · asked by avalentin911 2 in Biology

out of all things in the world we humans are like the only things with no natural defenses. I mean other things have camoflauge, colossal strenght, crazy speed, giant tusks, horns. We have nothing cool like that. Although we have THE THUMB :-D its not nearly as cool as some other things we could have... i mean an anaconda has like (if i remember correctly) ~5000 muscles where as the tiny human arm has only 5... c'mon, yes the thumb AND human brain is amazing but couldnt we get just another bonus like mor musles or spikes or something? what you guys think about this?

2007-02-16 17:15:13 · 9 answers · asked by Anonymous in Biology

-throughout the steps in cellular respiration. What does it mean when it says 2H+ like
( 2 NADH + 2H+)?
does it mean two hydrogen ions or two electrons?

2007-02-16 17:15:06 · 2 answers · asked by avalentin911 2 in Biology

my eyes turned from blue to hazel(permanetley...naturally)...anyways, i'm wondering how common hazel eyes and the rest are...
thanx!
xao:D

2007-02-16 17:14:38 · 6 answers · asked by Anonymous in Other - Science

2007-02-16 17:13:09 · 14 answers · asked by Realist 1 in Zoology

When doing the Quadratic - Completing the Square...

3x^2 - 5x+4=0
3x^2-5x=-4
then you take the number next to the coefficient , divide it in half, then square it. My question is -5/2 = -2.5 and -2.5 x -2.5 is 6.25. Do I round that to the nearest number, 6 , if it does not come out even?

2007-02-16 17:11:49 · 4 answers · asked by Boo Radley 4 in Mathematics

At a particular temperature, Kp = 0.370 for the reactionN2O4(g) 2NO2(g) A flask containing only N2O4(g) at an initial pressure of 3.20 atm is allowed to reach equilibrium.

Calculate the total pressure in this flask at equilibrium.


Somewhere in this problem i am required to do work with quadratics and i believe thats where im making my mistake, please help..

2007-02-16 17:05:44 · 1 answers · asked by Anonymous in Chemistry

2007-02-16 17:04:13 · 6 answers · asked by Jon B 1 in Engineering

I'm Junior studying civil engineering in Washington state and I am looking for a summer internship. Or a job realated to the field like surveying. Does anybody have any suggestions on where to look? I've applied to some allready but with no luck so far! Thanks

2007-02-16 17:03:00 · 3 answers · asked by jar jar 2 in Engineering

The current entering the upper terminal of an unspecified basic circuit element is

i = 20 cos 5000t Amps

Assume the charge at the upper terminal is zero at the instant the current is passing through its maximum value. Find the expression for q(t).

I know I have to integrate, but I'm not getting the answer the book gave me.

2007-02-16 17:02:25 · 1 answers · asked by Bill459 2 in Engineering

Which of the following is exact power of 4?

a) 4192 b) 2340 c) 4096
How exactly do we know what is the exact power of 4 ??

Can you also tell me how to find out what is the exact power of 3 and 2 ??

2007-02-16 17:02:10 · 3 answers · asked by Kiran 2 in Mathematics

in Drosophila, graybody(G) is dominant over black(g) and normal wings are more dominant over short wings(w). A student performs the following cross: GgWw x ggww. Among the offspring, she finds the following: 115 gray body, normal wings; 27 graybody, short wings. 25 blackbody, normal wings; 120 black body, short wings. Should the student conclude that the genes for body color and wing shape are linked? Explain and present your reasoning.

Thank you guys :D

2007-02-16 16:57:32 · 3 answers · asked by simsadik 1 in Biology

Find intergral between 5 and 1 f(2x-1)dx
if intergral between 9 and 1 f(x)dx = 14

2007-02-16 16:55:48 · 4 answers · asked by gillgill2003 1 in Mathematics

2007-02-16 16:55:35 · 4 answers · asked by Dennis0623 1 in Biology

my couzin emailed this .. any help would be apreciated !

I do have a Bluesky 6.5inch telescope.but every time I look at the star with it,all I see are odd stars and irrating satellites intercepting by views of the nightsky!When I see them(with my telescope),they all blinks green,red,orange,brown and white.Is there something wrong with my $210 telescope I bought?

2007-02-16 16:50:56 · 7 answers · asked by Chef Dane 2 in Astronomy & Space

what conclusion can you make aobut the effect of raising the temperature on the solubility of a gas in a liquid?

&&

what is the effect of pressure on solubility of a gas?

2007-02-16 16:50:27 · 1 answers · asked by kiwi 1 in Chemistry

please provide the link where such picture is given

2007-02-16 16:50:23 · 5 answers · asked by duel1992 1 in Astronomy & Space

pls try to give more information as much as possible and the answer should be sensible

2007-02-16 16:48:09 · 22 answers · asked by rose 2 in Earth Sciences & Geology

2007-02-16 16:44:40 · 4 answers · asked by Anonymous in Mathematics

In a two-dimensional array, X (7, 9), with each element occupying 8 bytes of memory, with the address of the first element X (1, 1)=3000; find the starting address of the element at X (5,8).

Please tell me how to solve this!!

2007-02-16 16:39:24 · 2 answers · asked by Kiran 2 in Mathematics

I have a 9 volt battery and I need to use it to run a 3 volt circuit, and I'm not sure what resistor to use. Also, I have a 6 volt battery that I need to use to run a 3 volt circuit. Does anyone know what color codes of resistors I'm supposed to use for each? Any help is much appreciated.

2007-02-16 16:38:16 · 4 answers · asked by mike_gaerheart 2 in Engineering

If A= 0 0 0 0 1 1 1 1
B= 0 0 1 1 0 0 1 1

C= 0 1 0 1 0 1 0 1

Then find the value of [A U C] U B and express it in decimal. (Ans: 151)

The ans is 151, but i have no clue how to do it, please explain !!

2007-02-16 16:38:04 · 2 answers · asked by Kiran 2 in Mathematics