Science & Mathematics - 21 January 2007

do they exist

2007-01-21 09:03:25 · 12 answers · asked by xlin3ix 1 in Zoology

just wondering

2007-01-21 09:03:19 · 2 answers · asked by macgyver 1 in Engineering

if the expentant mother is employed full-time as echocardiography technician?

2007-01-21 09:02:19 · 5 answers · asked by sheba 3 in Medicine

Problem doesn't seem hard, I've just tried to so many times that I'm more confused than when I started. The main equation is at the end with the question. The following info might help.

2 Equations, 5 Variables
c and (q2) are constants
a,b>0
c is an element of (0,a)

1) a-2b(Q1)-(Q2)-c
2) a-2b(Q2)-(Q1)-c

Solved for Q1 = a-2b(Q2)-c

Inserted into eqation 1:

a-2b[Q1]-(Q2)-c

a-2b[a-2b(Q2)-c]-(Q2)-c

The difficulty I'm having is with the following
QUESTION: Now solve for Q2
Then solve for Q1

2007-01-21 09:02:19 · 2 answers · asked by DaveW 2 in Mathematics

A surface with a higher albedo will heat more quickly than one with a lower albedo.

2007-01-21 09:00:37 · 2 answers · asked by Justin 6 in Weather

Cr2O7(valence of -2)(aq)+H2O(l)<->2CrO4(valence of -2)(aq)+2H
Cr2O7 is orange and CrO4 is yellow

2007-01-21 09:00:30 · 2 answers · asked by S 3 in Chemistry

Why is that you cannot break an egg from top to bottom when you hold it between your thumb and forefinger no matter how hard you try

2007-01-21 08:59:32 · 12 answers · asked by zsphodge 1 in Other - Science

Evaluate the integral ( ^ means raise to )

1.) integration of: xe^ -x dx

2.) integration of: t sin 2t dt

2007-01-21 08:59:19 · 2 answers · asked by Charles P 1 in Mathematics

Part 2
if a_1 = 2 and r= 2, what are the first four terms of the geometric sequence?

2007-01-21 08:59:03 · 5 answers · asked by Matthew B 2 in Mathematics

Cr2O7(valence of -2)(aq)+H2O(l)<->2CrO4(valence of -2)(aq)+2H
orange yellow

2007-01-21 08:58:58 · 1 answers · asked by S 3 in Chemistry

why is it that we only start to form memories when we reach the age of about 3 +? why dont we have memories of when we are babies?

2007-01-21 08:57:54 · 10 answers · asked by darkmatter 1 in Chemistry

2007-01-21 08:56:59 · 10 answers · asked by Peter 1 in Biology

the directions say to rationalize the denominator please give m the steps i have the answer

2007-01-21 08:56:55 · 1 answers · asked by brian g 2 in Mathematics

2007-01-21 08:56:09 · 2 answers · asked by lovrascalflatts 2 in Earth Sciences & Geology

2007-01-21 08:52:21 · 3 answers · asked by Lidie C 1 in Biology

2007-01-21 08:50:40 · 3 answers · asked by dewgongoo 2 in Biology

i have an eye project and im stuck on how the eye protects it self and how to protect it ... any help would be of much help even point form.
tnx ahead of time for all answers....

2007-01-21 08:50:36 · 4 answers · asked by k 1 in Biology

how many moles are there in a 0.45 % NaCl solution?

2007-01-21 08:50:23 · 2 answers · asked by ABC 4 in Chemistry

i have 6=lx+1l and i know one other meaning of it is x=5 so what are some others or what is the other one???

2007-01-21 08:50:01 · 6 answers · asked by Mae-Day 3 in Mathematics

How did life begin billions and billions and billions of years ago, and what proof of this beginning is there?

2007-01-21 08:49:57 · 4 answers · asked by ? 3 in Astronomy & Space

2007-01-21 08:48:36 · 5 answers · asked by ??♥ 1 in Physics

simplify the expression: 3e^x / e^3x * e^-2x / 12

Solve: 1/8 = 4^4x-5

Solve for x: 7.43^x = 38

2007-01-21 08:47:50 · 2 answers · asked by Mia16 3 in Mathematics

the solid oil is turned into toxic gas, where there was once oil lubricating the plates there is nothing to prevent earthquakes, volcanos and sunamis caused by a drop in the earths crust...try draining the oil out of your car and see how far you get

2007-01-21 08:47:41 · 5 answers · asked by Anonymous in Earth Sciences & Geology

How will global warming affect air pressure in the atmosphere?
In 50 to 80 years time when it has been predicted the water levels will rise ,how much will the air pressure in the mountains change?

2007-01-21 08:46:19 · 4 answers · asked by strings 1 in Earth Sciences & Geology

I ask of your assistence in my great conundrum of finding a suitable assignement for the field of science. Overall: HELP!

2007-01-21 08:45:18 · 3 answers · asked by ZomToad 2 in Botany

In a population of hamsters, 80% carry the dominant allele (B) for a black coat and 20% carry the recessive allele (b) for a grey coat. What will be the genotypic frequence of the next generation?

2007-01-21 08:44:48 · 1 answers · asked by Mickey mouse 1 in Biology

Find an equation of the parabola with focus (0,-1/8) and directix y=1/8

2007-01-21 08:44:32 · 1 answers · asked by Kevin P 1 in Mathematics

2007-01-21 08:43:21 · 5 answers · asked by Froggiesmiles 3 in Engineering

it says
"use subituion to solve each system of equations. Check each by substituting it in both original equation"

1. a =3-b
4b+ a =15

2. x=2-y
8y+ x =16

3. even suggested solving problem 1 by substuting 3-b for a in the first equation Will evan's method work? explain why or why not.


uhmmcan you tell me how you solved the questions too/ please.

2007-01-21 08:42:57 · 14 answers · asked by christine [ 1 in Mathematics

i have this science project where i have to make a comic in which a protist(amoeba, euglena, ect) and i need something funny to say. here an example.
two amoebas decide thqat they are fat. so
a= i think we should go and get in shape
b- yeah we really should
a= oh wait we cant get in shape since we always change shape.
so yeah i need something kinda like that plz help.

2007-01-21 08:42:55 · 6 answers · asked by jack m 2 in Zoology