English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

Science & Mathematics - 29 November 2006

[Selected]: All categories Science & Mathematics

Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

2006-11-29 05:38:34 · 10 answers · asked by shaun w 1 in Engineering

Can i get the steps for solving?

[H30+] = 1.0 x 10 -4M

[H30+] = 3.0 x 10 -9 M

2006-11-29 05:37:16 · 3 answers · asked by chemistrymagic 1 in Chemistry

x²+8x+7

I know the common factors are 1 and 7. My book says to rewrite bx: 8x = x+7x. Why did it chose that term, and how do how do I rewrite it?

2006-11-29 05:34:44 · 5 answers · asked by Titainsrule 4 in Mathematics

U(r) = A [ [e^((R-r)/s) - 1]^2 - 1]

with r=distance between two atoms
and A, R, s are positive constants with s<
Find the equilibrium separation R0 at which U(R) is minimum.

2006-11-29 05:34:12 · 2 answers · asked by eeje2003 1 in Physics

I feel like I was suppose to learn this in 8th grade, now I'm a fifth year undergrad and still confused, the equation I'm trying to flip is:

y=(1/sqrt(x)) * e^-x

2006-11-29 05:34:11 · 3 answers · asked by akenaton 2 in Mathematics

I want to know as much as possible about what would happen physically i.e. to skin, internal organs, eyes, ears, limbs, bones etc

2006-11-29 05:33:31 · 11 answers · asked by ELIZABETH C 1 in Biology

Show that:
(2a – 1)² - (2b – 1)² = 4(a – b)(a + b – 1)

2006-11-29 05:33:17 · 5 answers · asked by mbchelsea 1 in Mathematics

2006-11-29 05:31:56 · 24 answers · asked by zackariah_8 1 in Astronomy & Space

Tell an armstrong number that you may know.
eg. 153 = (1*1*1) + (5*5*5) + (3*3*3) = 1 + 125 + 27 = 153
no matter on the number of digits in the number.
aint it a tough one.

2006-11-29 05:31:40 · 4 answers · asked by prankstir 1 in Mathematics

3

Julie throws a fair red dice once and a fair blue dice once.
Calculate the probability that Julie gets a six on both the red dice and blue dice.
Secondly, calculate the probability that Julie gets at least one six.

2006-11-29 05:28:44 · 5 answers · asked by mbchelsea 1 in Mathematics

2006-11-29 05:26:48 · 3 answers · asked by moooona1987 2 in Mathematics

2006-11-29 05:25:34 · 13 answers · asked by jon doe 1 in Mathematics

Does the crescent moon have a different orientation in different parts of the world. i.e does it look on its side or upright at different latitudes of the earth.

2006-11-29 05:24:18 · 5 answers · asked by As You Like It 4 in Earth Sciences & Geology

A block of ice maintains the shape of a cube as it melts at the constant rate of 3 cubic inches per minute. Find the rate at which the surface area of the cube is changing when the side of the cube is 12 inches long. Hint: Recall that a cube has six faces.

Please show all work.

2006-11-29 05:21:11 · 5 answers · asked by Anonymous in Mathematics

2006-11-29 05:21:07 · 3 answers · asked by coconut 1 in Medicine

6

2006-11-29 05:20:08 · 12 answers · asked by Anonymous in Mathematics

A particular engine has a power output of 5.00 kW and an efficiency of 20.0%. Assume the engine expels 6000 J of energy in each cycle.
(a) Find the energy absorbed in each cycle.

Your answer differs from the correct answer by 10% to 100%. kJ
(b) Find the time required to complete each cycle.
s

2006-11-29 05:19:43 · 1 answers · asked by activegirl 1 in Physics

2006-11-29 05:17:50 · 2 answers · asked by frickenawesomekoreanandyouknowit 2 in Chemistry

These are two seperate question. Please help and explain.

2006-11-29 05:17:48 · 3 answers · asked by Dave 1 in Mathematics

Show a lot of work please.

2006-11-29 05:17:44 · 2 answers · asked by Anonymous in Mathematics

2006-11-29 05:17:23 · 2 answers · asked by Randy W 1 in Chemistry

With what volume of 5.00 M HF will 6.44 g of calcium hydroxide react completely, according to the reaction

2HF+ Ca(OH)2= CaF2 + 2H2O

2006-11-29 05:16:32 · 1 answers · asked by kenny b 1 in Chemistry

2006-11-29 05:11:27 · 8 answers · asked by manpioper 1 in Zoology

how do you evaluate...

ln (1/e)^9

and

log(.01)^(1/3)

2006-11-29 05:11:12 · 8 answers · asked by puffer fish 5 in Mathematics

2006-11-29 05:09:42 · 3 answers · asked by shaun w 1 in Engineering

solve the following system
x-2y+3z+=9
-x+3y =-4
2x-5y+5z=17

2006-11-29 05:08:57 · 4 answers · asked by montoya162001 1 in Mathematics

fedest.com, questions and answers