Science & Mathematics - 11 December 2006

2006-12-11 07:35:26 · 9 answers · asked by Anonymous in Chemistry

can someone show me the formulae and working out used plz

does anyone know how to draw a diagram including component values

cheers

2006-12-11 07:34:33 · 3 answers · asked by Anonymous in Engineering

ttpo = to the power of
2x ttpo 1/2 (x ttpo 1/2 - x ttpo -1/2)

Hope you understand that...

2006-12-11 07:33:53 · 4 answers · asked by fabby_abbi 1 in Mathematics

2006-12-11 07:33:37 · 3 answers · asked by phillyfan11 1 in Chemistry

2006-12-11 07:32:23 · 13 answers · asked by Anonymous in Geography

1. How many quarters do you need to make a stack one inch high?
2. The average distance from Earth to the moon is 238,855 miles.
a. If you stacked one million quarters, how high would they reach?
b. Would they reach the moon? If not, how many quarters would reach the moon? Explain how you got your answer.

10 points to the person with the best answer - answer quickly please!

2006-12-11 07:31:58 · 12 answers · asked by Anonymous in Mathematics

If anyone out there on answers works with roadway construction.... What has your experience been?

2006-12-11 07:31:02 · 1 answers · asked by G's Random Thoughts 5 in Engineering

2006-12-11 07:30:47 · 6 answers · asked by Anonymous in Engineering

describe how you would make an aqueous solution of methanol (CH3OH) in which the mole fraction of methanol is 0.40.

2006-12-11 07:30:41 · 1 answers · asked by Anonymous in Chemistry

many of us are aware, durin the cold winter months the low temp. will drop a couple more degrees just as the eastern skyline begins to lighten. it seems to be more noticeable during very cold nights.

2006-12-11 07:28:45 · 5 answers · asked by harlan m 1 in Weather

BaBr2
KBr2
Br2
OBr2
FeBr2

Thanks

2006-12-11 07:28:44 · 4 answers · asked by Captain Whiskerboy Litterbox 3 in Chemistry

I'm not sure if people are pulling my leg when telling me this lol

2006-12-11 07:28:19 · 25 answers · asked by Bruza 17/uk 3 in Other - Science

i need to know about the ingredients of spirit vinegar.

2006-12-11 07:28:08 · 3 answers · asked by sohail a 1 in Chemistry

Will some1 please help me with me HW?

2006-12-11 07:27:57 · 9 answers · asked by blake_footballstar 2 in Mathematics

2006-12-11 07:27:33 · 18 answers · asked by John B 1 in Weather

HaHaHa!

2006-12-11 07:26:24 · 21 answers · asked by Lake Lover 6 in Zoology

I have always been bad at math. and one of my teachers noticed that I freeze up when given a math problem, so she knew why I do so poorly in math. I got a tutor and now my average it a 98%!

2006-12-11 07:25:45 · 4 answers · asked by Anonymous in Mathematics

a) CH3COOH(aq) + NH3(aq) = CH3COO-(aq) + NH4 +(aq)

b) Cu 2+(aq) + 4NH3(aq) = Cu(NH3)42+(aq)

c) BeF2(aq) + 2F-(aq) = BeF4 2-(aq)

d) BF3(g) + (CH3CH2)2O(l) --> (CH3CH2)2OBF3(l)

2006-12-11 07:24:19 · 2 answers · asked by gibna 1 in Chemistry

Monkey, Oliver, pictures, human like

2006-12-11 07:23:28 · 7 answers · asked by morgan4932@sbcglobal.net 2 in Zoology

2006-12-11 07:21:44 · 14 answers · asked by Anonymous in Biology

I have some questions about some calculus problems. If anyone could explain to me how they are done it would be much appreciated:
A) If f(x) = x^3, find an expression for d/dx [f(g(x))].

B) Find dy/dx for sin(xy) = y.

C) Consider the curve given by y^3 + 5x^2y - 18 = 0.
Write an equation for the line tangent to the curve at the point (1,2).

D) If x and y are both differentiable functions of t, and xy = 20, find
x'(t) when y'(t) = 10 and x = 2.

E) Given that t, k, and a are constants, and that f(x) = a - 2kx, find f'(t).

F) If f'(a) does NOT exist, which of the following MUST be true? If false, show an example of a graph where it is false.
1. f(x)is discontinuousat x = a
2. the limit as x-->a of f(x) does not exist
3. f(x) has a vertical tangent at x = a
4. f(x) has a "hole" at x = a
5. none of the above is necessarily true.

Thanks for any help you can give me!!!

2006-12-11 07:21:35 · 2 answers · asked by Studly 2 in Mathematics

An ice cream store gave 5% of its customers free ice cream cones on Sunday. That day they had 480 customers. How many people received free ice cream cones?

2006-12-11 07:21:15 · 10 answers · asked by ♥ 6 in Mathematics

scales?

2006-12-11 07:20:18 · 5 answers · asked by Kevin G 2 in Earth Sciences & Geology

I need to complete a punnett square for biology class and just can't figure it out. I have to fill out a cross concerning human blood and determine the phenotypic ratio for: (AB+-) x (AB+-)

If anyone can complete this it would be a great help.

2006-12-11 07:19:25 · 2 answers · asked by EpDriver 2 in Biology

2006-12-11 07:18:59 · 5 answers · asked by Anonymous in Biology

killed by man-made structures. Why is it that New York City's buildings and other structures have not been built to withstand large earthquakes?

2006-12-11 07:18:40 · 3 answers · asked by Kevin G 2 in Earth Sciences & Geology

One 4 the brainiacs!

2006-12-11 07:18:15 · 7 answers · asked by Anonymous in Mathematics

2006-12-11 07:15:06 · 10 answers · asked by Anonymous in Astronomy & Space

In computing, some problems are considered impossible to parallelize. My intuition tells me that reality acts in a completely parallel manner, but I am not a physicist.

I was wondering if any physicists could answer this question, or point me in the direction of related research (if any exists). As well, I would be interested in research about how systems develop that cannot be made parallel, if reality itself is inherently parallel.

2006-12-11 07:14:03 · 2 answers · asked by Charles Ellis 1 in Physics

TIME SLOWS DOWN WEN U TRAVEL AT D SPEED OF LIGHT, only if our physical age does not increase, then its true ?
einstein said in his theory of relitivity that time slows down if we travell at the speed of light, THE QUESTION WHICH COMES TO MY MIND IS.... its only acceptible if our physical age also slows down and when we travel at the speed of light spending one year in outer space then our physical age should aslo increase one year only, other wise YOU MAY SAY , only your clock slows down at the speed of light ... WHAT DO YOU SAY ?

2006-12-11 07:13:11 · 6 answers · asked by cajohnson667 3 in Physics