Science & Mathematics - 31 October 2006

2006-10-31 08:23:04 · 6 answers · asked by Anonymous in Astronomy & Space

2006-10-31 08:21:39 · 1 answers · asked by Anonymous in Engineering

I've heard they do this if there is a lack of males or females in order to have babies.10 points for the first person to show me a website with proof.

2006-10-31 08:20:36 · 6 answers · asked by romeowithoutajuliet 3 in Zoology

x^2-7x+10

2006-10-31 08:19:57 · 5 answers · asked by Anonymous in Mathematics

Intelligent, stupid, off the wall, unexplainable...
You know.

2006-10-31 08:17:52 · 11 answers · asked by Anonymous in Zoology

A small plane begins its descent. If the plane has an altitude of 4300 feet after 2 minutes and an altitude of 3100 feet after 5 minutes, what is the planes's constant rate of descent? what is the answer

2006-10-31 08:17:28 · 11 answers · asked by Felicia F 1 in Mathematics

A flight attendant pulls her 75.0 N flight bag a distance of 241.0 m along a level airport floor at constant speed. The force she exerts is 438 N at an angle of 66.0° above the horizontal. Find:

The work she does on the flight bag.

The work done by the force of friction on the flight bag.

The coefficient of kinetic friction between the flight bag and the floor.

How would you solve this problem? With what formulas?

2006-10-31 08:15:58 · 4 answers · asked by gunder53534 2 in Physics

2006-10-31 08:15:08 · 29 answers · asked by ☆Marina☆ 3 in Zoology

the diameter of each wheel of the bike is 26 in. if i was traveling at a speed of 35 mi/hr on the bike through how many revolutions per min are the wheels turning?

do i need to use s=r(beta)? and convert the 13in? thanks for the help.

2006-10-31 08:14:22 · 7 answers · asked by shih rips 6 in Mathematics

V = 0.140 L

n = 0.191 mol

T = 30.5 oC


Enter a numeric answer only.

2006-10-31 08:14:05 · 2 answers · asked by simonkf2002 1 in Chemistry

2006-10-31 08:13:40 · 12 answers · asked by Arcesius 1 in Astronomy & Space

I am graphing quadratic equations. The value of x is given.
The value of x is -3.
The equation is y=-x^2-2x
My question is: since the x in the equation is already negitve and when squared is positive than would the value of the original x stay -3.It is like three negitive signs in a row.

2006-10-31 08:13:19 · 5 answers · asked by Neil 1 in Mathematics

A] When resonably dilute HCl and AgNO3 solutions are mixed , a white AgCl precipitate forms, with some heat involved. When a Na2S2O3 solution is added to this reaction mixture, the white precipitate disappears upon stirring.

Is this possible... would you defend it or Refute it? Why?


B] Some chemist say that the AgCl in (A) dissolves. Others say that AgCl is prevented from precipotating further by the prescence of S2O3 (-2) ion.


Is this possible... would you defend it or Refute it? Why?

2006-10-31 08:13:01 · 1 answers · asked by Anonymous in Chemistry

2006-10-31 08:12:51 · 15 answers · asked by jayebird 2 in Astronomy & Space

How do you gain and loose an hour, if there is still 24hours in a day?

And why only in some parts of the world and not others, who decided this?

2006-10-31 08:11:45 · 2 answers · asked by * Deep Thought * 4 in Earth Sciences & Geology

My textbook explains it incredibly disproportionatly. Can anyone please simply explain it to me?

Here's an example problem:
3x - 7y + 5 - 0

2006-10-31 08:10:42 · 5 answers · asked by Ryan 1 in Mathematics

A security camera in a neighborhood bank is mounted on a wall 10 feet above the floor. What angle of depression should be used if the camera is to be directed to a spot 8 feet above the floor and 12 feet from the wall? (In other words, how far down should the camera be tilted?)

2006-10-31 08:09:50 · 6 answers · asked by beachbum 2 in Mathematics

Q=min(16L,20K)

2006-10-31 08:09:36 · 2 answers · asked by pbrowneyes_2004 1 in Mathematics

constant pressure to a temperature of 87.0oC.
What is the final volume of this balloon, in liters?

Enter a numeric answer only.



oC = degrees Celcius

2006-10-31 08:06:49 · 2 answers · asked by simonkf2002 1 in Chemistry

2006-10-31 08:06:04 · 12 answers · asked by glenda trevino 1 in Medicine

boa snakes

2006-10-31 08:05:11 · 2 answers · asked by Anonymous in Zoology

I know someone has thought of this already but is there any evidence or research on this?

2006-10-31 08:04:38 · 10 answers · asked by logisticswizard 1 in Physics

A friend of mine and myself have a bet going. Neither of us know the answer to the question asked above but someone told her that doctors can not check and another said they could. I say they can depending on the prescription. Does anyone know if doctors can check prescriptions that they write? I am talking about a plain old fashioned prescrition that has been written out by hand. I know now they have computer made ones that have tracking numbers etc. I am talking about the actual traditional one that has been written out by hand. Thanks for settling this!

2006-10-31 08:04:02 · 11 answers · asked by Anonymous in Medicine

I bought a chain that looks and tests gold but was told its not real.Its marked 14k gold and tests like gold on an acid tester but its not real .Its also the same color as gold throughout the entire piece.Its not plated,the metal actually tests even if you file into it and it is a yellow/gold colored metal.

2006-10-31 08:01:59 · 1 answers · asked by Frankie D 1 in Chemistry

I need factor trees for the following numbers;

30, 42, 18, 50, 24, 45, 84, 66, 80.

But I'm not good at math.

2006-10-31 08:01:09 · 9 answers · asked by Anonymous in Mathematics

boa snakes

2006-10-31 08:00:07 · 2 answers · asked by Anonymous in Zoology

2006-10-31 07:56:22 · 4 answers · asked by Jeanean B 1 in Geography

2006-10-31 07:56:19 · 3 answers · asked by Mohammed R 1 in Weather

space had computers so they could answer some of these questions

2006-10-31 07:53:59 · 9 answers · asked by Anonymous in Astronomy & Space

or is GOD english speaking?
English is the universal language not by accident, but by design.

"GOD does not play dice with men" -- Albert Einstein

What do you think about this amusing conjecture?
- Please do not give any kind of references.
- You could surmise with your own quote. (Not Borrowed)

2006-10-31 07:53:52 · 15 answers · asked by Anonymous in Physics