Science & Mathematics - 30 January 2007

a -7.0 µC and a +6.0 µC charge 5.0 cm apart? Assume no other charges are nearby.

The choices for the direction answer are:
a.) toward the positive charge
b.) perpendicular to the line between the charges
c.) toward the negative charge
d.) none of these

Please help. Thanks.

2007-01-30 08:28:29 · 3 answers · asked by abc123 1 in Physics

all rows, columns, diagonals add up to the same number in a magical square.

once you find the initial perfect square, show the proof that the inverse is still indeed a magical square. Answers that just sum every row, column, and diagonal will not get the best answer. Best of luck, at the end of the question if its not answered I will post the correct solution.

2007-01-30 08:27:44 · 1 answers · asked by jquigg09 2 in Mathematics

A manufacture produces integrated circuit amplifier modules that have voltage gains, which vary from 12,000 to 24,000 due to production tolerances. If the modules are to be used with 5 percent neg feedback applied , determine the min and max values of voltage gain

2007-01-30 08:26:42 · 2 answers · asked by servalan 1 in Engineering

2007-01-30 08:26:25 · 3 answers · asked by Brian S 2 in Weather

2007-01-30 08:25:45 · 9 answers · asked by denise c 1 in Geography

an astronaut? an actor? What? and why?

2007-01-30 08:22:54 · 3 answers · asked by Anonymous in Astronomy & Space

2007-01-30 08:21:20 · 6 answers · asked by chocoholic23511 3 in Physics

2007-01-30 08:20:22 · 6 answers · asked by Anonymous in Mathematics

Just wondering.

2007-01-30 08:19:47 · 6 answers · asked by Barbara V 4 in Medicine

Ok, so I have to come up with a procedure for a lab that i have to do tomorrow. in this lab, i have to find the following: (for 10ml. of water)
1. Mass
2. How many moles
3. The number of molecules.

So, I think i have part 1. to find the mass which would be: to measure an empty graduated cylinder, fill it with 10 ml. of water, and measure it then, then subtract to find mass.

But, after that I comprehend very little on what to do with the rest.
Part 2, i thought I was told i would have to use the mass, but, i have no idea how to do it, and also how to find out how many moles.
and part three, I have no idea
So, my question would be, can you verify that Part one is the correct way to do it, and please help me with parts two and three. thanks.

2007-01-30 08:19:35 · 5 answers · asked by nicolemoose91 2 in Chemistry

are there telekinetic real people out there ? if yes post some videos on youtube !

2007-01-30 08:19:11 · 4 answers · asked by scientific_boy3434 5 in Paranormal Phenomena

I have always called them "Pollywogs", some people are like "HUH" when I call them that! Just curious.

2007-01-30 08:18:01 · 6 answers · asked by PegBundyWannabe 5 in Zoology

hawaii...cold and a bit rainy with random huge bursts of kona winds :(

2007-01-30 08:16:17 · 6 answers · asked by mz dee 6 in Weather

For a certain 3-digit number, inter-changing the first and last digits gives a 3-digit number 297 less than the original number. Doubling the first and last digits of the original number gives a 3-digit number and increases the sum of the digits to 15. What is the number?

2007-01-30 08:15:49 · 5 answers · asked by abs of steel 3 in Mathematics

Ok, I'm having trouble understanding y-y1=m(x-x1). I have two problems I can't complete and your help is appreciated!!

Find an equation of the line that passes through the point and has the indicated slope.

(4,0) m= -1/3
and
(6,-1) m=undefined

please provide steps so that I can learn how to do these...thanks a million!!!

2007-01-30 08:14:02 · 5 answers · asked by C K 3 in Mathematics

2007-01-30 08:13:21 · 4 answers · asked by momoftwins1986 1 in Mathematics

Here's the entire problem:
A proton is released in a uniform electric field, and it experiences an electric force of 5.8 X 10 ^ (-14) N toward the south. What is the direction of the electric field? The possible answers are:

a.) toward the north
b.) toward the south
c.) toward the east
d.) toward the west

Which one is it? (If you can, also explain why you chose that answer.) Thanks for your help!

2007-01-30 08:09:32 · 3 answers · asked by abc123 1 in Physics

thanks

2007-01-30 08:08:53 · 2 answers · asked by amir_in_london 2 in Physics

2007-01-30 08:08:00 · 3 answers · asked by Anonymous in Astronomy & Space

What are 5 non-living thingsin the ocean
(not including dead fish, garbage, sunken ships or treasure)
*its for a science project that i have to make a diorama*

2007-01-30 08:07:53 · 9 answers · asked by Mo 2 in Biology

2007-01-30 08:06:36 · 5 answers · asked by mrynsa 1 in Earth Sciences & Geology

I need help with this problem:
4
----
12
-
6
----
4
----------



Can you show me HOW you did it? Thank you

2007-01-30 08:06:33 · 4 answers · asked by ? 3 in Mathematics

2007-01-30 08:06:22 · 4 answers · asked by donielle 7 in Earth Sciences & Geology

2007-01-30 08:06:02 · 1 answers · asked by pssmyth 1 in Zoology

2007-01-30 08:05:48 · 1 answers · asked by donielle 7 in Earth Sciences & Geology

2007-01-30 08:05:16 · 1 answers · asked by donielle 7 in Earth Sciences & Geology

2007-01-30 08:05:02 · 4 answers · asked by rappernana13 1 in Mathematics

2007-01-30 08:04:50 · 1 answers · asked by donielle 7 in Earth Sciences & Geology

"In this lab, a graph of acceleration versus applied force is to be found. Wh would you expect this graph to be linear?"

Why? Because as you apply the force it will accelerate because F=m/a?

2007-01-30 08:04:43 · 3 answers · asked by Anonymous in Physics

2007-01-30 08:04:12 · 1 answers · asked by donielle 7 in Earth Sciences & Geology