Science & Mathematics - 30 August 2007

Two point charges are placed on the x-axis as follows: one positive charge q1= 4.01 nC is located to the right of the origin at .204m. And a second positive charge q2= 4.97 nC is located to the left of the origin at -.302m

What is the total force (magnitude and direction) exerted by these two charges on a negative point charge q3= -5.99 nC that is placed at the origin.

I keep getting 2.25 or 2.26 N but the computer says its not right . What am I doing wrong?

2007-08-30 11:21:09 · 3 answers · asked by frozenlint 2 in Physics

I already know that we see only one face of the moon during it's circular movement around the earth, but it would have a rotational movement around itself only when the axis of rotation passes through it .as if I rotate a small ball a round my finger, only one side of the ball is facing my finger while the ball is making circular movement around the finger without any rotational movement around it's own axis.
and if we supposed that the earth has stopped it's revolution around itself, then only one face of it will always face the sun independent of its continuous rotation around the sun.
now,if we supposed the sun as the fixed reference point ,and if the moon is making a one revolution around its own axis within one month, and further if someone on the earth is looking to a point on the moon on the 1st day of the month, then ,after two weeks this point will be on the other side of the moon because it would make a half revolution around itself, while we see only one face!

2007-08-30 11:17:36 · 7 answers · asked by PowerX 2 in Astronomy & Space

i really need help with this problem. Im a real dummie when it comes to math! I would really appreciate it.

2007-08-30 11:17:31 · 9 answers · asked by Tabitha B 1 in Mathematics

2007-08-30 11:14:11 · 2 answers · asked by bdgurl5388 1 in Mathematics

2007-08-30 11:13:07 · 11 answers · asked by ike 3 in Mathematics

2007-08-30 11:12:53 · 9 answers · asked by Anonymous in Mathematics

(3-2 √7)(3+2 √7)

2007-08-30 11:12:04 · 9 answers · asked by Anonymous in Mathematics

93.0 x 10^6 in scientific notation?

What are more variations?

2007-08-30 11:09:32 · 9 answers · asked by Rain King 2 in Mathematics

I can't learn as fast as others.

2007-08-30 11:08:57 · 9 answers · asked by passmore94 1 in Mathematics

2 squareroot 121+a small 3squareroot 27+square root 144

ohh...and how do you find slope??

2007-08-30 11:08:55 · 2 answers · asked by lalalala (: 3 in Mathematics

when multiplying complex number problems, is it best to change the i or -i or i^2 at the very beginning, in the original problem, or at the end when you get the answer?
ex- ( 2 - i^2) * (-3 - i^2)
would i do(2 * -3) + (2 * -i^2) + (-i^2 * -3) + (-i^2 * -i^2)
-6 + -2i^2 + 3i^2 + i^4

thanks

2007-08-30 11:07:15 · 7 answers · asked by Boo Radley 4 in Mathematics

What action will you take to do this?........... Show all work...... And check.... thanx =)

2007-08-30 11:06:31 · 7 answers · asked by Mia O 1 in Mathematics

what is a minuend and diffrence and subtrahend?? I need Help, its for math!! PLZZZZZZZz

2007-08-30 11:03:48 · 5 answers · asked by eViE 2 in Mathematics

can i see them! thanks!

2007-08-30 11:01:53 · 1 answers · asked by ♥snapple♥ 1 in Astronomy & Space

I already know that we see only one face of the moon during it's circular movement around the earth, but it would have a rotational movement around itself only when the axis of rotation passes through it .as if I rotate a small ball a round my finger, only one side of the ball is facing my finger while the ball is making circular movement around the finger without any rotational movement around it's own axis.
and if we supposed that the earth has stopped it's revolution around itself, then only one face of it will always face the sun independent of its continuous rotation around the sun.
now,if we supposed the sun as the fixed reference point ,and if the moon is making a one revolution around its own axis within one month, and further if someone on the earth is looking to a point on the moon on the 1st day of the month, then ,after two weeks this point will be on the other side of the moon because it would make a half revolution around itself, while we see only one face!

2007-08-30 11:01:16 · 2 answers · asked by PowerX 2 in Astronomy & Space

I'm doing a report about global warming for world geography and there's a part where we have to tell how it's caused by humans & how it isn't! please help and please use the source! I have to tell him what sites I got this from!! & no i cant use y!a

2007-08-30 10:59:00 · 2 answers · asked by lose_it 4 in Geography

2007-08-30 10:55:38 · 4 answers · asked by gavrix27 1 in Physics

How would you simplify and give the answer in simplest radical form?:

sqrt means square root

sqrt(75)/sqrt(3)

2007-08-30 10:52:50 · 4 answers · asked by Anonymous in Mathematics

I was wondering how to do a couple problems and i try doing them but i get lost! Somebody help me please with steps. Thank you :)

The first problem is 8(3-m)+7=47 i distrubited but i get some weird answer like 8m=33 what did i do wrong??

These are prolly easy but i dont get it i hate math!

A=lm slove for L

and last problem

0.7(2+x) > 1.1x + 5.75

2007-08-30 10:52:10 · 5 answers · asked by JoJo 1 in Mathematics

2007-08-30 10:51:16 · 7 answers · asked by kanayo c 1 in Mathematics

when I solve a problem like sin(tan^(-1) -3/7) , my calculator should be set in radian mode, not degrees, right?

2007-08-30 10:50:03 · 2 answers · asked by odonata 2 in Mathematics

could any one work this out for me and show the work. i need it really badly....

problem: 31C25 X 15C10 / 46C35

PLEASE HELP ME!!!!!

2007-08-30 10:45:08 · 6 answers · asked by johnsondonavon 1 in Mathematics

ok I'm a Sr. in High School in a Calculus AP class but this is just review.. help me!
(absolute value)

1. |x|²-6|x|+8=0


2.|x|³-2|x|²-3|x|=0

thx!

2007-08-30 10:42:29 · 1 answers · asked by Katie 4 in Mathematics

okayyy.
limits.

idk how to figure this out.


lim csc x
x --> pi -

(not negative pi, but pi from the leftt!)
anyone know?

2007-08-30 10:39:45 · 3 answers · asked by Kat 2 in Mathematics

The array shows the first four rows of the triangle attributed to the French mathematician Blaise Pascal. Study the triangle and determine the entries in the tenth row.
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
"Algebra Problems One Step Beyond" by Reuben Schadler

2007-08-30 10:38:36 · 8 answers · asked by baonam02 2 in Mathematics

What is the easiest method for solving trigonometric equations?

I have two questions below. I am looking for the easiest method to apply. As you answer the two questions, please show me step by step what you are doing.

(1) Give the general solution to 2cos2x + 1 = 0

NOTE: For question (1), by "general solution" the author means to include the term 2kpi with each value found for x, where k = any integer.

(2) Give all solutions to the equation 2cos^2(3x) - 1 = 0 on the interval [0, 2pi).

Thanks

2007-08-30 10:35:36 · 1 answers · asked by journey 1 in Mathematics

Was the Singularity a Quantum Egg? I believe that it was. Could it be that ALL life is just a parallel quantum duality, a universe unto itself? The universe got its start from submicroscopic quantum effects that resulted in an occurrence and sudden expansion along with a number of transition phase changes that accumulated in the universe we know today. Think about the evolution of your own life in the same sense. We all came from a microscopic happening---fertilization. We emerged through many physical phase transitions to become the people we are today. Interesting enough, the basic information about the essences of our being was in that embryo shortly after fertilization. Just like the essences of our universe was in those quantum effects at the moment of the big-bang. I believe that both lines of transitional phase linkages are traceable back to events at the singularity. Could our lives and our universe be explainable in some definite unitifed fashion?

2007-08-30 10:31:09 · 3 answers · asked by Bob D1 7 in Astronomy & Space

QUESTIONS:

(1) What exactly is an angle of depression?

(2) I have a trig question to solve and it is:

Find all solutions of the trig equation below in the interval
[0, 2pi).

sqrt{3}cos3x - 1 = 0

2007-08-30 10:30:23 · 1 answers · asked by journey 1 in Mathematics

Math help!!!

2007-08-30 10:30:20 · 12 answers · asked by amecheer7 1 in Mathematics

Was the Singularity a Quantum Egg? I believe that it was. Could it be that ALL life is just a parallel quantum duality, a universe unto itself? The universe got its start from submicroscopic quantum effects that resulted in an occurrence and sudden expansion along with a number of transition phase changes that accumulated in the universe we know today. Think about the evolution of your own life in the same sense. We all came from a microscopic happening---fertilization. We emerged through many physical phase transitions to become the people we are today. Interesting enough, the basic information about the essences of our being was in that embryo shortly after fertilization. Just like the essences of our universe was in those quantum effects at the moment of the big-bang. I believe that both lines of transitional phase linkages are traceable back to events at the singularity. Could our lives and our universe be explainable in some definite unitifed fashion?

2007-08-30 10:30:12 · 1 answers · asked by Bob D1 7 in Physics