Science & Mathematics - 18 August 2007

Someone told me that a blown up balloon will not move in a vacuum when the end of it is released. If this is true, how is space travel possible?

2007-08-18 05:13:42 · 9 answers · asked by Gilligan 1 in Astronomy & Space

2007-08-18 05:03:19 · 4 answers · asked by iloveCR7 1 in Chemistry

Please show me how to simplify the above problem.

2007-08-18 05:02:06 · 3 answers · asked by Anonymous in Physics

power factor is the loss factor by the consumers . install a 100 kva transformer and power factor is 0.5 so power utilised is only 50 KW. i.e due to consumer the power selling is losing . so why not KVA meter?

2007-08-18 05:00:16 · 12 answers · asked by venkatcrj 1 in Engineering

We go on about "for ever and ever" into the future, but surely eternity goes back without end too. (In the same way as infinity is omnidirectional)
So no beginning and no end.
What about creation theory? (Is it a theory?)
What about big bang? (and big bird?)

2007-08-18 04:59:21 · 5 answers · asked by eclomaxkiwi 2 in Other - Science

Hello! I am currently 31 weeks pregnant.

I am extremely fair skinned with brown eyes and curly reddish brown hair with light brown through out it.

The father of my child is extremely fair skinned with hazel eyes [usually dirty-green looking] with curly brown hair.

My mother has fair skin, brown eyes and wavy dark brown hair.

The father of my child's mother has a fair complection with brown eyes and pin straight brown hair.

My father has a fair complection, curly brown hair and brown eyes.

My child's father's father has an extremely fair complection with curly red hair and I am uncertain of his eye color.

Everyone in my family other than my Grandfather before that has blue or green eyes and varying hair color and types.

I am assuming since my child is caucasian he will be be born with blue or green eyes. Can anyone tell me, statistically [I understand you cannot tell me what is certain..] what my child might look like?

THANKS!

2007-08-18 04:58:33 · 1 answers · asked by Anonymous Person 2 in Other - Science

No dots just orange. It was on My mirrow in the bath room.

2007-08-18 04:58:09 · 3 answers · asked by B G 1 in Zoology

When 2 elements bond together?
e.g. Oxgen and Magnesium bond together what is the name of this reaction?

2007-08-18 04:43:26 · 8 answers · asked by Anonymous in Chemistry

With the current technology, human can only observe how the universe looked like in the past. Will human ever be able to observe what's going on right now in the far reaching cosmos?

2007-08-18 04:40:20 · 11 answers · asked by John 1 in Astronomy & Space

2007-08-18 04:33:15 · 1 answers · asked by Kraznik 1 in Earth Sciences & Geology

Please Show How U Did Them

2007-08-18 04:29:45 · 8 answers · asked by Anonymous in Mathematics

I NEED 3 EXAMPLES OF EACH.

2007-08-18 04:29:23 · 1 answers · asked by LILREDGAL 1 in Biology

120-volt resedentials

2007-08-18 04:21:06 · 3 answers · asked by Anonymous in Engineering

2007-08-18 04:15:15 · 5 answers · asked by Petroleum 1 in Chemistry

can be rectangular or square, doesn't matter

2007-08-18 03:54:33 · 7 answers · asked by Anonymous in Mathematics

how?

2007-08-18 03:52:35 · 8 answers · asked by Michael 2 in Mathematics

2007-08-18 03:50:05 · 5 answers · asked by yashvardhan s 1 in Astronomy & Space

2007-08-18 03:45:29 · 6 answers · asked by Anonymous in Zoology

I'm having a trouble solving these two problems on my calculus summer assignment:

simplify: [ (1/x) - (1/5) ] / [ (1/(x^2)) - (1/25) ]

rationalize the denominator: 1 / ( 1 + √3 - √5 )

Please provide an explanation on how to approach and solve the problems... Thank you.

2007-08-18 03:44:01 · 2 answers · asked by senseless.student 1 in Mathematics

Hey have fun with this please...and remember, if yu go back and change something you may not be born to travel back and change things...

2007-08-18 03:35:58 · 11 answers · asked by bruce b 3 in Physics

Find ||v||.

(1) v = -6i + 12j + 4k

(2) v = - i - j + k

2007-08-18 03:35:04 · 2 answers · asked by journey 1 in Mathematics

The vector v has the initial point P and the terminal Point Q.
Write v in the form ai + bj + ck; that is, find its position vector.

(1) P = (0, 0, 0); Q = (-3, -5, 4)

(2) P = (-1, 4, -2); Q = (6, 2, 2)

2007-08-18 03:32:34 · 4 answers · asked by journey 1 in Mathematics

should be five words and should be only one cause.

2007-08-18 03:31:03 · 13 answers · asked by JMdipto 3 in Earth Sciences & Geology

1.What do the elements in a group have the same number of?
a. electrons
b.occupied energy levels or shells
c.electrons in the highest occupied energy level or outer shell.

and also if you know.

2. What do the elements in a peroid have the same number of?
a. electrons
b.occupied energy levels or shells
c. electrons in the highest occupied energy level or outer shell.


Please explain the answer because i want to understand it
THANK YOU.

2007-08-18 03:30:15 · 7 answers · asked by Anonymous in Chemistry

Find the distance from P1 to P2.

(1) P1 = (0, 0, 0) and P2 = (1, -2, 3)

(2) P1 = (-2, 2, 3) and P2 = (4, 0, -3)

2007-08-18 03:29:42 · 4 answers · asked by journey 1 in Mathematics

I understand that there are roughly 2.5 millibars to 1" water gauge and that there are 1000 millibar to a bar. I understand that my gas pressure comes in to my house at 21 mbar and that this gas has been broken down by a piece of equipment from 2 bar of gas. But how does atmospheric pressure work. At the end of the weather each day they mention that the pressure in the air is for example 1080mb. how does that effect the day or the weather or what???????????

2007-08-18 03:29:11 · 5 answers · asked by Anonymous in Weather

is it because of choice of axes is made by us or is it related to wave function?

2007-08-18 03:27:28 · 2 answers · asked by mathiphy 2 in Chemistry

2007-08-18 03:13:42 · 1 answers · asked by Ronald C 1 in Physics

Men are known for their practicality they are, when it comes to empting their bladder.
I stated this in a former question:



"Recently, I read on this board about a guy who was asking if it was okay to urinate in the kitchen sink.

I wonder if there are even odder places where it has occurred to men to expel the TOXIC RESIDUES OF THEIR KIDNEYS."



Is this correct? (Mainly the last line?)

2007-08-18 03:02:24 · 10 answers · asked by Anonymous in Medicine

Solve for y. x + 3y = 12

Graph the inequality.
x – y > 2 Is this question asking me to make a straight line with the shaded circle.

2007-08-18 02:55:59 · 4 answers · asked by Anonymous in Mathematics