Science & Mathematics - 7 September 2007

2007-09-07 19:56:43 · 3 answers · asked by gangster 1 in Engineering

2007-09-07 19:56:07 · 3 answers · asked by Anonymous in Chemistry

I was trying to convert 174 lbs to kilograms and if in every pound there is 2.2 kg's then why do we not multiply 174 by 2.2kg. But we divide. Since the ratio is 1lb/2.2 kg = 174lb/ x kg. We can cross multiply 174 by 2.2 to get the answer. I have used this method to convert everything else whats wrong?

2007-09-07 19:50:25 · 9 answers · asked by Anonymous in Mathematics

2007-09-07 19:47:21 · 6 answers · asked by ilmaas44 3 in Physics

do they strive to fill all space once created,meaning,post field creation,does the static field expand indefinitely,of course ever weaker but never becoming zero?

2007-09-07 19:47:16 · 4 answers · asked by robertkey60 1 in Astronomy & Space

If 1kg of ice at 0C is mixed with 1kg of water at 10C. Then wat will be the resulting temperature?

Pls tell the answer with the Reason

2007-09-07 19:47:04 · 5 answers · asked by Shaina 2 in Physics

2007-09-07 19:42:18 · 4 answers · asked by Mike 2 in Astronomy & Space

I think another universe existed before. My theory is that the universe was expanding then crunching thousands of times. But even if that theory is correct, how was their a universe in the first place. Hit me with as much theories as possible!

2007-09-07 19:40:26 · 14 answers · asked by Jonah T 2 in Astronomy & Space

2007-09-07 19:38:13 · 6 answers · asked by Jella 2 in Earth Sciences & Geology

In any distillation for maximum efficiency of the column, the distilling flask should be approximately 1/2 full of liquid. Comment on this fact in terms of a) a flask that is too full and b) a flask that is nearly empty.

I don't know about a)...

For b), it shouldn't be nearly empty because the liquid might dry out before you can get the distilled solution? Or it won't make enough distilled solution???

2007-09-07 19:36:16 · 2 answers · asked by Anonymous in Chemistry

2007-09-07 19:34:26 · 12 answers · asked by Anonymous in Mathematics

4.88 mol H2O2

2007-09-07 19:22:31 · 2 answers · asked by MB 4 in Chemistry

what's the equation for this word problem?

The product of twice a number and three is the same as 6 times the number and 3/4. find the number

I thought the equation was 2n(3)=6n-3/4 am I right?


and for the second equation:

If the difference of a number and four is doubled, the result is 1/4 less than the number. Find the number

my equation was 2(n-4)=n-1/4 am I right?

2007-09-07 19:16:21 · 4 answers · asked by sweetbabygirlof1983 2 in Mathematics

2007-09-07 19:16:19 · 1 answers · asked by Giselle 1 in Chemistry

1. what is the difference b/w floating load and grounded load

2.why op-amp has a saturation value of output voltage...im mean i would like to know the theory of this phenomenon

2007-09-07 19:14:21 · 3 answers · asked by Anonymous in Engineering

It is an ingredient in soapmaking.

2007-09-07 19:13:29 · 4 answers · asked by Ed A 1 in Chemistry

I have a triangle with two known angle measuring pi/4 and pi/7. The leg adjacent to pi/4 has the length of 2, and the leg adjacent to pi/7 has the length of x. What is the length of x?

Please explain. Thanks for your help!

2007-09-07 19:10:46 · 4 answers · asked by sillyboys_trucksare4girls 2 in Mathematics

In physics, a wormhole is a hypothetical topological feature of spacetime that is essentially a 'shortcut' through space and time. A wormhole has at least two mouths which are connected to a single throat. If the wormhole is traversable, matter can 'travel' from one mouth to the other by passing through the throat. While there is no observational evidence for wormholes, spacetimes containing wormholes are known to be valid solutions in general relativity.

2007-09-07 19:10:03 · 8 answers · asked by Anonymous in Astronomy & Space

Text Book: Mathpower Ten Western Edition

The question is on powers and exponents. If you could help explain the steps to me in an easy-to-follow way, that would be great and well appreciated. Thanks in advance.

I am going to put the powers (little numbers) in the square brackets. I hope you don't get confused. The -a[3] over the -(b[2]) is what you multiply the first part of the question with. It just looks confusing because the spacing is messed up.

Question:
4a[4]b[3] -a[3]
----------- x -------
a[5]b[6] -(b[2])

Answer:
4a[2]
------
b[5]

2007-09-07 19:07:05 · 5 answers · asked by Alex 3 in Mathematics

what is paper chromatography?

2007-09-07 19:06:36 · 1 answers · asked by Amsterdam c 1 in Chemistry

1. You measure out 45.0 mL of a dense liquid. Its mass is 63.3g. What is its density?

2007-09-07 19:04:47 · 10 answers · asked by vince_oy 3 in Mathematics

Ive worked on these for hours........please explain to me how to solve them?

2n(3)=5n-3/4

and the other one is:

2(n-4)=n-1/4

it's the fractions that are throwing me off.......

2007-09-07 19:03:57 · 3 answers · asked by sweetbabygirlof1983 2 in Mathematics

2007-09-07 19:00:25 · 2 answers · asked by Anonymous in Medicine

I am at my grandmas house and we saw a cougar in her yard. We got all the animails in. My question is when youare face to face with a cougar, what do you do?

2007-09-07 18:48:47 · 11 answers · asked by Anonymous in Zoology

definition, process

2007-09-07 18:46:33 · 2 answers · asked by idieht 1 in Biology

I don't normally look for homework help, but I am sick and I am tired and I want to go to bed, I have to get up in six hours. thow me a friggin bone please

2007-09-07 18:46:20 · 2 answers · asked by Count Chocula 5 in Biology

A)India
B)China
C)U.S.A
D)Brazil
E)France
F)Mexico

2007-09-07 18:46:07 · 4 answers · asked by gauthadi 2 in Geography

2007-09-07 18:45:11 · 2 answers · asked by ribbon 2 in Biology

Given that x=1.5, is the only solution to the equation 4x^2-
ax+b=0, find the value of a and b. The working solution is since x=1.5 is the only solution, the equation is a perfect square (2x-3)^2=0, 4x^2-12+9=0. By comarison, a = 12 , b = 9 .

2007-09-07 18:39:57 · 3 answers · asked by ♪£yricảl♪ 4 in Mathematics

He continues to invest RM 300 on each of Johan's birthday,up to and including his 18th birthday. What will be the total value of the investment on Johan's 18th birthday?

2007-09-07 18:34:25 · 3 answers · asked by aina s 1 in Mathematics