Science & Mathematics - 9 September 2006

I've wondered for ages. When you fill a glass to the top with drink and ice cubes, why doesn't the glass overflow when the ice melts? base this answer on the fact that when a solid melts to a liquid the molecules in the substance move further apart and take up a greater volume. ?!

2006-09-09 08:55:55 · 49 answers · asked by baybee 1 in Chemistry

That if all the world jump at the same time, the orbit of the Earth would change?

2006-09-09 08:55:13 · 9 answers · asked by thor3000 3 in Other - Science

Here's an interesting puzzle I'm struggling to find an answer to, though I don't believe it's really very hard:

A group of seven boys - Jon, Tim, Tom, Bob, Bill, Ben and Will - were playing a game in which the counters were beans. Whenever a boy lost a game, from his pile of beans he had to give each of the other boys as many beans as they already had. They had been playing for some time and they all had different numbers of beans. They then had a run of seven games in which each boy lost a game in turn, in the order given above. At the end of this sequence of games, amazingly, they all had the same number of beans - 128. How many did each of them have at the start of this sequence of seven games?

Does anyone have any answers, and any explanations of how they got them? Once again, have fun...

2006-09-09 08:54:20 · 8 answers · asked by Anonymous in Mathematics

Wht doesnt the U.S. use the metric system, it so much simpler than what we use now!!!!! Please answer, this question is killing meeeeee!

2006-09-09 08:50:16 · 31 answers · asked by Anonymous in Mathematics

Should I wear my boy scout shorts?

2006-09-09 08:48:04 · 5 answers · asked by koolbreeze 4 in Earth Sciences & Geology

2006-09-09 08:47:06 · 25 answers · asked by jodysouth 2 in Mathematics

2006-09-09 08:45:29 · 5 answers · asked by Nurse2b 1 in Biology

If so does that mean that the laws of Physics must undergo a revision?

2006-09-09 08:45:11 · 5 answers · asked by John G 5 in Physics

2006-09-09 08:44:22 · 13 answers · asked by Nurse2b 1 in Biology

If an arrow is shot upward on the moon with a velocity of 50 m/s, its height (in meters) after t seconds is given by H = 50t - 0.83t^2.

(a) Find the velocity of the arrow after one second.
(b) Find the velocity of the arrow when t = a.
(c) When will the arrow hit the moon?
(d) With what velocity will the arrow hit the moon?

2006-09-09 08:43:07 · 2 answers · asked by Anonymous in Mathematics

a) y= 2x^(3) - 5x , (-1,3)
b) y= 8x/(x+1)^2 , (0,0)

and please explain...

2006-09-09 08:39:26 · 2 answers · asked by Anonymous in Mathematics

Consider two tanks, A and B, connected by a valve. Each has a volume of 200L, and tank A has R-12 at 25 degrees C, 10% liquid and 90% vapor by volume, while tank B is evacuated. The valve is now opened and saturated vapor flows from A to B until the pressure in B has reached that in A, at which point the valve is closed. This process occurs slowly such that all temperatures stay at 25 degrees C throughout the process. How much has the quality changed in tank A during the process?

How do I set this up?

2006-09-09 08:37:31 · 3 answers · asked by Anonymous in Engineering

2006-09-09 08:37:08 · 9 answers · asked by The Apostle 2 in Engineering

2006-09-09 08:28:31 · 4 answers · asked by Mike C 1 in Other - Science

Without your knowledge and that communication somehow makes its way to your level of thoughts, to that part of your brain, that brings forth some of those thoughts from someone in that other dimension. Perhaps even communicating with that person or being who is controlling your life by some unknown means, (perhaps with a super computer or something like that). What's your thoughts (pardon the pun) on this errie question?

2006-09-09 08:28:22 · 9 answers · asked by ZORRO 3 in Astronomy & Space

of physics) So does this not mean that the laws of physics are wrong?

2006-09-09 08:26:58 · 15 answers · asked by barefordi 2 in Physics

It may sound stupid. Anyway,i am not sending a man to the moon.This may be ideal for countries with huge manpower like India and China where millions are jobless.

2006-09-09 08:21:15 · 17 answers · asked by indiananytime 2 in Engineering

2006-09-09 08:11:06 · 5 answers · asked by Annie1313 1 in Mathematics

i use SPF 60

2006-09-09 08:08:26 · 2 answers · asked by adorable 4 in Chemistry

2006-09-09 08:05:41 · 5 answers · asked by S&I 1 in Earth Sciences & Geology

2006-09-09 08:00:25 · 11 answers · asked by Anonymous in Mathematics

please help me solve this: 5x-(2x-10)=35----i am not coming up with a reasonable answer--or maybe i am---just needed to see what other people would get

2006-09-09 07:53:43 · 11 answers · asked by biznitchil 4 in Mathematics

Are they working with Qi Gong or Chi?

2006-09-09 07:53:01 · 8 answers · asked by Steven H 1 in Other - Science

The function is f(x) =kx^3 - 8x^2 - x + 3k + 1 and it has a zero, 2.
How can I find the value of k?

2006-09-09 07:52:22 · 6 answers · asked by kira 2 in Mathematics

and what is the dimension of that vector space?

2006-09-09 07:51:51 · 5 answers · asked by chemical engineer 1 in Mathematics

How can we define life and death? what makes someting 'live' and what makes it 'die' ?

2006-09-09 07:49:38 · 21 answers · asked by A-jay 1 in Biology

The combined age of a fox and hen is 91yrs old. The Fox is currently twice the age the hen was when the fox was the same age as the hen is now!How old is the fox?

2006-09-09 07:47:45 · 32 answers · asked by Mac 2 in Mathematics

2006-09-09 07:42:57 · 1 answers · asked by thamal3 1 in Mathematics

2006-09-09 07:42:43 · 11 answers · asked by themanwithnoname 2 in Astronomy & Space

has to do with electricity.

2006-09-09 07:41:33 · 6 answers · asked by clooney depp 1 in Physics