Science & Mathematics - 23 June 2006

2006-06-23 03:48:04 · 1 answers · asked by Anonymous in Biology

I'm looking at a wooden ruler, and see 4 holes: 3 spaced evenly across the ruler, and a large one at the end. Is there any particular reason they're there?

2006-06-23 03:43:59 · 30 answers · asked by mkpaulk 1 in Mathematics

2006-06-23 03:38:35 · 16 answers · asked by sarthak h 1 in Biology

Assuming a weightless container, what volume of helium would be required to lift a one-pound (or one-kilogram) weight?

2006-06-23 03:37:30 · 4 answers · asked by LAURENCE U 1 in Physics

2006-06-23 03:32:02 · 11 answers · asked by Anonymous in Chemistry

i hope the question is clear !!! ...

2006-06-23 03:28:47 · 16 answers · asked by nidhi 2 in Astronomy & Space

I'm having trouble with Algebra and have this problem I casn not figure out. Please help.

Thanks
Spontanious402000

2006-06-23 03:21:45 · 11 answers · asked by spontanious402000 1 in Mathematics

pleas i want all what nasa looking for which is not achieved tell now

2006-06-23 03:17:49 · 6 answers · asked by hsain70 1 in Other - Science

Please help by providing an equation and reasoning.

In a coffee-cup calorimeter, 1.40 g of NH4NO3 was mixed with 74.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents was 23.71°C.

(a) Assuming the solution has a heat capacity of 4.18 J/g°C, and assuming no heat loss to the calorimeter, calculate the enthalpy of solution (Delta Hsoln) for the dissolution of NH4NO3 in units of kJ/mol.

b)(b) If the enthalpy of hydration for NH4NO3 is -630. kJ/mol, calculate the lattice energy of NH4NO3.

Thanks.

2006-06-23 03:14:21 · 1 answers · asked by Anonymous in Chemistry

you take a space station floating in geo synchronous orbit and you tie a string to it, you are sitting on earth and you slowly pull on the string, the force of you pulling will eventually pull the space station to were gravity has an effect and it will come down no matter how fricken big it is...just don't jerk the string, nice steady pull.
Will it work, what do you think?

2006-06-23 03:12:33 · 10 answers · asked by punchpringle 2 in Physics

2006-06-23 03:05:01 · 12 answers · asked by annababyuk 1 in Physics

chemistry

2006-06-23 03:04:30 · 3 answers · asked by atul 1 in Chemistry

2006-06-23 03:01:37 · 39 answers · asked by Anonymous in Mathematics

2006-06-23 03:01:12 · 2 answers · asked by sam Blazer"king handsome&qu 1 in Physics

If one sequence keeps on repeating in the peptide chain , mention howmany times it repeats.If there are 2 or more seperate chains involved , then mention sequences of all of them.Please mention prosthetic groups if any & how many.

2006-06-23 02:58:04 · 3 answers · asked by nandini Y 1 in Biology

earth is orbiting the sun in a orbit. its oval in shape. then doesnt it make any speed difference.

2006-06-23 02:49:46 · 18 answers · asked by sandy 1 in Astronomy & Space

Chemistry

2006-06-23 02:47:39 · 6 answers · asked by atul 1 in Chemistry

i have seen him move a item ahead in time to a nother place and time,i told him to send me a can of soda to me 10 min later it apear before me on my coffee table before my very eyes,how can this be? i lived 10+ miles from him ,i have seen this time thing ,it looks like a space factory its big ,hes is very smart,but is he pulling my leg somehow?

2006-06-23 02:45:50 · 18 answers · asked by crazydave444 1 in Other - Science

2006-06-23 02:43:36 · 11 answers · asked by prasad k 1 in Astronomy & Space

I was watching TV the other night and Stephen Fry (really clever guy in case you dont know him!) was saying that the bubbles were actually caused by imperfections and dirt on the glass. Is this true and if so then why is normal wine not fizzy?

2006-06-23 02:39:08 · 26 answers · asked by Showaddywaddy 5 in Chemistry

While travelling from east to west or west to east

2006-06-23 02:36:12 · 24 answers · asked by balakrishnan c 1 in Physics

2006-06-23 02:33:07 · 13 answers · asked by speedster007 1 in Other - Science

2006-06-23 02:31:28 · 4 answers · asked by Anonymous in Geography

Is there a reason why fruits are in general a round or round type shape?

2006-06-23 02:30:55 · 9 answers · asked by Anonymous in Botany

Please use the Am-GM inequality

2006-06-23 02:28:50 · 6 answers · asked by riel_carlo 2 in Mathematics

2006-06-23 02:27:10 · 2 answers · asked by wonght12 2 in Chemistry

do you think that there are really ghost out there?

2006-06-23 02:27:04 · 16 answers · asked by asking??? 2 in Physics

2006-06-23 02:23:16 · 1 answers · asked by Anonymous in Geography

2006-06-23 02:20:01 · 15 answers · asked by Anonymous in Physics

(Aleins that is...) what planet are you from? Why did you come here to visit Earth?

2006-06-23 02:18:58 · 20 answers · asked by Anonymous in Astronomy & Space