Science & Mathematics - 7 December 2006

what is the net force on a 1-N apple when you hold it at rest above your head?

2006-12-07 11:53:38 · 2 answers · asked by tata_717 2 in Physics

and I2 iodine?

2006-12-07 11:53:03 · 5 answers · asked by MegGC 1 in Chemistry

What are the limitations of current bridge researches that involves Finite Element methods and those that don't?
What are the solutions to these limitations?

Please answer clearly and provide links if needed!

Would it be better if we use like other methods like meshless, boundary element, finite volume or finite voulme method to model bridges?

2006-12-07 11:52:29 · 2 answers · asked by Anonymous in Engineering

2006-12-07 11:51:09 · 9 answers · asked by vicky t 1 in Astronomy & Space

can someone please write the equation and answer

2006-12-07 11:50:58 · 3 answers · asked by gautamsumeet 1 in Chemistry

2006-12-07 11:50:29 · 4 answers · asked by jordon b 1 in Geography

It doesn't have to be totally silent, but quiet enough so that it won't disrupt a classroom.

2006-12-07 11:49:28 · 17 answers · asked by Soccer Dude 3 in Other - Alternative

2006-12-07 11:48:56 · 6 answers · asked by jordon b 1 in Geography

2006-12-07 11:47:26 · 5 answers · asked by s0ulSistaa 1 in Zoology

2006-12-07 11:47:08 · 3 answers · asked by San Fran Kid 2 in Chemistry

2006-12-07 11:46:17 · 7 answers · asked by jordon b 1 in Geography

And Help me out wit this to solving for N question 2/18 = N/27???
$72 is what percent of $96. What Is 4% of 1000
And Finally find percent notation 9/16?????

2006-12-07 11:46:02 · 3 answers · asked by Dj NBT 1 in Mathematics

The length of a simple pendulum is 0.72 m, the pendulum bob has a mass of 308 grams, and it is released at an angle of 10° to the vertical.

2006-12-07 11:45:54 · 1 answers · asked by Layla 1 in Engineering

http://capa.chem.sunysb.edu/nan/addelim.gif
The above is a reaction of ethanoyl chloride with ammonia. Ethanoyl chloride is a typical acyl chloride or acid chloride, R-COCl. Any other acyl chloride will react in the same way.



Which of the following are true statements about the above reaction and its mechanism ?



a) The lone pair of electrons on NH3 attack the carbon of the carbonyl group


b) On the acyl chloride, A curved arrow should be drawn from the Cl atom pointing to the electrons of the C−Cl bond


c) The acyl chloride is a lewis base


d) NH3 is a lewis base


e) This is an addition elimination reaction

2006-12-07 11:44:52 · 1 answers · asked by Anonymous in Chemistry

2006-12-07 11:44:35 · 4 answers · asked by dakota 1 in Geography

i am mostly interested in mammals, fish and reptiles.
one i can name is the ceolocanth

2006-12-07 11:44:22 · 1 answers · asked by Chiari 2 in Biology

I'm working on a worksheet called 'did you hear about...' from a book called Punchline bridge to algebra. I can't find the answers to 7, 10, 13, 14, 15, and 16. please help! But you must reply TONIGHT!!! Thanks!
♥horsegal186♥

2006-12-07 11:44:17 · 2 answers · asked by ♥horsegal186♥ 1 in Mathematics

2006-12-07 11:43:53 · 5 answers · asked by jordon b 1 in Geography

Why: I wish to poke it.

2006-12-07 11:43:39 · 5 answers · asked by Anonymous in Physics

2006-12-07 11:43:23 · 1 answers · asked by joseph kuah 2 in Engineering

Im putting it on a science room as if i go to a religious room the answer is forlorn. what do rational people think?

2006-12-07 11:42:34 · 5 answers · asked by the_sheik_of_sheet_lightning 3 in Earth Sciences & Geology

1)Do you know what Rubella is? (even if you don't know answer)
2)Have you ever had Rubella?
3)Do you know someone who has had Rubella?
4)Do you think there is treatment?
5)Do you know what causes it?
6)Do you know how many days it last?
7)Do you think you are in risk of getting Rubella?
8)Do you know when it was recognized?

2006-12-07 11:41:38 · 4 answers · asked by bluedogcracker 2 in Medicine

2006-12-07 11:41:17 · 22 answers · asked by Tracy H 1 in Mathematics

im running a little late on a science fair project. anyone know where i can get good science fair results from the same kinda question?

2006-12-07 11:40:18 · 2 answers · asked by Anonymous in Other - Science

2006-12-07 11:40:06 · 2 answers · asked by San Fran Kid 2 in Chemistry

2006-12-07 11:39:18 · 3 answers · asked by San Fran Kid 2 in Chemistry

Do lions lactate? How cool would it be to have some lion's cheese!!!!

2006-12-07 11:38:17 · 16 answers · asked by Smelly 1 in Zoology

2006-12-07 11:37:42 · 2 answers · asked by Anonymous in Chemistry

An air bubble of 32 cu. cm. volume is at the bottom of a lake 10 m deep where the temperature is 5C. The bubble rises to the surface where the temperature is 20C. What is the volume of the bubble just before it reaches the surface?

I know it can't be Charles' Law because pressure doesn't remain constant. I thought it may have been the Ideal Gas Law, but I don't know what to use for pressure.

Any insight to help me along? Thanks!

2006-12-07 11:37:08 · 3 answers · asked by alonso_fan85 1 in Physics

is described by the wave function

y=(0.1m) sin[(0.5 rad/m)x-(20rad/s)t]

How is the frequency of osciallation of a particular point at x = 2.0 m (in Hz) determined.

2006-12-07 11:36:05 · 1 answers · asked by Dee 4 in Physics