Science & Mathematics - 18 September 2007

If a small planetoid in a disk of debris is orbiting around or spiraling in on the Sun, the debris outside of it will be going slower than the planetoid and the debris inside the planetoid will be going faster. As the debris is drawn to the planetoid by gravity, will the incoming debris result in a planet that spins clockwise or counterclockwise and why? I don't have the Physics to evaluate the effects of the Sun's gravity pulling one way on the debris and the planetoid's pulling the other. We're looking down on the system from above of course.
I know that if the whole disk has the same angular velocity that the planet will end up spinning counterclockwise like we do.

2007-09-18 15:44:46 · 2 answers · asked by dukebaker 1 in Physics

2007-09-18 15:44:28 · 1 answers · asked by JAMES 4 in Physics

the weight of the block on the table is 476 N and that of the hanging block is 180 N. Ignore all frictional effects, and assume the pulley to be massless.
Find the acceleration of the two blocks. ?
Find the tension in the cord ?

2007-09-18 15:41:57 · 1 answers · asked by Anonymous in Physics

I'm having a hard time understanding probability. I always thought that probability doesn't really exist, it was just a idea we came up with. I've always thought that if we had a time machine and kept going back in time to observe a specific event it would end up playing out the same way every time

But now i had someone try and explain uncertainty to me and I’m confused.

Is there really such a thing as a random occurrence or is there only one possible way for every event in the universe to play out?

I'm looking for a physics based answer not a philosophical one. Thanks

2007-09-18 15:38:42 · 4 answers · asked by Russ 2 in Physics

Like for the formula Ca(H2PO4)2
The numbers are all below the letters..
How would you break that apart??
Like Calcium = 2?
Hydrogen = 2?
I'm confused.

2007-09-18 15:38:37 · 2 answers · asked by arenagymnast44 5 in Biology

a. Melt recently frozen ocean water.
b. Collect sea water from below the thermocline.
c. Collect water from just below the sea ice.
d. Only a and b.
e. All of the above.

2007-09-18 15:38:07 · 9 answers · asked by afchica101 1 in Earth Sciences & Geology

-aniqa
xoxo

thanks if you answer!!
x x x x !

2007-09-18 15:37:55 · 7 answers · asked by nikki (: 3 in Earth Sciences & Geology

how is it different than a hurricane?

2007-09-18 15:33:55 · 5 answers · asked by Anonymous in Weather

I want something that has to do with Forensics because it's more fun then other types of science and it's the only thing I find interesting. I don't need a list of websites that have science fair project ideas, I already tried that. But if you have anything that involves forensics and is at a middleschool-highschool range of difficulty then I would love you forever. Oh and I can't be too expensive or anything like that.



Thanks!

2007-09-18 15:32:32 · 1 answers · asked by falling_star3425 2 in Other - Science

2007-09-18 15:30:11 · 3 answers · asked by .:jESSiCA:. 1 in Biology

2007-09-18 15:27:33 · 1 answers · asked by To-the-Stars 4 in Physics

What are the storage and quick-energy forms of carbohydrates found in animals, and how are these forms structually related to each other???

2007-09-18 15:27:23 · 3 answers · asked by Anonymous in Biology

2007-09-18 15:24:29 · 3 answers · asked by Anonymous in Botany

say "asjkldhfasdkjfhlsdakjhgkjgdhkjjfsjdgkdjgfkdsaj"

2007-09-18 15:22:09 · 2 answers · asked by ask me 1 in Mathematics

2007-09-18 15:20:06 · 4 answers · asked by Anonymous in Biology

matter neither gained or destroyed, hmm.?

2007-09-18 15:18:46 · 2 answers · asked by ihaveques 2 in Physics

how did einstein become smart if in his childhood he showed no sign of being any smarter than regular kids.

2007-09-18 15:18:08 · 10 answers · asked by wik 2 in Astronomy & Space

A certain freely falling object requires 1.45 s to travel the last 25.5 m before it hits the ground. From what height above the ground did it fall?

2007-09-18 15:14:14 · 1 answers · asked by lisyaoran 2 in Physics

write each fraction in lowest terms and show work

6 over 8

2007-09-18 15:14:06 · 10 answers · asked by Hoe 1 in Mathematics

These two problems are really confusing me, can someone explain them to me?
1) The Eiffel Tower is 497 ft. taller than the Washington Monument. If each of the monuments were 58 ft shorter, the eiffel tower would be twice as tall as the washington monument. How tall is each?
and...
2) Nine cartons of juice cost the same as 5 fruit cups. Also, one fruit cup costs 50 cents more than one bowl of soup, while one bowl of soup costs 50 cents more than one carton of juice. What would be the cost of each item: a carton of juice, a fruit cup, and a bowl of soup?

Thank you VERY much!

2007-09-18 15:12:29 · 3 answers · asked by |♥*/♥\*♥| 3 in Mathematics

...and what side were the astronauts on and what temperature was it then?

2007-09-18 15:08:10 · 9 answers · asked by Anonymous in Earth Sciences & Geology

I tried reading information from wikipedia and other websites, but I don't understand much about what it's trying to say. Can some one describe Ptolemy's major contributions to astronomy in simpler terms to me? Please don't give me websites unless you truly think that they will help me understand more about Ptolemy's theories.

2007-09-18 15:07:26 · 4 answers · asked by Vampire Duck 5 in Astronomy & Space

2007-09-18 15:06:28 · 6 answers · asked by Anonymous in Medicine

can u find me something that had happened recently on the news that has somehting to do with the scientific method? i mean, like something that was found or discovered by scientists and they showed the result by using the scientific method? and please tell me the website u got this from

2007-09-18 15:04:49 · 2 answers · asked by Boffin 2 in Biology

Im about to write a book on future space travel(like star trek or something).the best form of propulsion would be nuclear fusion for spaceships instead of ionic, right?but how do you sustain a fusion exactly if the temp. is hot enough ,do you have to keep pumping in hydrogen? Or does it maintain itself once you have it controlled?

2007-09-18 15:00:56 · 6 answers · asked by evlangelo 2 in Astronomy & Space

2007-09-18 14:57:11 · 8 answers · asked by Anonymous in Mathematics

motion relative to the bus and relative to a point on the ground

2007-09-18 14:53:42 · 2 answers · asked by schuggyt 1 in Physics

Tarzan, who weighs 820 N, swings from a cliff at the end of a 20 m vine that hangs from a high tree limb and initially makes an angle of 22 degrees with the vertical. assume than an x axis extends horizontally away from the edge of the cliff and the y axis extends upward. Immediately after Tarzan steps off the cliff the tension in the vine is 760 N. Just then, what are (a) the force on him from the vine in unit vector notation and the net force on him (b) in unit-vector notation and as (c) a magnitude and (d) an angle relative to the positive direction of the x axis? What are the (e) magnitude and (f) angle of Tarzan's acclereation just then.

I'm completely lost on what to do.

2007-09-18 14:52:46 · 1 answers · asked by keeptheuroalive 2 in Physics

2007-09-18 14:51:34 · 1 answers · asked by schuggyt 1 in Physics

Hi, i looked online all over and could not find the definition for Golgi Vesicles! it wasnt even in my science book please help!

2007-09-18 14:50:44 · 3 answers · asked by Taija 1 in Biology