Science & Mathematics - 11 November 2007

2007-11-11 02:12:32 · 4 answers · asked by ANTONIOUS G 1 in Mathematics

2x-1 over 3 is less then/equal to -7 or 8x-2 over 2 greater then/equal to 7

2007-11-11 02:07:05 · 16 answers · asked by Orange Gatorade 2 in Mathematics

3a-19=5b (1)
6b-3a=-21 (2)

2007-11-11 02:06:00 · 6 answers · asked by <3 2 in Mathematics

2007-11-11 02:02:49 · 14 answers · asked by BaBy GurL 1 in Weather

The coefficents of friction between the masses incline are mew sub s (u s)= 0.4 and mew sub k (u k)= 0.2
a. find the minimum force necessary to prevent the masses from sliding down the incline
b. find the tension in the rope reuslting from this force
*The masses are then given a brief push up the incline. Using the force found in part a), find

c. the acceleration of the system
d. the tension in the rope

*The masses are stopped and then given a brief push down the incline. Using the force found in part a) which continues to point up the incline, find
e. the acceleration of the system
f. the tension in the rope.

I know the answers, I just cannot figure out the work:
ANSWERS
a. 28 N
b. 14 N
c. 4.8 m/s2 down the incline
d. 14 N
e. 1.6 m/s 2 down the incluine
f. 14 N

2007-11-11 01:57:37 · 2 answers · asked by joe s 1 in Physics

2007-11-11 01:57:27 · 5 answers · asked by ~~xx{Stelth[k9]}xx~~ 1 in Weather

The river is rising 5 to 8 inches and hour and threatning to be of biblical proportions. Half the town is already under water and this will be my last posting on Q&A until the water goes down or I am evacuated to some where with a working internet. See Ya!!!

2007-11-11 01:56:38 · 2 answers · asked by Traveler 7 in Weather

find the value of :
lim tan(x) / ( 1 - cos(x) )
x-->0

2007-11-11 01:56:07 · 3 answers · asked by Hassan E 1 in Mathematics

2007-11-11 01:51:51 · 4 answers · asked by ~~xx{Stelth[k9]}xx~~ 1 in Weather

2007-11-11 01:50:49 · 5 answers · asked by please let me know..... 1 in Mathematics

What is the difference between the color and streak of a mineral?



Rock A has a piece of rock B included inside which is older and how do you know?



How do plate tectonics explain the formation of metamorphic rocks?



A layer of sandstone is found on top of a layer of limestone in a geologic cross section. what does this tell you about how the sea level changed in that area?



explain how a metamorphic rock can change into another type of metamorphic rock?



Answer those and I will give you 10 points!!!

2007-11-11 01:50:25 · 2 answers · asked by King Violation. 5 in Earth Sciences & Geology

Thress proenzymes that are involved in digestion of proteins in the stomach and intestines are pepsinogen, chymotrypsinogen, and trypinogen. what is the advantage of producing these enzymes as inactive peptide?

2007-11-11 01:47:31 · 3 answers · asked by ham 1 in Chemistry

Have any of you had a paranormal experience such as seeing a ghost? Have any of you ever felt someone sit next to you when no one is there? Have you ever felt a strange unexplainable touch on your shoulder when you are alone? Have you ever heard anyone elses accounts on the paranormal? Tell me all of your true stories related to the paranormal or true stories of your friends or family or tell me true stories from as many people as you can. I really want to know if anyone hase experienced stuff like this. Keep it true stories.

2007-11-11 01:46:29 · 8 answers · asked by GoldenHaze 3 in Paranormal Phenomena

1.) 6x^2+4y^2+24x-32y+64
a.) center b.)vertices
c.)covertices d.)foci

2.) x^2+6x-4y=-25
a.)vertex b.) axis
c.)focus d.) directrix

3.)x^2+14x+y^2+6y=23
a.)center b.)radius

A little help with these would be greatly appreciated, I think if i know how to do these problems I will be able to figure the rest of my problems out. thank you

2007-11-11 01:42:46 · 3 answers · asked by Danielle M 1 in Mathematics

2007-11-11 01:40:51 · 1 answers · asked by doboworth 1 in Mathematics

2007-11-11 01:36:17 · 3 answers · asked by Anonymous in Geography

Mike borrowed $22,000 from his uncle to start a business. He repaid him after 3 years. The annual simple interest rate was 7.25%. Determine the total amount he repaid.

2007-11-11 01:34:47 · 4 answers · asked by jewel7962002 1 in Mathematics

2007-11-11 01:31:42 · 4 answers · asked by Toilet Finger! 2 in Physics

I only have a question. I am doing my math homework and a question says: Express the Volume (V) of the cylinder as a function of radius (r).
Does this mean that I have to solve for the radius (r)?
Thank You!

2007-11-11 01:31:13 · 7 answers · asked by . 6 in Mathematics

2007-11-11 01:29:27 · 1 answers · asked by ~~xx{Stelth[k9]}xx~~ 1 in Earth Sciences & Geology

i need it fast for my project topic

2007-11-11 01:28:29 · 6 answers · asked by Pretty Girl! 1 in Earth Sciences & Geology

first i know light have no mass or weight.and i read that when a light goes in black hole it dont come for gravity so i knewed that a light ray have no mass or weight and if something dont have mass or weight it dont have any effect in gravity so light dont have a gravity effect because it is a power so my question is why all the other says when the light goes in black hole it gets sucked or traped by its gravity power.but why.it shouldent be happening am i right?
and what is a blackhole and a wormhole?(please say it in easy english cause iam only 14)
and do u think that if a planet have oxyzen and water can there be a life?
what is more faster than light?
well we know oxyzen is needed for fire to be burn do u think there is oxyzen in sun if no how can it be burning?
if you like my questions you can give me a star.
and take care.

2007-11-11 01:26:44 · 2 answers · asked by Anonymous in Earth Sciences & Geology

are photosynthetic pigments also lipids? i've searched for answers but i couldnt find.

2007-11-11 01:18:00 · 1 answers · asked by Doyenrizo 2 in Botany

2007-11-11 01:17:28 · 8 answers · asked by Delhiwood 1 in Geography

Youtube video of the French version of "Who wants to be a millionaire" where a contestant cannot answer this and has to ask the audience. Surprising response.
http://www.evolutionnews.org/2007/09/the_french_reject_prayer_while.html

2007-11-11 01:09:23 · 4 answers · asked by paul h 7 in Astronomy & Space

Youtube video of the French version of "Who wants to be a millionaire" where a contestant cannot answer this and has to ask the audience. Surprising response.
http://www.evolutionnews.org/2007/09/the_french_reject_prayer_while.html

2007-11-11 01:08:48 · 4 answers · asked by paul h 7 in Other - Science

2007-11-11 01:05:44 · 5 answers · asked by jcone08 1 in Mathematics

2007-11-11 00:57:19 · 7 answers · asked by Hadiza H 1 in Astronomy & Space

2007-11-11 00:51:37 · 15 answers · asked by Anonymous in Physics

12, 27, 52, 87, 132...

And how do you work it out?
Thanks!

2007-11-11 00:48:36 · 8 answers · asked by Anonymous in Mathematics