Science & Mathematics - 19 December 2007

2007-12-19 09:04:40 · 5 answers · asked by MARIA S 2 in Zoology

I'm writing a story about astronaughts, space rockets, astronomy, etc. All real things. Not a science fiction. sooo...

A. Who is responsible for ploting the course of a manned space craft?

B. Can an astronaught change the course within the ship. In other words without Houston knowing or it being too late to do anything about it?

C. How many supplies does the average manned space craft have if ever there was an emergency and how long would said supplies last?

D. how many years of school does an astronaught need to have before he can actually be an astronaught?

Thanks in advance!

2007-12-19 09:04:28 · 4 answers · asked by Caleb B 1 in Astronomy & Space

A black guinea pig crossed (Rufus) is crossed with an albino guinea pig (Rolo) produces 12 black offspring. When the albino (Rolo) is crossed a second black guinea pig (Reese), 7 blacks and 5 albinos ar obtained. What is the best explanation for this genetic situation? Write the genotypes for the parents and offspring?

2007-12-19 08:59:58 · 1 answers · asked by Tim Yoon 1 in Biology

2007-12-19 08:59:42 · 6 answers · asked by speed 2 in Zoology

Nasa, has been everywhere in the universe they could possible go without getting killed, and everywhere they have been, they haven't found the first storage building anywhere, yet so many people believe that there is extra terestrial life out there some where, so where is it?

2007-12-19 08:58:23 · 9 answers · asked by Anonymous in Astronomy & Space

compressible, the shape
condensed, the shape
condensed, the volume and shape
compressible the volume and shape

2007-12-19 08:54:52 · 9 answers · asked by free g 1 in Chemistry

Would we eventually hit a wall or go round in circles or just keep going & going?

2007-12-19 08:54:12 · 24 answers · asked by ? 2 in Astronomy & Space

(the nut will not break), something to do with forces...

2007-12-19 08:51:34 · 4 answers · asked by Anonymous in Physics

Japan uses a loophole to kill whales with explosive harpoons under the guise of "scientific research" while selling the whale meat.
They are now going to target the Humpback Whale. If you think it's wrong what they are doing, you can help save the whales by signing a petition at the site below
http://www.whalesrevenge.com/...
Thanks to everyone that can help save the whales.
from Noelene

2007-12-19 08:50:49 · 27 answers · asked by DY Beach 6 in Zoology

1. Discuss the relationship between autotrophs and heterotrophs. Do heterotrophs depend on autotrophs for their survival? Explain your answer.

2. Compare the storage capacity of ATP and gluclose. How does the cell use each of these molecules to store energy?



ANSWERS GREATLY APPRECIATED =)

2007-12-19 08:49:57 · 1 answers · asked by =] 2 in Botany

which typr of accidental change in DNA code would have the more serious consequences: a substitution of one DNa base for another, or the addition of an extra base soemwhere in the sequence explane

2007-12-19 08:48:43 · 2 answers · asked by Mitch K 1 in Biology

My science fair experiment involved non-ferrous (not containing iron) metals and their reactions with concrete. The aluminum created a yellow gunky substance. Does anybody know what this is? Even if you aren't sure, could you just give me a list of aluminum compounds? I could figure out the answer from there.

2007-12-19 08:47:49 · 2 answers · asked by Tomboy with girly tendencies 4 in Chemistry

Okay the problem says:

A roller coaster cart originally at rest is moved from point A to point B on a chain by a force F, against gravity. It stops temporarily at B. Is the force F conservative or non-conservative? What forms of energy does the cart have at A and B?

I'm confused because I know gravity's a conservative force, but what about friction with the chain? Anyway if anyone can help me out that'd be great, thanks

2007-12-19 08:47:04 · 2 answers · asked by rst41 2 in Physics

A child tries to drink water through a 1m straw but finds that the water rises only 75cm. By how much has the kid reduced the pressure in her mouth below the atmospheric pressure?

Can someone explain how I do this question?

2007-12-19 08:46:02 · 1 answers · asked by Tomasz K 2 in Physics

1) a 215N box is placed on an inclined plane that makes a 35.0 degree angle with the horizontal. find the component of the weight force parallel to the plane's surface

2)you push a 325 N trunk up a 20.0 degree inclined plane at a constant velocity by exerting a 211 N force parallel to the plane's surface.
- what is the component of the trunk's weight parallel to the plane
-what is the sum if all forces parallel to the plane's surface?
-what is the magnitude and direction of the friction force?
-what is the coefficient of friction?

2007-12-19 08:43:10 · 2 answers · asked by emily K 1 in Physics

A SNOWDAY!! We're supposed to get a lot of snow tonight and tomorrow!! so pleasee help us pray!!!

2007-12-19 08:41:19 · 2 answers · asked by Anonymous in Weather

please help and explain?

find the roots of
1) 10x^4 + x^3 + 7x^2 + x -3 = 0

a. -3/5, 1/2; +/- i
b. 3/5, -1/2; +/- i
c. -2/3, 3/4; +/- i
d. -1/3, 3/4; +/- i


2) x^4 - 7x^2 + 12 = 0

2007-12-19 08:40:58 · 1 answers · asked by anna 1 in Mathematics

2007-12-19 08:38:07 · 5 answers · asked by Anonymous in Medicine

A 10-g bullet hits a 200-g block of wood and sticks inside. The block is on the frictionless horizontal surface and initially at rest. What fraction of the bullet's kinetic energy is converted into the internal energy?

if only they gave me velocities =[

2007-12-19 08:37:03 · 3 answers · asked by jabba 3 in Physics

How would I "Express in terms of a single angle (x)" for cos(3x) and sin(4x)?

So far for cos(3x), I have:

cos(3x) = cos(2x + x)
= cos 2x cos x - sin 2x sin x
= (2 cos ^2 x - 1)cos x - 2sin^x cos x
...and then I'm lost

As for sin(4x), I have down...
sin(4x) = sin (2x + 2x)
= sin 2x cos 2x + cos2x sin 2x
= 2 sin 2x cos 2x
= 2 (2 sinx cosx) (cos^2 x - sin^2 x)
...and that's all I have for that.

There's several formulas for cos (2x) and sin (2x), but I have no idea which to use. Any help would be great.

Thanks.

2007-12-19 08:36:01 · 5 answers · asked by Thunder 2 in Mathematics

Hi I need to know what the difference is between haveing one variable and having three variable? I Know the way it is worked out will be diferent for all three but I am having a problem explaining it to my little sister. Please Help. Thanks

2007-12-19 08:33:49 · 1 answers · asked by .... 1 in Mathematics

This is for a job with a company which I don't know their salary range. The job description looks that wrtien for somebody with my credential. I was with a company for a long time. Is it reasonable to ask for what I was making? This is a yong company with a lot of potentials.

2007-12-19 08:31:55 · 5 answers · asked by Sam S 1 in Engineering

my bf of 3 years just told me when he was 18 his mom told him his real father is his grandpa! so his mom slept with her dad and had him! this is so gross to me, what kind of dna problems does that cause? and what about kids? that would be wrong for him to have kids? its just messed up to me...can someone give me more info??

2007-12-19 08:31:13 · 6 answers · asked by lovemyparadise07 1 in Other - Science

Let segment AP be an altitude of triangle ABC, and let segment DQ be an altitude of triangle DEF. Prove that if AP=DQ, then the area of ABC / area of DEF = BC / EF. In words, prove that when two triangles have the same altitude, their areas are in the same ratio as their bases.

2007-12-19 08:30:28 · 3 answers · asked by harrypotteressence 3 in Mathematics

2007-12-19 08:29:41 · 7 answers · asked by tony g 1 in Chemistry

I am doing an assignment in chemistry on unknown organic chemicals.

Through various test like:- solubilty in H2O, Solubilty in NaHCO3, 2, 4 DNP and Lucas test - which has shown that the chemical is a secondary alcohol.

The mass spectrum which I was given had peaks at 31, 42, 55 (which I have found the answers too) - but I am unable to find what MW of 70 could be.

Can any off you good people help - you will acknowledgement in the bibliography. PLEASE!!!

2007-12-19 08:29:31 · 4 answers · asked by Cilla D 1 in Chemistry

What do I do for a living?

2007-12-19 08:28:15 · 11 answers · asked by mikey 3 in Other - Alternative

a. 35 mi/hr * 5280ft/1 mile * 60 min/1 hr
b. 35 mi/hr * 1 mile/ 5280ft* 1 hr/60 min
c. 35 mi/hr *5280ft/1 mile* 1hr/360sec
d. 35 mi/hr * 5280ft/ 1mile* 1hr/3600sec
e. none of the above
, im so lost help!

2007-12-19 08:27:56 · 8 answers · asked by Kristen V 1 in Mathematics

2007-12-19 08:23:05 · 6 answers · asked by Anonymous in Zoology

I've been looking at online ghost pictures and there seem to be alot of "orbs" that simply look like dust particles or minute debris that catch the light of the camera and create a circular shape. I can put in eyedrops, squint my eyes and create the same effect. Do these orbs follow you around? How did to come to be that orbs are a paranormal signature? Are we being duped? Im not skeptic. I do believe there is another level of consciousness we fail to understand, however the entire orb thing throws me for a loop.

2007-12-19 08:22:11 · 6 answers · asked by Anonymous in Paranormal Phenomena