Science & Mathematics - 18 December 2006

Thx!!

2006-12-18 02:46:01 · 3 answers · asked by DedB 2 in Mathematics

1. an astronaut lands on a planet that has twice the diameter and mass of earth. how does the astronaut weight differ from that of earth.

2.if the earth were uniform density [same mass and volumes throughout ] what would the value of g be inside the earth at half its radius.

3.the mass of a certain neutron stae is 3.0 x 10^30 kg [1.5 solar masses] and its radius is 8000 m [8 km]. what is the acceleratiin of gravity at the surface of this burnt out condensed star

2006-12-18 02:43:24 · 7 answers · asked by Lady B 1 in Physics

construct an annotated derivation for the arguement :
1. (P@Q)@R
2. (S@Q)>T
3. ~T
therefor 4. P@R

2006-12-18 02:42:42 · 3 answers · asked by jules 1 in Mathematics

Why are there people still born with bad eyesight?
Isn't it evolutionary seen a bad gene to reproduce?
Wouldn't such a bad-physical trait be extinct by now if only the strong survive?

2006-12-18 02:41:21 · 10 answers · asked by Anonymous in Biology

In "Surely You're Joking, Mr. Feynman!" by Richard Feynman. He said that he discovered a phenomenon where an object must make 2 rotations to complete a circle (4 pi). I would like to know some detail about the theory. It's because the discovery later helped feynman in winning the nobel prize

2006-12-18 02:40:45 · 4 answers · asked by Livar 2 in Physics

2006-12-18 02:40:29 · 8 answers · asked by hamerluke 1 in Zoology

a body of mass 0.51 Kg resting on a rough table(coefficient of friction=0.4) is conected by a light string over a smooth pully to a body of mass 0.42 Kg hanging freely.find the :
a)common accelertion of the two bodies

b) tension in the string
47 minutes ago - 3 days left to answer. - 1 answe

2006-12-18 02:39:20 · 5 answers · asked by reem h 2 in Physics

Say a woman gives birth on a Nasa space ship. What would that mean for the child? Where the hell would he be from? What will his birth certificate say?

2006-12-18 02:38:02 · 15 answers · asked by cryingrainbow 2 in Astronomy & Space

2006-12-18 02:36:00 · 21 answers · asked by mayur g 1 in Other - Science

2006-12-18 02:33:07 · 15 answers · asked by weqiiii 1 in Geography

2006-12-18 02:32:51 · 5 answers · asked by Anonymous in Chemistry

hyperlinks would also be useful

2006-12-18 02:31:45 · 14 answers · asked by Anonymous in Astronomy & Space

2006-12-18 02:31:24 · 21 answers · asked by weqiiii 1 in Geography

is it
A.Newton
B.Aristotle
C.Kepler
D.Galileo

2006-12-18 02:31:08 · 3 answers · asked by Prince_Krona 2 in Astronomy & Space

2006-12-18 02:26:15 · 6 answers · asked by Anonymous in Chemistry

atleast 3 functions of spinal cord

2006-12-18 02:23:37 · 6 answers · asked by sangeetha r 1 in Medicine

2006-12-18 02:21:10 · 9 answers · asked by weqiiii 1 in Astronomy & Space

2006-12-18 02:19:13 · 28 answers · asked by Als 2 in Mathematics

what ARE they? and why do they never work? two year guarantee, pfft.

2006-12-18 02:19:01 · 10 answers · asked by Anonymous in Zoology

How do crows, magpies and sparrows survive the long Canadian winters even when it gets to 30 below zero?

2006-12-18 02:18:48 · 2 answers · asked by Anonymous in Other - Science

a person?

2006-12-18 02:16:36 · 5 answers · asked by condor_killa 1 in Chemistry

I have a very strong magnet that I use to locate wall studs. It is flat and round with a hole in the middle. I can locate the nails the sheetrock with it. I have used it for some time now and it seems that it is as powerful as when I first got it. It got me to wondering if magnests lose any power over time or from attaching it to metal objects? Let me know what you think. Thank you

2006-12-18 02:15:45 · 4 answers · asked by Anonymous in Physics

http://i87.photobucket.com/albums/k133/rockytwerp/fakes/ghostie-animate.gif?t=1166454567

2006-12-18 02:14:39 · 36 answers · asked by dizzay 1 in Paranormal Phenomena

I am just curious.

2006-12-18 02:14:31 · 6 answers · asked by ellis4655@sbcglobal.net 2 in Earth Sciences & Geology

2006-12-18 02:12:55 · 4 answers · asked by chandra l 1 in Medicine

How can you prove this? I know that there is some mathemtical proof.

2006-12-18 02:12:48 · 7 answers · asked by John Doe IV 3 in Mathematics

I have a project that needs to rotate a clear circular disc, it is critical that I do not obstruct the viewing area of this disc. Can someone please suggest some options? I am envisioning something that would involve some bearings placed along the edges of the disc, but I am not really sure.

2006-12-18 02:12:26 · 2 answers · asked by contacttodd 2 in Engineering

2006-12-18 02:12:08 · 3 answers · asked by mark d 1 in Chemistry

I am 34 weeks pregnant and my doctor last night told me it's ok to take Benadryl-D which has Diphenhydramine 25mg and Pseudoephedrine 60mg. I only had one of those left, so this morning my husband went and got me another box but this one says "NEW FORMULA" it now has Phenylephrine 10mg in it instead of the Pseudoephedrine.

I called doc and they said it should be fine to take it still but I want to know if it is going to work or should I return it and get the original kind?

2006-12-18 02:11:42 · 7 answers · asked by Pashta 4 in Medicine

2006-12-18 02:07:24 · 12 answers · asked by jokey k 1 in Biology