Science & Mathematics - 8 October 2007

Some of these galaxies are almost approaching 90% the speed of light. Why does their mass not restrict them moving this fast as nothing with a mass can reach the speed of light, or is it possible in this case.

2007-10-08 08:03:43 · 5 answers · asked by 00000 3 in Astronomy & Space

2x - 3y = 8
3x + 4y = -22

2007-10-08 08:01:36 · 8 answers · asked by v19 2 in Mathematics

There are wrist watches and clocks on the market now that the manufacturers say are "guaranteed accurate to 1 second in a million years" How on earth do they know?

2007-10-08 07:59:03 · 5 answers · asked by thanimalay@btinternet.com 2 in Earth Sciences & Geology

a lady drove her car 4 1/8, 5 5/12 and 3 2/3 miles what was the total distance she drove her car?

2007-10-08 07:58:45 · 7 answers · asked by girly girl 2 in Mathematics

Do you think the volume of rain to be related by speed ?
From A point to B point, to assume raining density and
affected areas are in same situation or condition.
Does volume of rain accepted are all same?
Or riding motorcycle is less than riding bike,
and riding bike is less then walking. Which one is true?
Please verify by mathematic calculation. Thanks,

2007-10-08 07:57:48 · 4 answers · asked by ali 3 in Weather

I just discovered this...
http://www.trvnews.com/tsl/090502/index.html

2007-10-08 07:56:52 · 10 answers · asked by Incognito 7 in Parapsychology

a carpenter is constructing a window. if the width of the frame is 1 1/4 inches and the width of the glass is 6 3/8 inches what is the total width of the window?

2007-10-08 07:55:57 · 4 answers · asked by girly girl 2 in Engineering

2007-10-08 07:54:03 · 12 answers · asked by Anonymous in Zoology

2007-10-08 07:51:21 · 4 answers · asked by Petro 1 in Engineering

2007-10-08 07:50:04 · 4 answers · asked by Daisy 1 in Mathematics

I know the answer(from back of book) but I can't solve for it please help

a slab of mass m1 = 21 kg rests on a frictionless floor, and a block of mass m2 = 9 kg rests on top of the slab. Between block and slab, the coefficient of static friction is 0.30, and the coefficient of kinetic friction is 0.20. The block is pulled by a horizontal force of magnitude 58 N. What is the acceleration of the slab?

2007-10-08 07:49:12 · 5 answers · asked by Anonymous in Physics

√3x + 2 - 2=0


yeah i am just lost, by the way just making sure you understand what the problem is, it's 3x+ 2 inside the √ and - 2=0 is outside of it

2007-10-08 07:46:15 · 2 answers · asked by Nick 4 in Mathematics

Where can i find information on the first heart-lung domino transplant it occured on may 11 1987. I would like to know like what hospital in baltimore md it happed who was the surgeon why it happened and things of that nature

2007-10-08 07:44:54 · 1 answers · asked by christmas382000 3 in Medicine

2007-10-08 07:41:07 · 4 answers · asked by Satch_IP 1 in Weather

Name the compass direction that's midway between the following compass points:

a)NNE&NNW
b) SW&NE
c) ENE&SSE
d) N&S

All info welcome..thx!

2007-10-08 07:39:19 · 4 answers · asked by shiny 1 in Geography

2007-10-08 07:38:58 · 21 answers · asked by AD 2 in Paranormal Phenomena

One end of a piece of elastic is attached to a point at the top of a door frame and the other end hangs freely. A small ball is attached to the free end of elastic. When the ball is hanging freely it is pulled down a small distance and then released, so that the ball oscillates up and down on the elastic. The depth d centimetres of the ball from the top of the door frame after t seconds is given by:
d = 100 + 10cos500t

Find
a) the greatest and least depths of the ball,

b) the time at which the ball first reaches its highest position,

c) the time taken for a complete oscillation,

d) the proportion of the time during a complete oscillation for which the depth of the ball is less then 99 centimeters.

2007-10-08 07:36:03 · 5 answers · asked by Anonymous in Mathematics

What is meant by charge seperation and how does it apply to resonance?

2007-10-08 07:34:19 · 1 answers · asked by Anonymous in Chemistry

A 250 kg piano slides 4.2 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.

(a) Calculate the force exerted by the man.
= 376.295 N

(b) Calculate the work done by the man on the piano.
= -1580.439 J

(c) Calculate the work done by the friction force.
= -3564.561 J

(d) What is the work done by the force of gravity?
= ... J

(e) What is the net work done on the piano?
= ... J


I got the first 3 questions; however, how do i find the work done by the force of gravity???????????????
i am so confused . i don't get it so PLEASE HELP!!!!!
I can't solve for the last one, unless if i find the work done by the force of gavity...

2007-10-08 07:31:05 · 3 answers · asked by Nikita 1 in Physics

2007-10-08 07:29:59 · 8 answers · asked by Anonymous in Mathematics

The solution should describe how you know you have found all of the solutions.

Help please?

2007-10-08 07:27:53 · 2 answers · asked by eclipsegt_01_03 2 in Mathematics

2007-10-08 07:25:42 · 4 answers · asked by Anonymous in Astronomy & Space

2007-10-08 07:23:39 · 5 answers · asked by komalu 2 in Mathematics

2007-10-08 07:18:37 · 9 answers · asked by glamour girl 1 in Mathematics

2007-10-08 07:15:42 · 27 answers · asked by Anonymous in Mathematics

I take INH for my positive PPD test and i was told by my doctor to take a medicine which is INH and i know i am not suppose to drink alcohol, but i cant hold my self sometimes so i drink once a month. I wanted to know exactly what well happen to my liver.

2007-10-08 07:15:26 · 0 answers · asked by markUSarmy 1 in Medicine

2007-10-08 07:14:02 · 4 answers · asked by alpana a 1 in Weather

How big do you think Mount Saint Helens will get? Right now it's dome building. What are the chances it will grow to be the tallest mountain in the world?

2007-10-08 07:10:27 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-08 07:06:34 · 2 answers · asked by Anonymous in Physics

2007-10-08 07:02:42 · 2 answers · asked by Anonymous in Mathematics