Science & Mathematics - 16 August 2007

2007-08-16 08:19:46 · 1 answers · asked by Thomas E 1 in Medicine

There were two professors on Radio 5 Live earlier, refuting the statement that nothing can travel faster than light. They talked of 'quantum tumbling' (I think that's what it was), where two particles have infinite velocity and are faster than speed of light, i.e. absolutely instant, in other words in two places at the same time, but they are the same particle.

Can someone explain this further - is it true, what use could this be etc. Thanks

2007-08-16 08:18:48 · 13 answers · asked by Anonymous in Physics

Just a couple.

1. (-5-i)+(6+2i)

2. (2-5i)-(-3+2i)

3. (1-3i)*(3+i)

4. (5-2i)^2

5. i/(3i+4)

6. Last one-
2*sqroot(5x+1)-8=0

Thses are all I missed. I need to see where I made my error.

2007-08-16 08:17:10 · 4 answers · asked by Anonymous in Mathematics

I found them very clean under microscope and very nice smooth touch, but how about some little ozone or O3 oxy?

2007-08-16 08:14:34 · 2 answers · asked by toodd 4 in Chemistry

I'm developing code for an embedded controller. I need to calculate the value of 10^x where x is a floating point number between -4 and 0.

I've tried using the built in C functions but they take too long.

I'm aware of a trick for whole values of x where you perform one calculation if x is odd and a different one if x is even. Afterward, you divide the binary value of x by 2 (shift x to the right one position) and repeat until x is 0.

Are there other tricks to calculate this value?

2007-08-16 08:13:25 · 6 answers · asked by Anonymous in Mathematics

3/4x+5/2

i forget how to do this...plz hlp!

2007-08-16 08:05:12 · 10 answers · asked by Little Yellow 4 in Mathematics

so basically all of the energy and TIME in the universe was clumped together in a little ball smaller than a grain of sand. then it exploded, and several seconds after that we have a period called quark soup. after that the universe cooled and atoms formed and now the universe is expanding faster and faster.

my question is, what is beyond the universe. think about it. matter and even light, can only travel so fast. so if u traveled far enough u would reach the end, the end of everything. but thats the problem, there cant be an end, its simply impossible. its not like there is a wall and all of the sudden u cant go any farther. so there has to be an area with nothingness, and since there is no energy or matter there, it would be uneffected be the big bang, so it would had to have been there before the big bang.

2007-08-16 08:02:27 · 7 answers · asked by Anonymous in Astronomy & Space

Do they exsist? If they do what do they do? Are they the opposite to black holes? Do they spew time and light back into the universe?

2007-08-16 07:58:41 · 11 answers · asked by Ben P 2 in Astronomy & Space

if everyone in the world ran the same way at the same time, would it effect the earth's rotation?

2007-08-16 07:58:04 · 10 answers · asked by Anonymous in Astronomy & Space

How medically significant is a Brown Widow bite?

2007-08-16 07:57:59 · 3 answers · asked by no_one_really 2 in Zoology

I've heard that a large fraction of the human genome is the same for all humans. What fraction is left over, i.e. how many base pairs are there that differ between most/all humans?

I wonder because I'm curious how many "possible" configurations (genetically speaking) there are for human beings.

2007-08-16 07:54:49 · 5 answers · asked by gdubbs 3 in Biology

2007-08-16 07:52:54 · 5 answers · asked by STORMY K 3 in Astronomy & Space

Mari is examining a sample of a fine white crystalline substance. which test will demonstrate that she is looking at a compound rather than an element?

A when placed over a Bunsen burner, the substance burns with a colored flame

B careful measurment reveals that the substance's melting point is 884 C.

C chemical analysis shows that the substance contains sodium and sulfur.

D The substance looks like table salt and Maria remembers that table salt is a compound with sodium in it.

2007-08-16 07:51:56 · 3 answers · asked by CHRIS 1 in Chemistry

I mean, do you hit a big black wall? Every thing in life that we know of has a beggining and end........

2007-08-16 07:51:25 · 16 answers · asked by reich2121 1 in Astronomy & Space

2007-08-16 07:49:35 · 8 answers · asked by stevyb81 1 in Zoology

I need help with the Algebra 1 question:

solve:

(This is the best i can do to make fractions, excuse the dots)

a+2 .....a+3
------ + ------ = 5
2a..........a

or:

(a+2)/2a+(a+3)/a=5

(please explain how to solve the problem, please. answer does not need to be included in answer, just an explanation)Thanks

2007-08-16 07:49:17 · 8 answers · asked by Lalala... 1 in Mathematics

I cant remember... bin long time since i whuz at skewl...
i either make it 60k or 600k... slight difference...
anyone help me find the real value?

2007-08-16 07:49:04 · 12 answers · asked by z3b3rd33 3 in Mathematics

2007-08-16 07:44:16 · 18 answers · asked by toon traveler 2 in Engineering

This principle is used in fire fighting machines viz.sprinkler.
This we experience in day-to-day life also.Water from Shower is cooler than tap water. How? What is the physics/science behind it?

2007-08-16 07:43:57 · 5 answers · asked by Hemant D 1 in Engineering

Im taking chem online and the book I have is awful. I dont understand reactions and how to predict them. Can anyone help me with this question. Thanks!

Predict whether a reaction is likely to occur for the following. If so, write the net ionic reaction.
a) MgBr2 (aq) + ZnSO4 (aq) 
b) BaS (aq) + CuSO4 (aq) 

2007-08-16 07:43:07 · 4 answers · asked by Karter 2 in Chemistry

well my cousin and her family all went to puerto vallarta, mexico for some vacations. i dont know when they will be back *houston* but i think that they might come in like 2-3 days. (before school starts) is there a chance that hurricane dean might hit there??? thanks !!!!! lol

2007-08-16 07:39:17 · 9 answers · asked by kayley 2 in Weather

A car starting from ret accelerates for 15.0 min until its velocity is 20 m/s. It then moves at constant velocity for another 20.0 min before it slows down and finally tops in another 10.0 min. Find (a) acceleration during the first 15 min, (b) the deceleration during the last 10min of its motion, and (c) total displacement

2007-08-16 07:38:36 · 2 answers · asked by Anonymous in Physics

2007-08-16 07:38:32 · 3 answers · asked by Jake B 1 in Earth Sciences & Geology

i pour out water at the length of 3 meters, after a moment it divides into small drops, how
can i make it move only in one direction?

2007-08-16 07:30:23 · 3 answers · asked by majidf_elc 1 in Physics

Please & Thank You

2007-08-16 07:28:09 · 3 answers · asked by booboobear_619 1 in Physics

2007-08-16 07:27:32 · 4 answers · asked by Anonymous in Engineering

How could we explain the fact that there are clothes we like to wear and they bring us luck-f.e. students know that when going on exam it is good to wear something with what they had passed previous exams with good results....

2007-08-16 07:26:39 · 46 answers · asked by ThanksBelit 2 in Other - Alternative

the electronic configuration of boron is 1s^2 2s^2p^1 so in the last layer is missing 5 electrons to fullfil to ...2p^6 and there would be 5 valency electrons. where am i wrong???

2007-08-16 07:19:49 · 2 answers · asked by Anonymous in Chemistry

y' + y = x, y(0) = 1.

2007-08-16 07:18:20 · 3 answers · asked by Anonymous in Mathematics

are all aromatic compounds cyclic?

2007-08-16 07:18:15 · 8 answers · asked by Anonymous in Chemistry