Science & Mathematics - 23 October 2007

2007-10-23 23:43:32 · 1 answers · asked by Norman M 3 in Biology

you cannot SEE the beams during the day-light hours?

2007-10-23 23:40:35 · 7 answers · asked by nookie181 5 in Physics

The Peltier effect is the reverse of the Seebeck effect; a creation of a heat difference (between two joint) from an electric voltage.

This temperature difference gives rise to a seebeck voltage which is opposite the voltage of the battery. So we can resonably conclude that it can contribute to the loss of voltage of the battery, can't we?

2007-10-23 23:37:08 · 1 answers · asked by Anonymous in Physics

i wonder what they are for. What traits does nuclear DNA affect and what traits does Mithocondrial DNA affect?

2007-10-23 23:28:20 · 2 answers · asked by narkpa 2 in Biology

2007-10-23 23:23:29 · 8 answers · asked by getuplate_haha 1 in Biology

What problems might biology research help us solve in the near future?

2007-10-23 23:20:23 · 2 answers · asked by lady_bugs_2000 2 in Biology

1)let M be a 3x3 matrix (2 1 1, 1 1 2, 0 2 1) (note that in this matrix row 1 is 2 1 1, row 2 is 1 1 2, ...). this matrix can be read as an element of Mat(3,F) for any field F, in particular for Q and for Z/p for every prime p. for which of these fields is M in GL(3,F)? for each field for which M is not invertible, find its null space.
2) consider the transpositions (12),(23),(34),(56),(67) in S_7. how can you prove that this is isomorphic to S_4XS_3, such that (12),(23),(34) generate S_4, and (56),(67) generate S_3.

2007-10-23 23:13:09 · 1 answers · asked by greenheaven 1 in Mathematics

I think I heard that scientists have 'teleported' particles and that there's an outside chance that one day teleportation of larger objects and even living organisms may be possible. My question relates to whether we can guarantee that the process actually transfers the complete information of an organism without destroying it. Imagine a scenario with two 'pods' - one transmitting and one receiving - what if the person 'arriving' at the receiving pod was actually only a facsimile of the one who entered the transmitting pod, with memories intact up to the point of getting into the pod. This facsimile would believe they were the person that entered the transmitting pod, wheras they are actually a perfect copy, and the original person has been destroyed in the process. To anyone observing the process, it would appear as though the transfer had been successful. Doubt this will happen in my lifetime (if ever), but how could you prove that the process is not killing the users?

2007-10-23 23:07:05 · 20 answers · asked by Anonymous in Physics

what color is Norpseudoephedrine?

2007-10-23 23:04:02 · 2 answers · asked by Anonymous in Medicine

2007-10-23 23:00:35 · 1 answers · asked by Nikos B 1 in Chemistry

2007-10-23 22:59:58 · 3 answers · asked by Steve T 2 in Biology

Say I have an electric source A, that I am trying to split into B and C. I don't know what the voltage nor the amp on A is (it might be big), but I want it so that B will always have a small fixed voltage and amp, and pour the rest to C.... or divert them all to B if there isn't enough power from A. Can you tell me what components that I should use?

2007-10-23 22:55:27 · 1 answers · asked by Arip 2 in Other - Science

it is just a question

2007-10-23 22:45:09 · 10 answers · asked by Anonymous in Engineering

a victim was beathing (irregularly) - does this mean their heart was active as well? what kind of activity could that be (VF, VT, asistole)?

2007-10-23 22:37:19 · 5 answers · asked by zapytanko5 z 1 in Medicine

im doing an assignment and i need to noe the role of a producer in a food WEB! not food chain.:):)

2007-10-23 22:34:48 · 3 answers · asked by Anonymous in Biology

can someone prove whether 2+2=5? if so, does this imply 2+2=4 is incorrect?

2007-10-23 22:29:37 · 4 answers · asked by albert o 1 in Mathematics

2007-10-23 22:23:50 · 4 answers · asked by Anonymous in Mathematics

2007-10-23 22:18:26 · 15 answers · asked by Anonymous in Earth Sciences & Geology

12.5% of x is 2538 how to find the value of x. every help is much appricated.

2007-10-23 22:16:38 · 7 answers · asked by Anonymous in Mathematics

thanks again :)

2007-10-23 22:16:36 · 4 answers · asked by Roddy 3 in Chemistry

2007-10-23 22:12:09 · 9 answers · asked by nikki 2 in Mathematics

please show workings

2007-10-23 22:06:35 · 5 answers · asked by Anonymous in Mathematics

2007-10-23 22:04:16 · 11 answers · asked by Anonymous in Other - Science

Just daydreaming again.

2007-10-23 22:02:11 · 12 answers · asked by rvn 1 in Astronomy & Space

What are you doing for the planet we have almost destroyed

2007-10-23 21:52:58 · 9 answers · asked by Joe 3 in Other - Science

In times of hyperventilation. They said that we need to breathe in and out of a brown paper bag in order to rebreathe carbon dioxide? what does CO2 has o do with normalizing the respiration if infact it is needed to be exhaled coz it's a waste product? quite confused sorry!

2007-10-23 21:52:54 · 4 answers · asked by lightblue 2 in Medicine

When measuring solutions the solution makes a curve at the bottom of the fill level which you should use to measure somthing by, what is it called again?

2007-10-23 21:42:49 · 5 answers · asked by h1ten 4 in Chemistry

Links would be great too.

2007-10-23 21:18:48 · 6 answers · asked by Amy 6 in Biology

How come

2007-10-23 21:14:30 · 14 answers · asked by Anonymous in Zoology

2007-10-23 21:02:13 · 5 answers · asked by triplel R 1 in Physics