Science & Mathematics - 14 January 2007

2007-01-14 02:54:46 · 2 answers · asked by christine 1 in Mathematics

All organisms don't have the same number of rungs in their DNA. If they all evolved from the same source, how are the rungs added? During reproduction, one side of the DNA comes from the male and the other from the female (at least for the more advanced organisms). Wouldn't you need the same mutation on both sides for it to be passed down to the next generation?

2007-01-14 02:54:42 · 6 answers · asked by Zefram 2 in Biology

global warming, so called, seems to indicate that sea levels are rising - but are they ? when I go to the beach it seems that the sea is pretty much where it was years ago... and all the sea walls and harbour walls and so on built decades or even centuries ago seem to be ok too. So, are sea levels really rising, and where is the real proof ?

2007-01-14 02:52:50 · 10 answers · asked by mutant1000 1 in Earth Sciences & Geology

I am having trouble writing equations like this with such given information.

2007-01-14 02:52:10 · 8 answers · asked by kathy p 1 in Mathematics

I need it to be in an other catagory

2007-01-14 02:49:18 · 2 answers · asked by ttrpck27 1 in Physics

2007-01-14 02:48:44 · 1 answers · asked by christine 1 in Engineering

extinction coefficient is wave length specific. explain!

2007-01-14 02:47:37 · 1 answers · asked by arnab 2 in Chemistry

We live in Southern California not far from San Diego and we never experienced this. It is expected to be 50 degrees today. Will that help?

2007-01-14 02:44:14 · 6 answers · asked by Beth 4 in Weather

2007-01-14 02:43:08 · 5 answers · asked by fatma 2 in Chemistry

Will it be possible to see the comet still? I have just read about it but dont know which way I need to look from the midwest to see it. As I understand if you are in the Southern Hemisphere it will be getting brighter for the next few days.

2007-01-14 02:40:30 · 5 answers · asked by cnmsales 1 in Astronomy & Space

What is Ammonium Sulphate and other salts as fertilizers? Please help me! thank you

2007-01-14 02:39:43 · 1 answers · asked by wannabe_smartass 1 in Chemistry

when water in polar river's water freezes,the frozen upper layer doesn't allow the inner layers to freeze which protects the animals living in it.
similarly when water starts freezing in ice tray,the water freezes from the sides of the tray.
then why does water in ice tray freeze?doesn't the outer frozen layers prevent the whole water from freezing?

2007-01-14 02:37:47 · 4 answers · asked by shreya i 2 in Physics

spectroscopy)

2007-01-14 02:37:38 · 2 answers · asked by mask 1 in Chemistry

2007-01-14 02:32:54 · 13 answers · asked by Tanya G 1 in Earth Sciences & Geology

Hey guys!

Any great recommendations for medicine books, as in not the theory kind but books on ethics, the medical profession as a whole etc? Or maybe inspiring or discussive books that offer different perspectives on the doctor profession?

thanks a mil!

=) rgds, anna

2007-01-14 02:31:38 · 2 answers · asked by samseventy2 2 in Medicine

is it hot or cold? cloudy or sunny? windy or mild , tell me!

2007-01-14 02:30:38 · 13 answers · asked by GuNthEr'S_girl►♦♠ 2 in Weather

I have a triangular table which has sides of 20,25 & 50 inches.What is the area of the table?

2007-01-14 02:29:21 · 8 answers · asked by Sidd 2 in Mathematics

2007-01-14 02:23:11 · 2 answers · asked by Anonymous in Chemistry

graphs

2007-01-14 02:21:50 · 7 answers · asked by Anonymous in Earth Sciences & Geology

We have electromagnetic trains in prototype status. They travel on one track. They are build from electromagnets what require adding energy to move. So what if build tunels made from constant magnets to create “magnetic rivers” with magnetic force constantly leading into one direction? To start traveling we would only have to put a “magnetic boat” into tunel and to stop we would have to take it off from tunel. Would it be more free from energy need to move? What speed it could allow? As I understand economicaly it seems wrong when thinking only about small area, but I am rather thinking about creating worldwide net of such “rivers”. Sorry for my far sight into future, but honestly I am hoping you are really going to speed up with research and change your economy to work with real efficiency ... and I hope I will see you in Universe space soon (even by this technology). I mean colonies, not turism.

2007-01-14 02:20:51 · 1 answers · asked by Robert M Mrok (Gloom) 4 in Physics

2007-01-14 02:20:35 · 2 answers · asked by Anonymous in Physics

What is a voltmeter? I'm asking this because i'm going to do a project and it there is this voltmeter.

http://www.re-energy.ca/ridethewind/buildamodel-2.shtml

Do i really need it for this project or it is just used to measure the volts? (or whatever =.=)

2007-01-14 02:19:36 · 5 answers · asked by freeze 1 in Engineering

2007-01-14 02:19:31 · 11 answers · asked by Travis 1 in Engineering

2007-01-14 02:18:30 · 5 answers · asked by Anonymous in Physics

Also where is it?

2007-01-14 02:17:51 · 14 answers · asked by troy w 1 in Astronomy & Space

2007-01-14 02:12:32 · 3 answers · asked by Musaab Al-Saleem 1 in Zoology

Hey, I'll just jump right in
x=t-sin(t) y=1-cos(t)

dy/dx=sin(t)/1-cos(t)
=?/y
Can't find an expression for sin(t) so i am stuck can anyone help?

2007-01-14 02:10:41 · 2 answers · asked by Philip J 2 in Mathematics

hi...i need help on my t-total extension where i rotate my t-shape...i dont know what to do..i am stuck.....how do i find the rule to the rotated t-shape? how do i turn the 5tn-63 (9 by 9) into a 5tn+63? my maths teacher did not explain this properly and it is due on tuesday. i really need help. after this i have another 2 more extension which i dont know what to do.. plz help me somebody

2007-01-14 02:10:11 · 3 answers · asked by Anonymous in Mathematics

2007-01-14 02:08:53 · 1 answers · asked by reena p 1 in Chemistry

x -2 -1 0 1 2 3
y- - 1 3 - - -

2007-01-14 02:08:32 · 3 answers · asked by becky p 1 in Mathematics