Science & Mathematics - 14 October 2006

2006-10-14 14:30:28 · 14 answers · asked by andrew 3 in Other - Science

I'm trying to do a microwave guide (10.5 GHz, wavelength: 2.85cm ) ..I've been searching and I still don't know if I should do a rectangular or a circular one , please help me to know wich one it's better ( there are also eliptical ones but I don't like those..it may be better but I'm too lazy to look at the theory behind :/, unless you are patient enough to explain it to me ..but it's faster to give me your reasons to choose among a circular and a rectangular one.
thanks!

2006-10-14 14:29:03 · 4 answers · asked by jueves 4 in Physics

how would you put that in a contrapositive statement?

2006-10-14 14:23:23 · 2 answers · asked by lol!?? 3 in Other - Science

Also what compounds form with it. Ok I put this rock on my electric stove it sweated out these silver balls, so Im wondering what the other stuff is. It melted when my stove was on 10. Its electric stove and the rock I had was grayish blue sortof easily scratched with a butter knife I could cut it even. It sweated out the metal though and I found this rock a long time ago in the middle of nowhere so its not man made but everyone I show it to says its solder etc.

2006-10-14 14:21:39 · 5 answers · asked by Brettski 3 in Chemistry

2006-10-14 14:18:27 · 4 answers · asked by john cena 1 in Biology

If a car is traveling with its headlights on, going at the speed of light, would you see the headlights?

2006-10-14 14:18:03 · 4 answers · asked by LG 1 in Physics

If I turned them up to 10 how many degrees fahrenheit does it become?

2006-10-14 14:17:39 · 1 answers · asked by Brettski 3 in Chemistry

2006-10-14 14:16:42 · 10 answers · asked by hiyalldr92 3 in Earth Sciences & Geology

2006-10-14 14:15:45 · 7 answers · asked by Anonymous in Physics

A) (5/40), (7/20)
B) (1/3x^3), (3/2x^5)

2006-10-14 14:13:42 · 4 answers · asked by racheldawnsmith311 1 in Mathematics

Please solve and explain

2006-10-14 14:13:08 · 4 answers · asked by racheldawnsmith311 1 in Mathematics

Solve and explain please?

2006-10-14 14:12:08 · 6 answers · asked by racheldawnsmith311 1 in Mathematics

How many people here have heard of FIRST, 10 points to the person who can spell it out and say what each letter means, or is on a FIRST team.

2006-10-14 14:11:21 · 1 answers · asked by sur2124 4 in Other - Science

2006-10-14 14:11:18 · 5 answers · asked by racheldawnsmith311 1 in Mathematics

does anyone know of an interesting geographical issues in america. i need one to do my sose report on. i have looked and looked but none interest me. one of my friends is doing the KKK and gangs in La. anyone know of a good interesting topic?

2006-10-14 14:11:17 · 7 answers · asked by ......................... 1 in Geography

Can you solve and explain?

2006-10-14 14:10:43 · 3 answers · asked by racheldawnsmith311 1 in Mathematics

Can you solve and explain?

2006-10-14 14:08:22 · 1 answers · asked by Anonymous in Mathematics

I am looking for the smartest explanation from a pedagogical point of view.

2006-10-14 14:07:00 · 4 answers · asked by ted 3 in Mathematics

Can you solve and explain?

A) 7yx^3, 21x^3y

B) (x - y), (x^4 - y^4), (x^2 - y^2)

2006-10-14 14:06:25 · 1 answers · asked by Anonymous in Mathematics

In Kg and lbs plz!!

2006-10-14 14:02:46 · 5 answers · asked by A C 1 in Other - Science

2006-10-14 14:00:47 · 3 answers · asked by All I want is to be LOVED! 2 in Chemistry

2006-10-14 14:00:01 · 6 answers · asked by STORMY K 3 in Earth Sciences & Geology

2006-10-14 13:58:48 · 2 answers · asked by benzhowz 3 in Other - Science

I read somewhere that the fingerprints of koala bears are so similar to human fingerprints that they could be confused with humans at a crime scene.

I don't know why koalas would be at a crime scene, but has anyone heard that and does anyone believe that?

2006-10-14 13:58:04 · 0 answers · asked by Rich Z 7 in Zoology

I need to know what those things for lathes are called that cut non cylindrical holes.
i think like a kind of jig with a shaped hole mounts on the object, and then a chisel-like thing goes in and shapes the hole in the object youre cutting into a square, hexahon, etc. (whatever shape the hole in the jig is.)

2006-10-14 13:55:35 · 3 answers · asked by Anonymous in Engineering

2006-10-14 13:55:07 · 12 answers · asked by STORMY K 3 in Botany

2006-10-14 13:51:41 · 5 answers · asked by STORMY K 3 in Geography

2006-10-14 13:49:34 · 7 answers · asked by Anonymous in Astronomy & Space

2006-10-14 13:48:31 · 10 answers · asked by STORMY K 3 in Other - Science

2006-10-14 13:44:50 · 2 answers · asked by stacy 1 in Physics