Science & Mathematics - 5 September 2006

IF a plane flies at 200.0 km/h w/ respect to the air. what is the velocity of the plane relative to the ground if it flies with:
a. a 50-km/h tailwind?
b. a 50-km/h head wind?d


if you don't want to give me the answer? i understand but can you tell me how to do it and how to draw it?

2006-09-05 15:23:11 · 6 answers · asked by Sheyna 1 in Physics

2006-09-05 15:19:49 · 5 answers · asked by Chase 4 in Astronomy & Space

i need the one with the lowest density

2006-09-05 15:19:35 · 9 answers · asked by DAWN M 1 in Chemistry

[1]When a substance burns, matter is __________.
[2]Thompson's experiments led to the discovery of the __________.
[3]Most of the mass of an atome is found in its ____________...A)nucleus...B)electron cloud...C)atomic number
[4]Isotopes can have the same ____________.
[5]A pillowcase full of Halloween candy is a _______________ mixture.
[6]The compund ammonia contains three atoms of hydrogen for every atom of nitrogen, so the chemical formula for ammonia is _________.
[7]Chlorine-35 and chlorine-37 have a different number of _________.

2006-09-05 15:16:05 · 9 answers · asked by Anonymous in Physics

-5+2|2x-7|= -3

|3x-8|=-2

3|2x-7|=0

thanks!

2006-09-05 15:15:19 · 9 answers · asked by shygirl 4 in Mathematics

2006-09-05 15:14:43 · 2 answers · asked by KEturah C 1 in Mathematics

2006-09-05 15:14:24 · 10 answers · asked by Anonymous in Mathematics

2006-09-05 15:14:08 · 9 answers · asked by kennyg43@sbcglobal.net 1 in Astronomy & Space

2006-09-05 15:14:08 · 8 answers · asked by KEturah C 1 in Mathematics

find the area of a parellogram: b,50cm:h, 20cm.

2006-09-05 15:11:29 · 5 answers · asked by fkjnsdfkalf 1 in Mathematics

Ok, that should weed out most people.

I have a question for you. I am a math teacher, and got involved in a discussion with a physics teacher today after school about cosmology. The topic turned to the physical construction of strings. He maintained that a string is nothing short of a piece of spacial fabric that may have been pinched off from space fabric proper, and formed a string independently. I think he is full of bull, but in my recreational reading on string theory I have not come across much about what strings really are. I'm aware of the basic theory, how the vibrational patterns form the various bits of matter that we are aware of as the string winds it's way through multi-diminsional space.

I realize that most of this is speculative theory, but is there any convincing argument as to what a string actually might be constructed of? Or the origins of strings, if they exist?

2006-09-05 15:11:26 · 5 answers · asked by powhound 7 in Physics

2006-09-05 15:10:57 · 4 answers · asked by leiram 1 in Mathematics

2006-09-05 15:06:38 · 6 answers · asked by lm 2 in Mathematics

2006-09-05 15:05:55 · 5 answers · asked by big rider 1 in Biology

they seem the same to me and i can't tell the difference. Please explain to me how they are different.

2006-09-05 15:04:42 · 13 answers · asked by Chris K 6 in Botany

just wondering i know there is no matter in space but what if you placed it on the moon?or just left it in space and exploded it? would it still make radiation.

2006-09-05 15:02:32 · 15 answers · asked by Anonymous in Other - Science

conversion

2006-09-05 15:00:48 · 3 answers · asked by tobeez 1 in Mathematics

How does the resultant displacement change as the angle between two vectors increases from 0 to 180??? huh?????????????

i keep getting confused between displacement and vector and scalar? any way you can help me distinguish?

2006-09-05 15:00:04 · 3 answers · asked by Anonymous in Physics

2006-09-05 14:59:13 · 9 answers · asked by Anonymous in Zoology

Ok...
What is the largest possible displacement resulting from 2 displacements with magnitudes of 3m and 4m? What is the smallest possible resultant? draw sketches to demonstrate your answers...

Ok... I got the smallest possible resultant...But what's a displacement and how do you solve that???

10 points!

2006-09-05 14:56:31 · 5 answers · asked by Twilight Is Love 1 in Physics

If my department did $5000 in sales, and that was 18% of the total store sales, how do I figure out the dollar amount of the total store sales?

Not just the number, but what formula do I use for this?

Thanks.

2006-09-05 14:56:19 · 9 answers · asked by sdraterasbil 2 in Mathematics

2006-09-05 14:55:43 · 8 answers · asked by pnoiz1 2 in Mathematics

In Rome I think... it killed all those people & people didn't expect it... It hadn't erupted in so many years & surprised many... I think it was in Peru or something. What's the name?

2006-09-05 14:55:12 · 7 answers · asked by mani boo/poo 2 in Earth Sciences & Geology

2006-09-05 14:49:10 · 18 answers · asked by Mr. Smith 1 in Other - Science

2006-09-05 14:46:20 · 11 answers · asked by Kerry B 1 in Weather

2006-09-05 14:45:47 · 4 answers · asked by gilcan5 1 in Mathematics

2006-09-05 14:43:46 · 4 answers · asked by mithra 1 in Other - Science

antenna and long legs lots of legs. its also tannish in color. please help, thanks.

2006-09-05 14:43:22 · 7 answers · asked by Phil P 2 in Earth Sciences & Geology

2006-09-05 14:39:12 · 7 answers · asked by baby cat 1 in Chemistry

science question

2006-09-05 14:37:52 · 9 answers · asked by Amanda 1 in Astronomy & Space