Science & Mathematics - 19 September 2007

What is the difference between magnification and resolution? Is one better than the other? Explain.

2007-09-19 11:29:31 · 4 answers · asked by mz. * 1 in Biology

heh, this is for some take home quiz and the question is worded exactly like this

not sure if the lamps were turned on in the first place but that is probably assumed

answer choices include:
a- Both maps would be off
b- L1 would be on and L2 would be off
c- L1 would be off and L2 would be on
d- Both lamps would be on

i think the answer would be d because of the solder bridge but not sure...

and also, what if L1 was opened instead of shorted?

what do you guys think? (thanks for the help guys)

2007-09-19 11:29:27 · 5 answers · asked by HChen87 1 in Engineering

It has to be an experiment, nothing too simple (no volcanoes, etc.) and can be on chemistry, biology, or physics. I'd really like to do something on animals (I have a dog, so if I could use him to help in some way, that would be great) but it can't be anything too fancy, as I don't have the knowledge or the access to many scientific tools. I really want something original. I have until December.

2007-09-19 11:29:02 · 3 answers · asked by Anonymous in Other - Science

2007-09-19 11:28:12 · 2 answers · asked by Anonymous in Mathematics

Are there different kinds of crystals, or are they all the same? I may sound like scifi but has anyone tried to see if it might work. Looking for a cleaner way to get to the star. Do they need to use nuclear reaction to get there. This may sound like Star Trek but has anyone look into it? You need to think out side to box.

2007-09-19 11:25:05 · 4 answers · asked by quickfast 1 in Astronomy & Space

Ok if you are just going to say it sounds far fetched so it cant be true dont continually repost that if someone else has. i have heard of this hallow earth theory. it does sound far fetched however has this ever actually been investigated? It is hard to go up to the north and south poles (where then entrance is supposedly. Has anyone ever investigated it i know its been linked with hitler has anyone else?

thanks

2007-09-19 11:23:28 · 4 answers · asked by Footballer54 3 in Physics

2007-09-19 11:22:16 · 2 answers · asked by Anonymous in Astronomy & Space

I would like to know how to work it out. Also is there a shortcut way with a TI89?

2007-09-19 11:19:41 · 1 answers · asked by mathhelpplease11111 1 in Mathematics

With all this pollution and green house gases etc. I was wondering if anything of this nature escaped the earth's atmosphere and got into space - or does it get trapped by our gravitational field.

2007-09-19 11:18:02 · 2 answers · asked by nettyone2003 6 in Astronomy & Space

i need help w/a couple ? on my chemistry hw by tonite!
here they are:

1) why does ionization energy tend to decrease from top to bottom within a group??


2)why does ioniztion energy tend to increase as you move across a period??


3)there is a large increase between the second and third ionization energies of metal. What kind of ion is the metal most likely to form? Include charge in your answer.


okey dokey, thats all, thanx so much, adn pleeeze try to ge these back to me w/in the next few min, b/c im extremley tired and sick so i want to go to sleep!

2007-09-19 11:17:51 · 1 answers · asked by this calls for a careface 2 in Chemistry

my algebra homework, im so confused. i have no idea how to get the answer. for example form probs 3-8, 3 is A (n sign) B. I HAVE NO IDEA HOW TO GET THE NUMBERS how the hell do you get numbers froma letter and the chart thing, my teacher made on the board with circles and i'm so lost.

2007-09-19 11:17:05 · 2 answers · asked by Anonymous in Mathematics

There are 4 answers total

2007-09-19 11:16:46 · 4 answers · asked by Anonymous in Mathematics

2007-09-19 11:16:28 · 3 answers · asked by Anonymous in Botany

2007-09-19 11:16:14 · 6 answers · asked by lifescircle 5 in Physics

The mouth is the first site of chemical digestion in a human. Your saliva starts the process of breaking down the food you eat. Keeping this information in mind, which organelle do you think would be numerous inside the cells of your mouth?

2007-09-19 11:14:36 · 2 answers · asked by panth p 2 in Biology

is there reason to control the loosestrife and stop it from spreading?

2007-09-19 11:14:20 · 3 answers · asked by Anonymous in Botany

Arrange the following structures, which can be found on male pine trees, from the largest structure to the smallest structure (or from most inclusive to least inclusive).
1.sporophyte
2.microspores
3.microsporangia
4.pollen cone
5.pollen nuclei

a. 1, 4, 2, 3, 5
b. 1, 2, 3, 5, 4
c. 4, 3, 2, 5, 1
d. 1, 4, 3, 2, 5
e. 4, 1, 2, 3, 5

2007-09-19 11:13:33 · 2 answers · asked by Anonymous in Biology

If you put it there for some reason, would it melt?

2007-09-19 11:13:30 · 9 answers · asked by ? 5 in Astronomy & Space

2007-09-19 11:12:00 · 6 answers · asked by colt116 1 in Medicine

another name for convention?

2007-09-19 11:10:28 · 2 answers · asked by Anonymous in Physics

suppose the intial height from which a rubber ball drops is 100in. The rebound heights to the bearest inch are 80,64,51,41.......
a) what is the rebound ratio for this ball?
b) what is the height of the tenth rebound?
c) after how many bounces will the ball rebound less than 1in ?less than 0.1 in?

2007-09-19 11:09:39 · 1 answers · asked by Anonymous in Mathematics

Use what you know about problem solving to explain why your answer is correct. Use words, numbers, and/or symbols in your explanation

2007-09-19 11:09:39 · 3 answers · asked by btweet12 1 in Mathematics

if yoyr earth depend on rain

2007-09-19 11:09:24 · 2 answers · asked by anwar h 1 in Agriculture

2007-09-19 11:08:13 · 3 answers · asked by HChen87 1 in Engineering

2007-09-19 11:07:44 · 3 answers · asked by Anonymous in Mathematics

by columns:
{(1,0,0)(1,0,0), (0,1,0)(0,1,0), (0,0,1)(0,0,1), (1,1,1)(0,0,0), (0,0,0)(1,1,1)}
is linearly dependent.

2007-09-19 11:07:19 · 1 answers · asked by kondiii 1 in Mathematics

2007-09-19 11:06:25 · 4 answers · asked by lolabarry 2 in Physics

i have to solve for the variable.

here is the problem.

4-6(w+2)= 10

i got the answer of w=3

is that right?

if not please help me figure out the problem then.
step by step answers would be the best!
thank you.

2007-09-19 11:06:05 · 3 answers · asked by lalala 2 in Mathematics

i need it by 6:35 am, mass and pressure are something about air

2007-09-19 11:05:57 · 1 answers · asked by Anonymous in Earth Sciences & Geology

I need to know why also. Please help!!!

2007-09-19 11:05:09 · 4 answers · asked by diamond latina 2 in Physics