Science & Mathematics - 18 September 2007

I am afraid to just screw right into it, because I'm pretty sure it will crack. If I use a pilot drill it, will that be enough to keep it from cracking. Or could I drill and tap it. And then just screw it together that way. Will the threads be strong enough to hold it in. If this will not work. What are my options for joining them.

The joints will be butt joints not angled. And they will be holding water. And maybe ethylene glycol (antifreeze) in a 50-25 percent mix with water. But I'm not sure if Lexan is rated to hold this chemical.

2007-09-18 11:08:27 · 2 answers · asked by Anonymous in Engineering

Okay, I know that this is a really stupid question, but I'm 11 and taking Algebra 1 and I have to find a data chart by tomorrow of something. You can't imagine how hard this is on Google. I want something that I won't be embarrased to show in public. If you have anything, it is really appreciated. I need it by tomorrow, but you can comment anytime, I would love it. By the way, this is NOT A LIE. Promise.

2007-09-18 11:07:36 · 6 answers · asked by Anonymous in Mathematics

2007-09-18 11:05:30 · 4 answers · asked by Sarah M 1 in Chemistry

i know melted sugar forms carbon and water.

does salt melt?

what does melted salt form?

2007-09-18 11:05:24 · 1 answers · asked by motoson 4 in Chemistry

It is a mineral used in making aluminum

2007-09-18 11:05:18 · 3 answers · asked by Tea 1 in Earth Sciences & Geology

what does it do and is it in an animal cell or a plant cell or both?

2007-09-18 11:03:25 · 7 answers · asked by Anonymous in Biology

2007-09-18 11:02:08 · 8 answers · asked by starwars fanatic! 1 in Mathematics

i have to graph it
need to find the domain
also the range.

The problem is i dont know where to start if someone could give me a step by step way to answer this problem i will be at ya 10 point mercy

2007-09-18 10:59:37 · 4 answers · asked by joemelle k 2 in Mathematics

2007-09-18 10:55:38 · 5 answers · asked by nycgirll 2 in Weather

I mean, which is vertical and which is horizontal!!!!!!!

2007-09-18 10:54:21 · 13 answers · asked by musiclover724 3 in Mathematics

did they appear back at old days??


PS: serious answers please!



~take care~

2007-09-18 10:54:02 · 19 answers · asked by RoChEr 5 in Astronomy & Space

I am taking ems classes to become certified by the state of NY. I was told before my class is over in 6 months, I must work in a hospital er for 10 hours. Did any of you do this, and what were you expected to do during this time. I am really nervous about this, I mean ems yes, but I'm no doctor.

2007-09-18 10:53:58 · 3 answers · asked by Jill S 5 in Medicine

A 47g sample of a conducting material is all that is available. The resistivity of the material is measured to be 1.2x10^-7 Ohm-meter, and the density is 8.12g/cm^3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 Ohms. What is the length required in meters?

2007-09-18 10:53:58 · 1 answers · asked by krstilyzed 1 in Physics

Since the standard form of a quadratic equation is y=a[x-h]^2+k , why are the coordinates for the vertex, (h, -k)? Shouldn't they be (-h, k)?

2007-09-18 10:52:08 · 1 answers · asked by Talriada 2 in Mathematics

2007-09-18 10:47:46 · 1 answers · asked by Olivia B 1 in Biology

coestel erosion is @ n@tur@l process nd its been goin on @long the stretch of co@stline since the shore ws exposed to the se@ @t the end of the lst ice @ge. its nli @ problem when it effects the people. In the lonf term the best solution could be to mve people @w@y from the effeted @re@. The popul@tion density of this @re@ is low so reletively few people would be effected. The f@rml@nd is nt in very good condition. People could be moved to @ccom@d@tion or sumwer @ sfe distence frm the eroding l@nd @re@.
there r problems with this though, @s some people mite nt wnt to move evn if they persicve there home isnt under immedi@te thre@t. The f@ct of moving house is it could be costly nd if they do nto hve insurence for the hosue when it coll@pses they will need to find @ enw house nd will hve to get new property to go in it. If the @re@ continues to erode people will be forced to move to tempor@ry @ccomid@tion until there hosue hs either coll@psed or it could still b s@fe

2007-09-18 10:47:22 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2007-09-18 10:46:36 · 26 answers · asked by New Yorker94 1 in Other - Science

2007-09-18 10:46:21 · 9 answers · asked by Anonymous in Astronomy & Space

I'm having trouble with the following questions.
1] x^4+2x^2+1
2] 8x^2+10x+3
3] 2x^2+7x-4
4] x^3+3x^2-x-3
5] (x-1)^7/2 - (x-1)^3/2

Thanks so much for helping, and I was wondering if there's a good website that could easily explain how to do these problems...

2007-09-18 10:46:08 · 3 answers · asked by Anonymous in Mathematics

A youngster bounces straight up and down on a trampoline. Suppose she quintuples her initial speed from 1.9 m/s to 9.5 m/s.

(a) By what factor does her time in the air increase?
-What is the intial speed (in seconds)?
-What is the speed (in seconds) after it quintuples?

(b) By what factor does her maximum height increase?
-What is the intial height (m)?
-What is the height (m) after the intial speed quintuples?


Thanks for the help i've been stuck on these questions for an hour now. How do you do these???? THANKS! :)

2007-09-18 10:45:21 · 3 answers · asked by Natlsn12009 1 in Physics

also in a geartrain with 4 gears and a 1:5 ratio in each, is it impractical to hope to get 2500rpm out of the last gear if the first is spun by hand?

2007-09-18 10:44:11 · 2 answers · asked by import600 2 in Engineering

Scientists can determine the age of a substance using a method that compares the amounts of different forms of carbon atoms present in the substance. Is this method more useful for organic substances or inorganic substances?

2007-09-18 10:43:48 · 5 answers · asked by Gameover175 1 in Biology

I know Eastern time is 3hrs ahead. Now whats the time difference beetween Pacific time and CENTRAL TIME??

Thanks.

2007-09-18 10:40:54 · 4 answers · asked by ElYouSeeWhy? 2 in Geography

2007-09-18 10:40:33 · 7 answers · asked by da1sexychic 1 in Weather

2007-09-18 10:39:29 · 9 answers · asked by Anonymous in Mathematics

2007-09-18 10:39:28 · 1 answers · asked by Anonymous in Biology

i worked the problem out, but i'm unsure if it is correct--
3x + y = 4
x + 2y = 3

does x= 2.2? and y= - 2.6??

tell me if i did anything wrong.

-thanks [:

2007-09-18 10:38:18 · 21 answers · asked by gratisfaction. 5 in Mathematics

Imagine Beds of dolostone in the Ordovician Galena Group near Dubuque, Iowa.

1. What type of bedding would this represent?

2. Was this dolostone deposited in a nonmarine (terrestrial) or marine environment? Why?

2007-09-18 10:38:06 · 1 answers · asked by Anonymous in Earth Sciences & Geology

2007-09-18 10:36:38 · 7 answers · asked by Anonymous in Zoology

State a question regarding the relationship between them. and what experiment would you design to test your answer using a minimum of 10 subjects.

2007-09-18 10:35:59 · 1 answers · asked by joy 1 in Biology