Science & Mathematics - 27 July 2007

Positive linear coefficient of thermal expansion would seem to make the inside and outside diameters increase (in a circle). Positive volumetric coefficient of thermal expansion would seem to make the thickness increase which would decrease the inside diameter. Which one wins?

2007-07-27 12:23:30 · 9 answers · asked by wantaknowall 1 in Engineering

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How to build a functional thermometer?

How would you make a FUNCTIONAL thermomter which works in a temperature range of about 10-80 degrees Celsius.

2007-07-27 12:21:46 · 3 answers · asked by Sum1 2 in Chemistry

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If there was a nuclear war, how long would it take for the Earth to become liveable again?

I am making a game in which there was nuclear war in 2014, and the population was forced to live underground until the surface became livable again. So, if all of the world's nuclear powers used their entire stocks, about when would the surface become livable again?

Thank you.

2007-07-27 12:21:04 · 4 answers · asked by Muad'dib 1 in Other - Science

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Should I go on medicaid? I don't want to be a welfare case.?

I grew up in a family who greatly frowned upon people who used the system and allowed themselves to become welfare cases. I was brought up to work for what you have. Well ever since I was sixteen I have completely supported myself. Lately a lot of medical problems have come up for me though and I'm getting tired of just dealing with the pain, not going to the doctor, and risking having something serious because I simply cannot afford the doctor.

Is medicaid welfare? I need to see the doctor but I really don't want to be one of those people my boyfriend or father referred to when they said, "I have to go to work every day, millions of people on welfare are counting on me."

Heh. Info on Medicaid would be helpful. Thanks.

2007-07-27 12:12:00 · 4 answers · asked by Coadster 2 in Medicine

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Solve this equation by factoring...... 6x^2+42x=0?

Please I can't figure it out and my homework is due tommorrow, everyone I've asked doesn't know how to do it? The faster the answers the better!! Thanx!

2007-07-27 12:11:56 · 9 answers · asked by Alysha D 1 in Mathematics

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Do you think earth is an Alien experiment?

sometimes i think if the earth was an experiment by some alien form and maybe they messed up and abandoned it. as well as the solar system. do you think there is more to this mystery called life

2007-07-27 12:03:35 · 9 answers · asked by Anonymous in Astronomy & Space

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how many pounds is 48 oz?

in an online converter, it says 2.5, but by my measurements its more, so what is it

2007-07-27 12:00:40 · 13 answers · asked by Anonymous 1 in Mathematics

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Solve the system by substitution?

Given f(x) = –5x – 1, find f(a – 4).
A) –5a + 19
B) –5a – 5
C) a – 10
D) a + 19

Solve the system by graphing.
x – y = 5
x + y = 3

Solve the system by addition.
x + y = 4
x – y = 6

Solve the system by addition.
–2x – 3y = –17
x + 4y = 16

Solve the system by substitution.
x + y = 12
y = 2x

Solve the system by substitution.
x – 4y = –19
–4x – 5y = 13

2007-07-27 11:58:49 · 7 answers · asked by busy me 2 in Mathematics

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What could be causing these power surges?

We've been having a lot of power surges lately in our home. It has messed up my computer twice, even though I have a surge protector. Luckily my husband knows how to fix it when it does. The first time it actually fried my power supply. It seems to be happening at least once a day, sometimes at night... Sometimes several times a day. We're not pulling that much power. We live in a split level type duplex (with family) and our family that lives in the other half is out of town...so no power pulling from there... And we just have a couple lights on, usually, and sometimes one or both computers. That's about it other than the normal stuff that runs all the time...Like fridge, clocks, and small things.

It has never done this before and has been happening a lot lately. I don't know if this might have anything to do with it... but it has been raining here where I live almost every day almost all summer...no kidding!

If anyone knows what the problem could be, please let me know!

2007-07-27 11:52:05 · 2 answers · asked by νí®τǘø§ ωǿмåņ 3 in Other - Science

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I need help in my math in givens and proves.?

GIVEN:AB and CD intersect at E, BA bisects CD, CA_I_CD, BD_I_ CD
PROVE:a. [triangle]ACE~=[triangle]BDE. b. AE~=BE

2007-07-27 11:49:58 · 1 answers · asked by Mike Gaol 1 in Mathematics

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how do you work the gas rate of an appliance?

2007-07-27 11:47:36 · 2 answers · asked by lee v 1 in Engineering

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Which 6 inch telescope is the best?

If you have either knowledge of, or experience using telescopes, which one would you recommend for ease of use, durability, and price, for family viewing at home?

2007-07-27 11:47:23 · 9 answers · asked by Coco 2 in Astronomy & Space

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How To make Fire With Rocks??

2007-07-27 11:42:39 · 3 answers · asked by ? 1 in Earth Sciences & Geology

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How to Make Coal For a Fire Place?

2007-07-27 11:41:45 · 3 answers · asked by ? 1 in Earth Sciences & Geology

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discuss a real-life situation where a stright-line graph might be applicable?

2007-07-27 11:38:16 · 5 answers · asked by moe 1 in Mathematics

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I have rabies and the thirst is killing me. What should I do about the foam?

2007-07-27 11:37:40 · 9 answers · asked by Anonymous in Zoology

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How much water would this be equivalent to?

theres a power plant in our area that consumes "230 Million gallons" of water a minute, what size body of water has that much water in it, like would that be an olympic size pool, im just trying to relate to how much water that is in something i can relate it to

2007-07-27 11:35:46 · 8 answers · asked by gopackgo51 1 in Mathematics

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What is the capital of north dakota?

2007-07-27 11:32:48 · 15 answers · asked by Anonymous in Geography

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why are there a few different onions types? why does it matter it all smells the same.?

different colors, shapes but same smell. what is the difference?

2007-07-27 11:28:38 · 4 answers · asked by just me 2 in Botany