Science & Mathematics - 6 August 2006

I'm trying to calibrate a K-type thermocouple, but I need something with a reference temperature that I can trust to within .1 C. Is ice water trustworthy?

2006-08-06 10:18:07 · 6 answers · asked by professional student 4 in Engineering

We found this bug outside our house. It is about an inch long. Looks like it has 6 legs and 4 antenna...however, 2 of the antenna could be legs...but it doens't look like he/she walks on them. It also appears to have NO eyes. It's mouth looks like 4-prong beak. Two on the top, two on the bottom. It isn't a red as it looks in the pictures on the following web site...but is more brownish-tan with a darker brown "butt". It would be nice to know what this is...since it's sooo big and strange looking. Any help would be appreciated.

Pictures can be seen at: http://vyquinn.tripod.com/insect

2006-08-06 10:14:35 · 5 answers · asked by Vy 1 in Zoology

2006-08-06 10:14:12 · 6 answers · asked by Irfan S 1 in Physics

I’m fairly familiar with the standard twin paradox, but I’ve never seen the paradox adequately resolved for a closed universe. Closed in the sense that if you travel in a fixed direction long enough, you’ll end up where you started; like if space were the surface of a hyper-sphere.

Anyone know how to resolve it? What would happen if two twins set out in opposite directions and (assuming the universe is closed) they ran into each other again? Calculations made by either of them would yield that the other should be older and they could ask each other who was the younger via radio transmissions without necessarily stopping.

I’ve seen one person resolve it (in “American Mathematical Monthly”) by saying that there IS a preferred reference frame in the universe, but that kind of flies in the face of one of the basic postulates of Relativity.

(Just FYI this stumped my physics professor, but he specializes in Particle Physics not Cosmology)

2006-08-06 10:12:24 · 2 answers · asked by Anonymous in Physics

2006-08-06 10:10:23 · 4 answers · asked by Anonymous in Astronomy & Space

2006-08-06 10:05:32 · 1 answers · asked by Anonymous in Astronomy & Space

I'm trying to figure out my average for my class...please help!! I'd also appreciate if you could tell me how you did instead of just the answer, so I know if I'm ever in this situation again.

40% of my grade= 101
30% of my grade= 94
15% of my grade= 80

I have one more paper due, it's 15% of my grade as well....what's the lowest I can get on it and still get an A?

Thanks so much for your help!!!

2006-08-06 10:04:16 · 7 answers · asked by ARoseInBloom 2 in Mathematics

2006-08-06 10:04:05 · 15 answers · asked by dhurandaru 1 in Physics

The three characteristics of a mammal are: they produce milk, they bear live young, and they have hair.

2006-08-06 10:01:25 · 23 answers · asked by georgemiddleton3 2 in Biology

Heard it mentioned a few times anyone got a clue or link?

2006-08-06 09:59:53 · 3 answers · asked by C.Black 1 in Astronomy & Space

I was in our garage and saw this bug or beetle on the floor- it was large, probably an inch long and half an inch wide, and built like a tenk- greenish-brown and seemed very lethargic

2006-08-06 09:58:22 · 3 answers · asked by Rich K 2 in Zoology

Of the three which is the fastest mover?

2006-08-06 09:55:09 · 22 answers · asked by Anonymous in Astronomy & Space

2006-08-06 09:51:15 · 11 answers · asked by crazykitty 1 in Astronomy & Space

2006-08-06 09:38:19 · 4 answers · asked by Anonymous in Zoology

I need to be able to fully saturate two 2N2222 transistors with a +5v 25mA source. Is this enough? Or could recommend another way around this? If you want a schematic contact me.

2006-08-06 09:32:05 · 3 answers · asked by ↓ImWithStupid ░░▒▒▓▓ 4 in Engineering

Please give some sites if possible.

2006-08-06 09:30:13 · 10 answers · asked by somerslats 2 in Biology

2006-08-06 09:28:15 · 5 answers · asked by Storm 1 in Physics

2006-08-06 09:25:18 · 2 answers · asked by Anonymous in Astronomy & Space

2006-08-06 09:18:01 · 9 answers · asked by jim 3 in Other - Science

2006-08-06 09:13:41 · 8 answers · asked by cool m 1 in Physics

By coolest I mean the most fascinating, unique, inventive, interesting or awesome.

2006-08-06 09:12:29 · 6 answers · asked by miknave 4 in Other - Science

in determining the boiling point of liquid(like ethyl alcohol/benzene etc),we need a capillary tube.how to seal it at its upper end??
sincere answers will be appreciated!!!

2006-08-06 09:10:38 · 4 answers · asked by d♥n't y♥u dare try t♥ add me 2 in Chemistry

by dreams, i mean the ones you have when you're asleep, not the "someday i'm going to open a bagel shop" dreams

2006-08-06 09:09:46 · 8 answers · asked by list 3 in Other - Science

2006-08-06 09:07:04 · 13 answers · asked by Anonymous in Other - Science

t=1/4 (radical sign w/ an s under it)

2006-08-06 09:03:47 · 4 answers · asked by superhomer1221 2 in Mathematics

"why is beaker called beaker??coz it has a beak..:)
kindly give me names of like the one above and its meaning hidden.(such as deflagrating spoon,conical flask,flat/round bottomed etc etc)

pleeeeeeeeeeease,i ve an important chemistry practical today..wish me luck!

2006-08-06 09:02:35 · 1 answers · asked by d♥n't y♥u dare try t♥ add me 2 in Chemistry

2006-08-06 09:01:43 · 26 answers · asked by Anonymous in Other - Science

I haven't use my points often, so i want to use some up! I know it's a waste but I'm bored. Everyday, i will give u a question! It will be about either animals, nature, food, things that go, human body, or everyday people & things! So get prepare to answer them and get 10 points!

Question: Why aren't eggs round? (Give me 2 good reasons!)

Be the first to answer correctly and get 10 points!!!

2006-08-06 08:48:42 · 14 answers · asked by Anonymous in Other - Science

hi,
so, i know that carboxylic acids don't usually undergo decarboxylation.
now, when beta-keto ester is heated, CO2 is lost. can anyone tell me why this occurs? and what's its importance in organic synthesis... other than being a method for producing methyl ketones.
thank you

2006-08-06 08:47:40 · 2 answers · asked by Anonymous in Chemistry

when doing neutralisation reaction(with HCL as acid,NaOH as base and phenolpethlein as indicator)..and adding base from burette dropwise,its color changes to pink.but it is temporary!
how do we know that end point has reached(i-e. acid has been neutralised by base)??
sincere and to the point answers will be appreciated.
please help as i have a chemistry practical of board tomorrow :(

2006-08-06 08:45:52 · 8 answers · asked by d♥n't y♥u dare try t♥ add me 2 in Chemistry