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Science & Mathematics - 19 January 2007

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Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

2007-01-19 01:39:13 · 7 answers · asked by siliqua 2 in Botany

If the arithmetic mean between a and b is twice as great as the geometric mean, show that
a : b = 2 + /3 : 2 - /3
/ stands for square root

2007-01-19 01:34:29 · 10 answers · asked by INTEGRITY 1 in Mathematics

2007-01-19 01:34:00 · 11 answers · asked by mattbeer2337 1 in Weather

Were humans originally made to walk on all fours, but after years and years of evolution we started to walk on two legs?

2007-01-19 01:33:09 · 4 answers · asked by Paris, je t'aime 5 in Biology

as it doesn't form a dative bond. how does is it stable as the carbon atom is lack of 2 electrons.

2007-01-19 01:32:44 · 5 answers · asked by Anonymous in Chemistry

2007-01-19 01:21:58 · 7 answers · asked by Anonymous in Physics

2007-01-19 01:20:50 · 8 answers · asked by sneha 1 in Geography

2007-01-19 01:19:26 · 18 answers · asked by sneha 1 in Geography

The ones you pick up in fields!

2007-01-19 01:17:01 · 5 answers · asked by rosebud 1 in Other - Alternative

Why is it that every time I see people trying to rescue dolphins stranded in shallow water, they are always lesbians? Do lesbians have some natural attraction for these animals?......check it out, it's true. weird.

2007-01-19 01:15:51 · 2 answers · asked by Anonymous in Zoology

Years ago I woke up in the night and saw the outline of a person sort of illuminated in the dark room where I was sleeping. I spoke to the figure and fell asleep again. The memory was very real and I do not believe I was asleep. I am really uncertain about all the issues and do not know if there is life after death etc - anybody know anything?

2007-01-19 01:14:40 · 19 answers · asked by rosebud 1 in Other - Alternative

2007-01-19 01:06:18 · 11 answers · asked by Russell 3 in Biology

You know when someone has a plan to blow up gas barrels s/he shoots it and it explodes as they had planned.

But when they want to trigger an explosion later they shoot it same as before the flammable liquid comes spilling out and they later flick a match or cigarette but on the ground and sit back and watch it explodes where in real life like when it was tested in mythbusters it wouldnt work it

I know thats just how it works in Hollywood land its just entertainment not to be philisophically thought about or justified.

... but things like this leave me confused to how these situations would pan out in real life...like if I were to shoot a petrol truck right in the tank would it explode or begin to spill.

What other loop holes like this have you noticed?
Should they be remedied so they're hyper realistic like the Bourne Identity (where he does shoot a gas tank and it does explodes so I do trust the filmakers that this would really happen because its set in a realistic worl

2007-01-19 01:02:33 · 6 answers · asked by Dude 2 in Physics

2007-01-19 00:59:32 · 10 answers · asked by lookin 4 1 in Geography

2007-01-19 00:59:09 · 2 answers · asked by Anonymous in Chemistry

y=5(x+2)^2+7

2007-01-19 00:58:24 · 2 answers · asked by Denielle B 1 in Mathematics

2007-01-19 00:56:31 · 8 answers · asked by john g 1 in Mathematics

2007-01-19 00:55:52 · 2 answers · asked by Sri Ram t 3 in Engineering

2007-01-19 00:55:25 · 4 answers · asked by Jay B 1 in Zoology

2007-01-19 00:55:15 · 1 answers · asked by Denielle B 1 in Mathematics

what is smart sensors and systems?

2007-01-19 00:47:02 · 4 answers · asked by gaurav 1 in Engineering

My water service was interrupted the other morning, and I was thirsty, so I took a glass, filled it with ice cubes, and put it in the microwave. I set it for 1 min., it did nothing. I set it for 2 min., it did nothing. What I couldn't understand is that while you could put a cup of water or coffee and set it for 1 min. and have it be boiling hot (even the cup is too hot to touch), the glass of ice (including the glass) is still cold to the touch. I know that if I set it for 4-5 min., it'd melt the ice; I don't understand how it heated liquid so quickly, while not affecting the ice as quickly. I hope that this explains it better. Try it with a glass of ice and check your results.

2007-01-19 00:45:02 · 7 answers · asked by b_masters1 3 in Physics

I was told years ago that it was better to leave a neon light on over lunchtime than to switch it off since switching on and off reduced the tube's lifetime more than the cost of the electricity. Is this true?

2007-01-19 00:44:06 · 11 answers · asked by Yasmin 1 in Physics

2007-01-19 00:42:51 · 2 answers · asked by Denielle B 1 in Mathematics

your heart beats all the time, every day, well, til you die.

1. why doesnt it get fatigued, after all it is a muscle
2. if you are unfit, then do arm excercises, you ache the next day, why is it , that if you suddenly start running alot, you dont get an achey heart

just a friday afternoon brain fart!

2007-01-19 00:42:06 · 21 answers · asked by Anonymous in Biology

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