Science & Mathematics - 27 December 2007

2007-12-27 17:00:25 · 9 answers · asked by Que 1 in Mathematics

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2007-12-27 16:52:45 · 7 answers · asked by Anonymous in Mathematics

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2007-12-27 16:49:41 · 6 answers · asked by Anonymous in Mathematics

Brian has $88 in his savings account. If he saves $3.50 per week, how long will it take him ti have $200 in his account?


i dont understand this problem and i dont have anyone to help me so plz help.

2007-12-27 16:47:34 · 19 answers · asked by imhere 1 in Mathematics

asking this question because snow is soft in texture and ice is hard

2007-12-27 16:45:00 · 5 answers · asked by ganesh r 1 in Weather

I don't know if there were any who spoke in other languages too. I think there were. It was on tv a good while ago...then on Jay Leno rerun tonight. Do you think they could have gotten possessed? (Just an idea...don't diss me!!)

2007-12-27 16:41:10 · 9 answers · asked by Deenie 6 in Other - Alternative

we know that opposite magnetic poles will repel each other .... since our earth is a big magnet , isnt it possible for magnet to be repelled from the surface of earth and therefore float on the air ?
if we can control the strength of the magnet , arent we able to use it to float from the surface of earth ?

2007-12-27 16:31:14 · 11 answers · asked by karta s 2 in Physics

[{(2^2)(2^3)}5^5]/[(2^3)(3^4)(10^5)]

How do you simplify that without having to calculate all of those things?

{ },[ ], and ( ) are all brackets by the way.

2007-12-27 16:28:50 · 9 answers · asked by Anonymous in Mathematics

i have a Q for all u electrical peeps out there...ok so i have to make a house with four rooms and one room has a three way switch...im using toggle switches and xmas tree lights/wires and 2 D batteries...i finshed wiring the other rooms but how would i wire the 4th room with the 3way switch?!? any help....thanx!!! :D

2007-12-27 16:21:21 · 4 answers · asked by Anonymous in Engineering

2007-12-27 16:18:21 · 1 answers · asked by BOO!! 2 in Zoology

A large Tesla Coil when powered up on Earth emits large bolts of lightning but what if it was turned on in zero gravity and in a vacuum?

2007-12-27 16:16:02 · 3 answers · asked by thelodius 1 in Physics

Please help me....Im so frustrated....
These are the 18 numbers....

7.1

9.2

8.0

6.1

14.4

8.5

6.1

6.8

7.7

21.5

6.7

9.0

8.4

7.0

11.5

14.1

9.5


8.6

Please help me...From my understanding you must find the mean....then you subtract the numbers to the mean, and add up the difference and divide it by 18...Why do i keep getting different answers...

10 PTS TO THE first correct answer.....Thanks.

2007-12-27 16:14:44 · 3 answers · asked by Anonymous in Mathematics

The head of a woodpecker is moving forward at a speed of 7.49 m/s when the beak makes first contact witha tree limb. The beak stops after penetrating the limb by 1.87 mm. Assuming the acceleration to be constant, find the acceleration magnitued in terms of g.

Note: A rollercoaster is around 3 G's.

2007-12-27 16:11:43 · 4 answers · asked by Anonymous in Physics

shadow and measure the energy radiating off the dark side of the earth and 12 hours earlier measure the amount of energy being received on the sunlit side so we can compare the two measurements and accumulate the data over a period of years to prove the earth is warming up or cooling off and how fast? I'm thinking of the Earth as a bomb calorimeter in a vacuum flask with a light shining on one side and reradiation of energy permited on the other. Any difference should be global change regardless of the source. Do we have the technology to do this accurately?

2007-12-27 16:05:07 · 5 answers · asked by balloon buster 6 in Astronomy & Space

please say the answer with procedure.

2007-12-27 16:04:15 · 4 answers · asked by soumya a 1 in Mathematics

2007-12-27 16:01:34 · 11 answers · asked by sm.prasadd 1 in Mathematics

It is not gravity as gravity is best described as anchorage, whereas the movement of the Earth is best described as perpetual motion.

2007-12-27 16:01:05 · 9 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-27 15:57:15 · 1 answers · asked by toadhornedcat 1 in Botany

Solve the system of equations using addition (elimnation) method. If the answer is a unique solution, present it as an ordered pair (x,y) If not, specify whether the answer is "no solution" or Infiniely many solutions"

3x - 11y = 9
-9x + 33y + 18

2007-12-27 15:52:53 · 6 answers · asked by Maggie L 1 in Mathematics

how come the sound of lightning(thunder) has a name and nothing else does??like when you drop a penny the sound of that is just "a penny dropping"

2007-12-27 15:41:10 · 7 answers · asked by Anonymous in Weather

well im solving for t
2cos t = 6cos t - squreroot 12
3cos t= -sq rt 12
cos t = -sqr rt 12/3
cost t=2 sq rt 3/3

the angle is 30 how do i get it???

2007-12-27 15:37:53 · 6 answers · asked by suzy 1 in Mathematics

If the Universe had 0-information before "10-43" seconds after it's creation or before the big bang-singularity, then how did it acquire it's high information state INCLUDING the 4 fundamental LAWS of PHYSICS.....without the input of an intelligence/Creator?......American astrophysicist Righard Gott states "There is an infinite LOSS OF INFORMATION about events before "10-43 seconds"...So how does stable laws of physics POP out of nowhere from probable quantum energy? ....Or is "quantum tunneling" just another "FAITH-BASED" religion masquerading as science..Or just fanciful thinking akin to Snow White and the 7 dwarfs?

2007-12-27 15:33:16 · 5 answers · asked by Archie P 1 in Physics

2007-12-27 15:32:43 · 3 answers · asked by coolkitty24112 1 in Earth Sciences & Geology

how does the wind accour- and why sometims its fast( hard) and sometimes its cold or warm

2007-12-27 15:30:42 · 6 answers · asked by Anonymous in Weather

2007-12-27 15:28:37 · 4 answers · asked by Shameka A 1 in Earth Sciences & Geology

Wouldn't they serve as the "ultimate high-temperature incinerators"?

2007-12-27 15:28:16 · 5 answers · asked by ? 4 in Earth Sciences & Geology

Examples of Everett's many-worlds theory of quantum mechanics invariably give an example of a one-time measurement, rather than a continuous process like detecting radioactive decay with a geiger counter. The theory would seem to say that at every moment there is a division into a decay world and a non-decay world, which would lead to an infinity of worlds in every time period, however short, and offer no way to deal with half-life and the probability of decay. (Probability seems like a problem with the theory even in the ordinary measurement case.)

2007-12-27 15:28:12 · 4 answers · asked by Eisweino 2 in Physics

2007-12-27 15:27:03 · 4 answers · asked by daniel l 1 in Chemistry

2007-12-27 15:26:59 · 5 answers · asked by Steve 1 in Mathematics

Like, a Taser with no electrodes.

2007-12-27 15:26:22 · 4 answers · asked by ? 4 in Physics