Science & Mathematics - 24 December 2006

....why is it black

2006-12-24 05:48:06 · 10 answers · asked by kvcreom 4 in Astronomy & Space

I can understand possibly traveling back in time, because those events already happened, but in order to go to the future don't you have to "wait" for the future to happen? For example, if you travel at light speed for 1000 years, it will seem like you traveled into the future, because time stops for you when you are going light speed, but your spaceship still takes 1000 years to make the journey. Do some people believe you can just instantly "jump" into the future, and how?

This question is for brainiacs only. Thank you.

2006-12-24 05:46:18 · 15 answers · asked by martin h 6 in Physics

instead on burying or burning our dead, why aren't we launching them into space? where it's then possible for a corpse to land on some other planet somewhere else in the galaxy. a dead corpse on a lifeless planet just may speed up the process of making life on other planets. I don't mean that another human being will spawn there, but maybe some bacteria or something will be able to multiply, feeding on the corpse and accelerating life on other planets by maybe a couple million years. Or, an alien civilization may stumble apon one of our dead bodies and give them awareness of us if they didn't already have it. it's just a thought. I don't want to be buried or creamated. I want to be tossed into space. don't I have the right to make that decision?

2006-12-24 05:37:41 · 9 answers · asked by JizZ E. Jizzy 2 in Astronomy & Space

Find all values of 'k' so that the trinomial x^2+kx-35 can be factored using integers.

2006-12-24 05:33:25 · 9 answers · asked by baseballman1243 1 in Mathematics

2006-12-24 05:29:54 · 2 answers · asked by oddpoeticdude 2 in Zoology

2006-12-24 05:27:30 · 4 answers · asked by PINAR W 1 in Physics

Suppose you placed an orifice plate in a hydraulic pipeline with an hydraulic motor as the consumer.
The speed of the motor would be affected as the flowrate is controlled by the orifice plate.
How would the plate affect the torque of the motor?
Would there be any pressure drop between the points before the plate and the motor? Given that the points taken are of a distance away from the plate (eg 1m per point from the plate)

2006-12-24 05:17:12 · 5 answers · asked by orioza80 2 in Engineering

2006-12-24 05:16:10 · 11 answers · asked by mongo2379 1 in Zoology

2006-12-24 05:13:28 · 10 answers · asked by Just_wund'r_ring 2 in Earth Sciences & Geology

2006-12-24 05:11:25 · 5 answers · asked by Anonymous in Geography

I need know how Ican start up a synchron motor by using frequency converter

2006-12-24 05:08:15 · 2 answers · asked by mohammad y 1 in Engineering

2006-12-24 05:01:39 · 5 answers · asked by STAN 3 in Chemistry

i've heard that the plan is to get men on mars, then start warming up the planet so that the ice under the surface melts so oceans can form and to fill the atmosphere with carbon dioxide so that plant life can survive so that they can start producing oxygen so that we could eventually live there.
well here is my idea; fly a ship containing large amounts of hydrogen gas, and another ship with oxygen gas. when released and mixed and shot with a laser beam from earth a chemical reaction should then occur. resulting in three crucial things. heat, water, and carbon dioxide. only i'm a bit confused where the carbon comes from.
Then, using electricity, split the water back into hydrogen gas and oxygen gas and repeat the process. I'm assuming it would be a net loss of energy, but is there a such thing as a loss of energy? not according to einstein. the normal concept of losing energy is just it being converted into heat. But that is exactly what we want to have on mars.

2006-12-24 04:57:45 · 11 answers · asked by JizZ E. Jizzy 2 in Astronomy & Space

please tell me someone

2006-12-24 04:55:18 · 10 answers · asked by suma 1 in Mathematics

supercontinent pangaea was when all the continents were formed together.

2006-12-24 04:54:35 · 9 answers · asked by dalicious 3 in Earth Sciences & Geology

ah,thank you very much!

2006-12-24 04:54:14 · 10 answers · asked by Anonymous in Geography

2006-12-24 04:53:59 · 6 answers · asked by blahblahblahblahblah 4 in Biology

2006-12-24 04:50:12 · 19 answers · asked by Anonymous in Zoology

2006-12-24 04:35:18 · 2 answers · asked by SRI GIRI 1 in Engineering

I mean what type; for piping purposes.

2006-12-24 04:34:50 · 3 answers · asked by acatalinus 2 in Engineering

integrate

(3+2COSx)/((2+3COSx)^2)

2006-12-24 04:29:52 · 5 answers · asked by Gunjit M 2 in Mathematics

We all know that spiders prey upon flies. But is there a fly or other flying insect that is an active predator of spiders? If there is, some background information would be good.

Merry Christmas and a Happy New Year!

2006-12-24 04:26:54 · 7 answers · asked by 13caesars 4 in Zoology

...or is the path actually elliptical? In other words, if the Earth didn't get in the way, the path of the football would be a very skinny elliptical orbit about 8000 miles long, correct? (Yeh, I realize this very small segment of the ellipse would closely resemble a parabola, anyway, but that's beside the point.)

2006-12-24 04:16:41 · 6 answers · asked by Anonymous in Physics

"compressed air driven vehicle"ive choosen the prime mover(engine) as pneumatic impact wrench and the fuel is obvious.. compressed air.we have to use a compressed air storage tank .so compressed air will be stored in this tank at 80 bar pressure and the capacity of tank is 200 lt.the total load acting on the vehicle is weight of the vehicle -245 kg (kilo grams);(single )driver wt -80 kg (approx ) ;air tank wt --175 kg;so total wt is --500kg this weight is acting in "y"-axis directionso the total force the vehicle has to overcome for its movement is 500*9.8 =4900kg-m/(sec square ) F=m*g)}this is in y axis direction==4900newtons.the friction force Fcomes intocosideration when the body has to move in "x - axis" direction F=0.15*4900==735N(0.15=coeff of rolling friction).to move i need force >735N.Torque required to rotate the wheel for displacement is735*.20=147N-m(.20 m is rad of wheel).wrench has square drive (1/2") & max torque=400-600N-m (coupled to wheel)can this move my vehicle ??

2006-12-24 04:16:28 · 1 answers · asked by k_gunturu 1 in Engineering

2006-12-24 04:16:12 · 5 answers · asked by RP 1 in Geography

2006-12-24 04:15:22 · 7 answers · asked by token24687 2 in Zoology

What is the L'Hopital's rule and how do you use it?

Examples would be very helpful

2006-12-24 04:14:35 · 8 answers · asked by Anonymous in Mathematics

Because we have never recieved a signal from anywhere in space

2006-12-24 04:13:58 · 17 answers · asked by Anonymous in Astronomy & Space

What is the maple way of integrating or something related to that, i saw someone saying maple in the previous questions so whats the maple thingy or method.

2006-12-24 04:11:48 · 2 answers · asked by Anonymous in Mathematics

2006-12-24 04:09:46 · 3 answers · asked by Anonymous in Astronomy & Space