Science & Mathematics - 10 August 2007

how fast would i go if i coasted down 2nd half of hill startng from rest?

2007-08-10 05:52:45 · 2 answers · asked by e=mc^2 1 in Physics

2007-08-10 05:51:44 · 15 answers · asked by Anonymous in Mathematics

Between which two planets are asteroids chiefly found?
A) Jupiter and Saturn
B) Neptune and Pluto
C) Mars and Jupiter
D) Saturn and Uranus

2007-08-10 05:50:59 · 6 answers · asked by Anonymous in Astronomy & Space

2007-08-10 05:47:41 · 22 answers · asked by Anonymous in Paranormal Phenomena

also at some time in the future the poles will swith how will this affect all the navigation equipment in the world?

2007-08-10 05:44:01 · 9 answers · asked by agoldstrom_us 3 in Earth Sciences & Geology

Determine whether the given number is a solution to the equation.
3x - 7 = 2x + 1
Is 5 a solution to this equation?

2007-08-10 05:34:26 · 7 answers · asked by Anonymous in Mathematics

Basically I received an e-mail from some co- workers. I don't know if it's true or not but it sounds interesting. But I don't want to be outside just standing arounding with my head to the sky and nothing happens. They stated that Mars will be the brightest star starting in August.It will end on Aug. 27th when Mars will actually be visible about 34.65 miles away from Earth.It will appear we have two moons. The next time this may appear is year 2287. Fact or Fiction?

2007-08-10 05:33:29 · 21 answers · asked by lilgirlknockout 1 in Astronomy & Space

For a 69kv double circuit line, is it more efficient to use one pole holding both circuits or using two separate poles each holding one of the two circuits?

2007-08-10 05:22:59 · 2 answers · asked by Anonymous in Engineering

How do you convert a DC motor in to a generator? And how much current will it produce. I was gonna use a 12 volt motor from a tire inflator.

2007-08-10 05:20:10 · 2 answers · asked by mexicanonfire 3 in Engineering

An airplane is flying with a speed of 285 km/h at a height of 3500 m above the ground. A parachutist whose mass is 77.6 kg, jumps out of the airplane, opens the parachute immediately and then lands on the ground with a speed of 3.45 m/s. How much energy was dissipated on the parachute by the air friction? The drag constant of the parachute is 64.0 N/(m/s)^2.

I assume you find the total energy lost but I dont know what to do from there

2007-08-10 05:19:54 · 3 answers · asked by Anonymous in Physics

I'm kinda confused on this problem
A car is traveling at night along a highway shaped like the parabola y=(x^2)/10 from left to right. At what point on the highway will the headlights illuminate the point (10,5)?

Thanks

2007-08-10 05:19:37 · 2 answers · asked by mdang12000 2 in Mathematics

Do you ever think if there are intelligent beings 50 million light years away talking, thinking, and having similar thoughts such as we have? earth seems so insignificant compared to our galaxy.

2007-08-10 05:17:57 · 6 answers · asked by Balrog 2 in Astronomy & Space

1-a matt black surface
2-a polished silver surface

2007-08-10 05:16:14 · 6 answers · asked by Anonymous in Physics

f(x) = both ((x^2-4 if x<1) and (kx+2 if x>or equal to 1))

thanks

2007-08-10 05:15:08 · 3 answers · asked by mdang12000 2 in Mathematics

2007-08-10 05:04:41 · 6 answers · asked by Rudresh c 2 in Chemistry

I was watching a Discovery Channel show about the geography of America. Of course, many of our features were shaped by the glaciers receeding when the last Ice Age ended. The show repeatedly mentions the receeding glaciers, but they do not explain why the Earth's temperature changed. So, what caused the end of the last Ice Age? Are there many theories or just one?

2007-08-10 05:01:07 · 7 answers · asked by Melanie J 5 in Earth Sciences & Geology

I'm pretty sure I use the formula
square root of radius * gravity...but what else am I missing?

2007-08-10 05:00:51 · 1 answers · asked by benzene boy 1 in Physics

I am calculating the internal heat gains for appliances used in a school classroom. I can't find information on the heat produced by projectors.

2007-08-10 04:59:02 · 3 answers · asked by araber 1 in Engineering

2007-08-10 04:57:35 · 3 answers · asked by Anonymous in Zoology

I'm a beginner in oyster mushroom business so i need to have tips in proper maintenance of my fruiting bag. How can i have a better production? How often should i water the fruiting bag? Can i add something to the water to prolong the productivity of the fruiting bag? What's the best specification for the storage of the fruiting bag?

2007-08-10 04:56:43 · 2 answers · asked by ogine 1 in Agriculture

At times when my AC run for few hours, there is a formation of ice
on the evaporator coil and condenser coil...and coz of it there is no throw of cool air..pls help me to fix this problem.

2007-08-10 04:56:08 · 5 answers · asked by sri7_ram 2 in Engineering

2007-08-10 04:55:59 · 4 answers · asked by tea_anyone? 1 in Mathematics

2007-08-10 04:53:11 · 3 answers · asked by Anonymous in Earth Sciences & Geology

Find the equation of a line that has a y intercept of -4/5 and passes through the point (-2,5)?

^^ answer + directions please! ^^

2007-08-10 04:51:52 · 11 answers · asked by Kwan L 2 in Mathematics

Everytime they catch one they release millions of reproductive stuff to regroup. Is this going to get worse or better?

2007-08-10 04:50:58 · 14 answers · asked by Luv2no is in the house 7 in Zoology

what is the most dangorous animal on the earth? and is a hippo or shark more dangorous?

2007-08-10 04:48:29 · 15 answers · asked by Bball girl 1 in Zoology

2007-08-10 04:41:13 · 13 answers · asked by Anonymous in Paranormal Phenomena

like when there is a space flight or something and you see the actors all floating around? I know that one way to do this is to get into really high altitude and then let the plane free fall for a while but that wouldnt get you much time to film. are there any other ways?

2007-08-10 04:37:48 · 8 answers · asked by Anonymous in Astronomy & Space

Please I would love to know what it is because I hear people talking about wavelenghts and I would like to know what one is!

2007-08-10 04:37:29 · 4 answers · asked by Anonymous in Physics

design primer for PCR

2007-08-10 04:36:06 · 2 answers · asked by kaka 1 in Biology