Science & Mathematics - 23 November 2007

2007-11-23 03:38:06 · 16 answers · asked by ? 2 in Astronomy & Space

My language consists of 0/1/2/3/4/5/6/7/8/9 .
Zip codes identifies towns, villages and cities. if I read 43138. I would be saying: Logan, OH

2007-11-23 03:35:24 · 3 answers · asked by blueridgemotors 6 in Mathematics

2007-11-23 03:34:26 · 4 answers · asked by isihan 1 in Engineering

A contract is to be completed in 46 days and 117 men were set to work, each working 8 hours a day. After 33 days 4/7 of the work is completed. How many additional men may be employed so that the work may be completed in time, each man now working 9 hours a day?

2007-11-23 03:32:58 · 4 answers · asked by suri 1 in Mathematics

I am stuck on this if someone can help me with it I thank you.

2007-11-23 03:29:29 · 2 answers · asked by Anonymous in Mathematics

Help please......... somebody.... help.....

How do you demonstrate that v at t = t0 ????

given that s(t) = 1.3t^2 + 7.8t

2007-11-23 03:28:49 · 4 answers · asked by Anonymous in Mathematics

nobody ever asks parapsychology questins, but when they do, so many people answer?

2007-11-23 03:23:29 · 8 answers · asked by Dr. Science Freak III 2 in Parapsychology

2007-11-23 03:22:59 · 2 answers · asked by suman s 1 in Mathematics

i tried everything i tried the pathagorians theorem and it didnt work. how on earth can i do this problem???

A snowball is launched horizontally from the top of a building at v = 11.4 m/s. If it lands d = 33 meters from the bottom, how high (in m) was the building?

2007-11-23 03:19:39 · 4 answers · asked by molly 1 in Physics

I've been reading about astral projection and encountered the word 'etheric.' What is the etheric part of the human consciousness and how does it differ from the astral self?

2007-11-23 03:17:01 · 5 answers · asked by Anonymous in Parapsychology

I cant remember why. It's 4.15 and the moon is out and so is the sun. It's been like that all day and it's a full moon but yet a blue sky.

Why is the moon out and where will it go tonight ;-)?!

2007-11-23 03:11:36 · 4 answers · asked by Anonymous in Astronomy & Space

2007-11-23 03:10:32 · 8 answers · asked by datfreshness 1 in Mathematics

dissadvantages,advantagesand ow it is produced

2007-11-23 03:09:48 · 2 answers · asked by ? 1 in Other - Science

2007-11-23 03:07:56 · 2 answers · asked by girl 4 in Medicine

(If more than one, then the follow-up question is "When did you first know you were a geek?")

2007-11-23 03:03:58 · 2 answers · asked by Scotty Doesnt Know 7 in Astronomy & Space

The earth orbits the sun once a year (3.16e10^7 s) in a nearly circular orbit radius 1.50e10^11 m. With respect to the sun, determine the angular speed of the Earth in rad/s.

OK, so angular speed = change in theta/ change in time.

for theta I got 2(pi)r. Is that not right?

Help, please.

2007-11-23 02:59:00 · 3 answers · asked by frosty 2 in Physics

2007-11-23 02:58:17 · 2 answers · asked by I know.™ 2 in Geography

2007-11-23 02:58:12 · 7 answers · asked by Anonymous in Physics

A projectile is launched at an angle of 35° above the horizontal with a speed 107 m/s. At the highest point in its trajectory, the vertical displacement above the ground is?

2007-11-23 02:53:02 · 4 answers · asked by molly 1 in Physics

I need to figure out if the infinite series of n^2*(-1)^n converges or diverges. It seems like it would diverge since n^2 is always increasing but I don't see how I can prove it with any of the tests that I know of since the alternating series test fails.

2007-11-23 02:52:57 · 4 answers · asked by aberrantgeek 3 in Mathematics

2007-11-23 02:50:09 · 13 answers · asked by simplesimon 5 in Weather

An airplane has an air speed of 126 m/s and flies due North, but the wind is to the East at 56 m/s. What is its actual ground speed (in m/s)?

2007-11-23 02:48:25 · 3 answers · asked by molly 1 in Physics

28n+28q+32q+32n

A.(30+q) (30 +n)

b.60 (n+q) (n+q)

c.60nq

d.60 (n+q)

2007-11-23 02:46:36 · 5 answers · asked by Anonymous in Mathematics

2007-11-23 02:38:12 · 16 answers · asked by Anonymous in Other - Science

I am looking for a science fair project, perferably at a middle school level. It can be under any subject. I would like it to be something simple, not to complicated but at the same time something with alot of information because I have to have four pages of handwritten notes for my project notebook. So if you can PLEASE HELP ME! I need an idea and design AS SOON AS POSSIBLE!. I am NOT asking for a project that is already done, just aome ideas and HELP!!! Thank-you :)

2007-11-23 02:36:43 · 6 answers · asked by apple crisp 1 in Other - Science

The twin paradox of relativity is resolved by pointing out that there are three frames of reverence not two. The earth remains in one the whole time of the twin's ship's travels. But the space ship starts in one frame and then when it turns around it changes its frame of reference.

Refer to classic Twin Paradox at wikipedia

The standard explanation works so long as the ship turns around. What happens if the ship travels only one way and upon arriving, decelerates and again rejoins the frame of reference of the earth. Adjusting for simultaneous time with earth, the traveling twin has still aged only half the time as the twin on earth. Why is the slower time dilation assigned to the traveling twin, when the earth was speeding away from the ship as fast as the ship was speeding away from the earth.

If answering, be careful. Try not to be confused by the distance between the ship and the earth. Imagine simultaneous clocks on earth and at the ship's destination placed long ago.

2007-11-23 02:31:11 · 4 answers · asked by jerrywickey 2 in Physics

Isent there too much nonsense to form a human and operate the functions

2007-11-23 02:18:00 · 4 answers · asked by Anonymous in Physics

Jean, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from Dulles Airport. She notices that the string makes an angle of 27° with respect to the vertical while the aircraft accelerates for takeoff, which takes about 20 seconds. Estimate the takeoff speed of the aircraft.

2007-11-23 02:08:28 · 3 answers · asked by swisscheese 1 in Physics

the carnival ride has a 2.0m radius and rotates once of a rider.
a)find the speed of a rider.
b)find the centripetal accleration of a rider
c)what produces this accleration?
d)when the floor drops down, riders are held up by friction. draw motion and free body diagrams of the situtation
e)what coefficient of static friction is needed to keep the riders from falling?

2007-11-23 02:05:29 · 1 answers · asked by peipei91189 1 in Physics

2007-11-23 02:05:03 · 1 answers · asked by STUDY 3 in Engineering