Science & Mathematics - 23 September 2006

Where do you start to solve this one.

2006-09-23 05:02:33 · 8 answers · asked by Jamie B 1 in Mathematics

certain neutron stars(extremely dense stars) are believed to be rotating at about one revolution per second . if such a star has a radius of 20km, what must its minimum mass be so that objects on its surface will still be attracted to the star and not be "thrown off" by the rapid rotation?

2006-09-23 05:02:29 · 4 answers · asked by Anonymous in Physics

1.) A 95-meter long train begins uniform acceleration from rest. The front of the train has a speed of 25 meter/second when it passes a railway worker who is standing 180 m from wherer the front of the train started. What will be the speed of the last car as it passes the worker.

2.) A stone is dropped from the roof of a high building. A 2nd stone is dropped 1.50 seconds later. How far apart are the stones when the 2nd one has reached a speed of 12.0 meters/second.

3.)Two students are asked to find the height of a particular building using a barometer. Instead of using the barometer as an altitude-measuring device , they take it to the roof of the bulding and drop it off, timing its fall. One student reports a fall time of 2.0 sec., and the other, 2.3 sec.. How much difference does the 0.3 sec make for the estimates of the building's hieght.

2006-09-23 05:01:31 · 3 answers · asked by Anonymous in Weather

the weight of an apple near the surface of the Earth is 1N. what is the weight of the Earth in the gravitational field of the apple?

2006-09-23 05:00:46 · 3 answers · asked by Anonymous in Physics

2006-09-23 05:00:39 · 23 answers · asked by Anonymous in Astronomy & Space

What are they?

2006-09-23 04:59:33 · 5 answers · asked by Anonymous in Mathematics

1,3,5,7,9
1,8,24,48,80
1,25,122,341,727,
1,78,253,622,2398,6558
What are the next two lines ?
Fastest answer gets 10 pts!

2006-09-23 04:58:01 · 7 answers · asked by easyboy 4 in Mathematics

2006-09-23 04:57:47 · 11 answers · asked by Anonymous in Zoology

2006-09-23 04:53:47 · 5 answers · asked by mspeanut01 1 in Mathematics

What animal is funny, tall, smart, and has thick hair? Can be any kind of animal.

2006-09-23 04:52:14 · 12 answers · asked by Derek 1 in Zoology

2006-09-23 04:51:17 · 10 answers · asked by Anonymous in Other - Science

2006-09-23 04:48:14 · 1 answers · asked by SP!DEY ! 2 in Biology

2006-09-23 04:41:23 · 6 answers · asked by Mimi 2 in Mathematics

2006-09-23 04:38:58 · 6 answers · asked by mspeanut01 1 in Mathematics

2006-09-23 04:38:53 · 23 answers · asked by Kat W 2 in Astronomy & Space

2006-09-23 04:36:49 · 8 answers · asked by marin l 1 in Mathematics

2006-09-23 04:34:36 · 18 answers · asked by petey1jo 1 in Other - Science

2006-09-23 04:30:57 · 9 answers · asked by goring 6 in Physics

2006-09-23 04:30:06 · 5 answers · asked by goring 6 in Astronomy & Space

a.x>=8.2
b.x>=24.6
c.x<=1
d.x<=4.5
e.x<=7.2

2006-09-23 04:26:11 · 6 answers · asked by Anonymous in Mathematics

When (19x - 8)/(2x^2 - x - 21) is decompossed into partial fractions, what is the sum of the numerators when each fraction is reduced to lowest terms?

2006-09-23 04:21:24 · 3 answers · asked by Sasha 2 in Mathematics

2006-09-23 04:18:09 · 8 answers · asked by cheesehead 3 in Biology

2006-09-23 04:18:03 · 4 answers · asked by Gina C 2 in Mathematics

a.r<13/40
b.r<6.884
c.r>8
d.r>44
e.r>-43
f.r<0.187

2006-09-23 04:10:27 · 7 answers · asked by Anonymous in Mathematics

Einstein relativitic mass increases with velocity.

However; Dr. Carezani Relativistic mass decreases as the chemical mass structure moves faster.

Newton's laws of motion indicates no change of mass as a mass structure moves.

Which laws of motion are more realistic?

2006-09-23 04:09:51 · 1 answers · asked by goring 6 in Physics

a.y<=7/36
b.y>=1/9
c.y<=-36/7
d.y>=9
e.y>=27/28
f.y<=-1/28

2006-09-23 04:08:55 · 8 answers · asked by Anonymous in Mathematics

2006-09-23 04:08:10 · 5 answers · asked by Anonymous in Physics

2006-09-23 04:07:49 · 9 answers · asked by Sarah 3 in Chemistry

1. it gives off more heat that the sun provides
2. it's mostly gas (if not all)

(move over Pluto)

2006-09-23 04:06:59 · 8 answers · asked by Anonymous in Astronomy & Space

2006-09-23 04:03:03 · 8 answers · asked by falsman14 2 in Zoology