Science & Mathematics - 23 September 2006

...using radius of roll minus tube radius and the dimentions (thickness, length etc) of one sheet?

2006-09-23 05:45:34 · 6 answers · asked by oliver j 1 in Mathematics

Sagar E

2006-09-23 05:45:25 · 7 answers · asked by Anonymous in Physics

2006-09-23 05:43:09 · 6 answers · asked by m58oake 1 in Astronomy & Space

If it was possible to open a window at 30,000 ft in a plane which was travelling at 1500 miles an hour and fire a rifle and the bullet also travels at 1500 miles an hour what would happen to the bullet. Would it just remain in the barrel or would it exit the barrel and now be travelling at 3000 miles and hour

2006-09-23 05:40:11 · 14 answers · asked by jas 2 in Physics

2006-09-23 05:36:19 · 5 answers · asked by mommy2be 2 in Astronomy & Space

2006-09-23 05:35:15 · 5 answers · asked by manno 1 in Engineering

Sagar E

2006-09-23 05:33:13 · 9 answers · asked by Anonymous in Physics

2006-09-23 05:32:36 · 4 answers · asked by exp 1 in Chemistry

somebody has to know i only know the first one.

2006-09-23 05:32:27 · 2 answers · asked by kellysa111 3 in Biology

Ans these quickly, fastest one to get 10 points. All the best !

1.What is half times half divided by half times half ?
2.1/2x12x1/2x1/2
3.1/4x1/4+1/4+1/4
4.1/3-1/3+1/2+1/4
5.1/8+1/8x1/8-1/8
6.1/16 in %
7.5/18 in %
8.1/33 of 100
9.1/33 of 100188987.6553
10.23/78 x 5/8

2006-09-23 05:31:39 · 3 answers · asked by easyboy 4 in Mathematics

compare it to one liter or mililiter or gramms

2006-09-23 05:29:54 · 4 answers · asked by Pikopolonca 1 in Mathematics

in france.

2006-09-23 05:28:04 · 4 answers · asked by robert o 1 in Geography

a gaseous emission from industry smokestacks and vehicle tailpipes,one of the main constituents of smog,formed on hot, sunny days when nitrogen oxides (NOx) and volatile organic compounds (VOCs) undergo a photochemical reaction,b. and c.,all of the these.

2006-09-23 05:20:31 · 3 answers · asked by SHUMUGANATHAN B 1 in Geography

2006-09-23 05:20:23 · 6 answers · asked by Cyara H 1 in Chemistry

2006-09-23 05:18:43 · 5 answers · asked by BOO! 2 in Biology

When things dissolve in water eg salt they fit in between the spaces between the water molecules, correct?
so would a liquid with a lower density than water allow more dissolution of the same substance eg salt?
And does it have to be liquid? whats the reason for why a low density wood is a bad solvent. I know its a stupid question but i cant get the answer!

2006-09-23 05:18:15 · 2 answers · asked by benabean87 2 in Physics

Ok.... The object is 2 put parenthese around some number(s) to get the answer 6. Please help.....here's the problem..... 36 divided by 4 + 5 - 7 +2 x 3 + 12 divided by 3 + 1............

2006-09-23 05:15:30 · 10 answers · asked by Anonymous in Mathematics

1.) You stand at the top of a cliff while your friend stands on the ground below you. You drop a ball from rest and see it takes 1.2 secs. for the ball to hit the ground below. Your friend then picks up the ball and throws it up to you, such that it just comes to rest in your hand. What is the speed with which your friend threw the ball.

2006-09-23 05:13:55 · 5 answers · asked by Anonymous in Physics

2006-09-23 05:13:52 · 2 answers · asked by Chicho 1 in Physics

2006-09-23 05:12:49 · 16 answers · asked by Melissa D 1 in Astronomy & Space

I am just suppose to choose one of the vast engeneering courses because I will join campus not long after. but I need someone to tell me some information about the two fields because I am really interested in those fields as well as electronics.If you also know about which of the two is most growing, you can give me some clue.

2006-09-23 05:12:27 · 5 answers · asked by Anonymous in Engineering

1.)A rocket rises vertically from rest, with an acceleration of
3.2 m/sec square until it runs out of fuel at an altitiude of 1200 meter.
After this point, its acceleration is that of gravity, downward.
(A.)- What is the velocity of the rocket when it runs out of fuel.
(B.)- How long does it take to reach this point?
(C.)- What maximum altitude does the rocket reach?
(D.)- how much time (total) does it take to reach maximum altitude?
(E.)- With what velocity does the rocket strike the Earth.
(F.)- How long (total) is it in the air?

2.)If there were no air resistance, how long would it take a free-falling parachutist to fall from a plane at 3200 meters to an altitude of 350 meters, where she will pull her ripcord? What would her speed be at 250 m? (in reality the air resistance will restrict her speed to perhaps 150 km/hr.)

2006-09-23 05:11:36 · 2 answers · asked by Anonymous in Physics

C3H5O9N3 -------> CO2 + N2 + O2 + H2O

2006-09-23 05:11:10 · 7 answers · asked by tigersfan48111 2 in Chemistry

999999
997999
996001
994005

What are the next two lines ?
Fastest answer gets 10 pts!

2006-09-23 05:08:35 · 6 answers · asked by easyboy 4 in Mathematics

2006-09-23 05:08:09 · 9 answers · asked by Anonymous in Mathematics

2006-09-23 05:07:29 · 4 answers · asked by Jayu P 1 in Physics

2006-09-23 05:06:58 · 4 answers · asked by Anonymous in Physics

2006-09-23 05:06:27 · 18 answers · asked by Labatt113 4 in Earth Sciences & Geology

I need to explain in my Science soursework why Wool is a good insulator for heat in very detailed scientific words. Can any1 help me out plzzzz. I also need to explain why Fur is better than Wool in insulating heat? This is becuz in a science experiment, I covered 2 test tubes filled with boiling water in those two materials (one material per test tube ) and Fur lost the least amount of heat. Wool did not lose a lot either therefore I know they are both good insulators I just need to explain why Wool is a good insulator but why Fur is an even better one???? plzzzz help me

2006-09-23 05:05:41 · 1 answers · asked by Anonymous in Other - Science

objects at rest on the Earth's surface move in circular paths with a period of 24hr. why are they not considered to be "in orbit" ? what would be the length of the day to put such objects in true orbits?

2006-09-23 05:03:52 · 5 answers · asked by Anonymous in Physics