Science & Mathematics - 29 July 2007

2007-07-29 21:08:40 · 2 answers · asked by Anonymous in Engineering

2007-07-29 21:02:40 · 1 answers · asked by smile_sakthi2002 1 in Botany

2007-07-29 20:47:52 · 1 answers · asked by Anonymous in Engineering

i knew the population was more in Turkey, but which country is just larger? i couldnt find it online, and i didnt want to use any tool on google earth because i donnt think it will be clear, just looking at a map or atlas didnt really show it either

2007-07-29 20:39:57 · 6 answers · asked by barankicksass 1 in Geography

Two blocks (1st 1 from left to right 25kg, 2nd one 5kg) are connected by a cord on a horizontal. A force of 120N pulls on the blocks towards the right. Find the acceleration of the blocks and the tension in the connecting cord if (a) the surface is frictionless, and (b) the coefficient of kinetic friction is 0.20

2007-07-29 20:36:58 · 3 answers · asked by Mafia Agent 4207 5 in Physics

I am looking for reasonable answers based on good statistical work.

2007-07-29 20:32:36 · 1 answers · asked by Lynx1998 1 in Biology

"A 5.2 kg stone is tied to a 4.7 m long string and swung around a circle at a constant angular velocity 7.6 1/s. Find the magnitude of the torque about the origin."
Torque is Inertia*angular acceleration, so 5.2kg*(4.7m)^2*7.6rad/s^2, it was 872.9968 but it's not correct. What did I make a mistake? Please explain to me. Thank you.

2007-07-29 20:31:10 · 2 answers · asked by Anonymous in Physics

2007-07-29 20:28:11 · 29 answers · asked by Anonymous in Weather

2007-07-29 20:22:55 · 8 answers · asked by Marlou G 1 in Astronomy & Space

900, 1000, 1100, 1200 ?

2007-07-29 20:19:20 · 11 answers · asked by dynamitesi 3 in Mathematics

2007-07-29 20:19:15 · 3 answers · asked by Navdeep D 1 in Physics

How many combinations are there of 12 symbols using 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, A, B, C, D, E, F.

2007-07-29 20:18:07 · 5 answers · asked by Anonymous in Mathematics

Like was there a specific reason they were made?

2007-07-29 20:16:37 · 4 answers · asked by chey_the_princess 2 in Astronomy & Space

2007-07-29 20:14:23 · 5 answers · asked by parama b 1 in Chemistry

2007-07-29 20:11:04 · 6 answers · asked by Anonymous in Engineering

2007-07-29 20:10:18 · 19 answers · asked by tiggz001 1 in Mathematics

2007-07-29 20:08:14 · 5 answers · asked by tiggz001 1 in Mathematics

2007-07-29 20:07:32 · 12 answers · asked by Anonymous in Physics

2007-07-29 20:05:49 · 3 answers · asked by bern 1 in Physics

2007-07-29 20:04:31 · 18 answers · asked by jeremy37211 1 in Mathematics

An ideal gas is in contact with a heat reservoir so that it remains at a constant temperature of 300 K. The gas is compressed from a volume of 29 L to a volume of 17 L. During the process the mechanical device pushing the piston to compress the gas is found to expend 5 kJ of energy. What is the magnitude of the heat flow between the heat reservoir and the gas and in what direction does the heat flow occur?

2007-07-29 20:01:00 · 3 answers · asked by Sandesh R 1 in Physics

A diver rises quickly to the surface from a 8-m depth. If she did not exhale the gas from her lungs before rising, by what factor would her lungs expand? Assume the temperature to be constant and the pressure in the lungs to match the pressure outside the diver's body. The density of seawater is 1.03 times 103 kg/m3.

2007-07-29 19:56:16 · 2 answers · asked by Sandesh R 1 in Physics

Solve the DE

(dy/dx) - y = e^(x) * y^(2).

Once again, I have already (attempted to) solve this, but am not sure whether correct or not! :)

2007-07-29 19:55:50 · 2 answers · asked by amckee851 1 in Mathematics

what is the scientific reason behind it??

thank you..

2007-07-29 19:55:23 · 3 answers · asked by RoChEr 5 in Other - Science

i mean lecture notes

2007-07-29 19:53:14 · 2 answers · asked by Anonymous in Engineering

dy/dx = (x+3y)/(3x+y).

I have already solved this DE - am not too sure whether I am correct (or not)!

Thx

2007-07-29 19:51:58 · 2 answers · asked by Anonymous in Mathematics

According to Newton's 3rd law, every action has an opposite and equal reaction, but I do not understand how anything in space can go anywhere if nothing can push back since there is no friction. If a spaceship puts on its boosters they wouldn't have anything to push against which would make propulsion in a frictionless environment impossible. Obviously this is not the case. Please help.

2007-07-29 19:51:33 · 6 answers · asked by Sean-Erik O 2 in Astronomy & Space

3 Questions, an answer to any would be great.

1. How fast does heat conduct in air?
2. How many times faster does heat conduct in water than air?
3. How many times faster does heat conduct in a solid than in air? (eg a plank of wood and a piece of metal)

2007-07-29 19:41:16 · 6 answers · asked by C4 Snake 3 in Physics

what is moon

2007-07-29 19:40:26 · 7 answers · asked by meenu 1 in Astronomy & Space

does anybody have and info on what kinds of ingestibles are out there to change my epigentics, examples food, medication, maybe even exercise.

I'm just looking really for opinions about the manipulation of epigentics

2007-07-29 19:34:22 · 1 answers · asked by Mercury 2010 7 in Biology