Science & Mathematics - 11 February 2007

Since sound waves travel through the air, and there's no air on the moon, how can I hear any sound even if I'm right next to a noise maker...

2007-02-11 20:24:50 · 8 answers · asked by Cesar A 1 in Astronomy & Space

2007-02-11 20:22:40 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2007-02-11 20:21:23 · 9 answers · asked by Anonymous in Earth Sciences & Geology

2007-02-11 20:20:15 · 4 answers · asked by Reen 1 in Chemistry

I do mean cocaine, just curious.

2007-02-11 20:17:18 · 4 answers · asked by gLoRiiA 2 in Other - Science

Can you name few free sources for online Audio / Video Lectures on Introductory Statistics?

2007-02-11 20:00:51 · 2 answers · asked by Sham 2 in Mathematics

1, what is the chemicl reaction in blood
2, what will be the result
3, does it harm the human
4, what will be the physical and mental position of the person after the milk is injucted

2007-02-11 20:00:31 · 7 answers · asked by Amutham 1 in Biology

The mirror in the bathroom my hair never looked better. Ten feet away the mirror in my bedroom it looks like crap. Can mirrors be made out of a different kind of glass to give off different reflections?

2007-02-11 19:59:54 · 2 answers · asked by Professor Armitage 7 in Other - Science

2007-02-11 19:59:36 · 9 answers · asked by Anonymous in Chemistry

Any new details about black hole?

2007-02-11 19:57:47 · 7 answers · asked by Moharajan M 1 in Astronomy & Space

My TA and professor are almost virtually inaccessible and this book says absolutely NOTHING on anything but "final velocity - initial velocity / time"...
...or, if you could explain it using numbers...

An object traveled .239 meters in 2.10295 seconds. What is the acceleration?

Thanks...

2007-02-11 19:57:28 · 7 answers · asked by Telkandore 2 in Physics

One revolution of the earth constitutes a 24 hour day. So, if the astronauts travel around the earth faster than the earth revolves in a 24 hour period, how is their time arrived at? And, just for fun, do they age faster?

2007-02-11 19:53:44 · 6 answers · asked by Anonymous in Astronomy & Space

2007-02-11 19:53:39 · 3 answers · asked by L. 3 in Other - Science

E F 6
x D 7
=
DDFD
+JED
=
HGED


Each letter represents a different digit.

2007-02-11 19:51:55 · 7 answers · asked by Anonymous in Mathematics

I'm trying to find out what my share is of the electric bill

2007-02-11 19:49:45 · 3 answers · asked by turkeytrot38 1 in Engineering

A student tries to raise a chain consisting of three identical links. Each link has a mass of 380 g. The three-piece chain is connected to a string and then suspended vertically, with the student holding the upper end of the string and pulling upward. Because of the student's pull, an upward force of 15.0 N is applied to the chain by the string. Use Newton's laws to answer the following questions.

a. Find the acceleration of the chain.
Take the free fall acceleration to be g = 9.80 m/s^2.


b. Find the force exerted by the top link on the middle link.


feel free to add me on your messenger list so that you can explain the problem step by step if it is difficult to do so on here. any free-body diagrams will help :) thanks a lot.

2007-02-11 19:48:44 · 5 answers · asked by Anonymous in Physics

Do not use Lagrange method.



I wrote the equation again here:

y'' - 4*y' + 5*y = 2*x*e^(2x)

2007-02-11 19:48:13 · 3 answers · asked by Anestis 2 in Mathematics

2007-02-11 19:39:56 · 5 answers · asked by BMB 1 in Biology

In star trek, a machine called a replica is allegedly capable of rearrnaging matter to create new matter such as turning a clump of copper into food, water, air, or furniture.

Is such technology theoretically possible with Heisenberg's Uncertainty Principle?

2007-02-11 19:39:31 · 11 answers · asked by Anonymous in Physics

2007-02-11 19:37:14 · 2 answers · asked by prs1145 1 in Physics

2007-02-11 19:34:48 · 4 answers · asked by BMB 1 in Biology

2007-02-11 19:34:46 · 2 answers · asked by Nata 1 in Engineering

2007-02-11 19:31:43 · 6 answers · asked by Anonymous in Astronomy & Space

2007-02-11 19:31:07 · 7 answers · asked by P Ni Ka 3 in Other - Science

i am Civil Engineer doing autocad drafting work at home as part time job ,i wish to get more jobs

2007-02-11 19:30:07 · 1 answers · asked by karthigesu s 1 in Engineering

2007-02-11 19:30:06 · 3 answers · asked by P Ni Ka 3 in Mathematics

2007-02-11 19:29:57 · 3 answers · asked by simbionte 2 in Biology

. Sometimes the time I see in the mirror( a reflection of the actual time) is the same as the actual time. How many times does this happen per day? (ignore the colon, because I can't see that anyway-the clock is to far away.)

2007-02-11 19:26:04 · 2 answers · asked by Anonymous in Mathematics

2007-02-11 19:25:21 · 6 answers · asked by BMB 1 in Biology

2007-02-11 19:24:42 · 4 answers · asked by BMB 1 in Biology