Science & Mathematics - 30 July 2007

1. If you add a few chunks of ice to a tstyrofoam container with water and do not stir it, then teh temperature of the mixture would be significantly higher than the expected 0 degrees C. Please explain what is happening.

2. Two objects are made from the same material. They have different masses and temperatures. If the two are placed in contact, will they experience the same temperature change.? if not, then which object will experience the greater temperature change?

2007-07-30 06:36:58 · 2 answers · asked by Sandesh R 1 in Physics

2007-07-30 06:33:54 · 4 answers · asked by Anonymous in Astronomy & Space

Particle A and Particle B are held together with a compressed spring between them. When they are released, the spring pushes them apart, and they fly off in opposite directions, free of the spring. The mass of A is 2.00 times the mass of B, and the energy stored in the spring was 60 J. Assume that the spring has negligible mass and that its stored energy is transfered to the particles. Once the transfer is complete, what are the kinetic energies of (a) particle A and (b) particle B

2007-07-30 06:32:59 · 3 answers · asked by Allan C 1 in Physics

..i think of all the places still unexplored, just waiting to be discovered! think of what lives there!

2007-07-30 06:29:39 · 12 answers · asked by Anonymous in Astronomy & Space

http://www.youtube.com/watch?v=C9runNgtTb0&mode=related&search=

2007-07-30 06:29:07 · 9 answers · asked by Anonymous in Astronomy & Space

I need to find a way to create electricity to power my house from scratch. I am doing a really dangerous experiment but I am willing to risk it.

2007-07-30 06:26:13 · 9 answers · asked by Crissy Snow 2 in Engineering

I sometimes have to listen to the shipping forecast on 198 longwave when it rudely interupts the cricket coverage. Whilst listening I often hear Cromerty and Dogger mentioned among other wierd references. Could you please describe their meaning plus any other regular references refered to in these forecasts. Thanks very much.

2007-07-30 06:26:06 · 1 answers · asked by Anonymous in Weather

if the mass of an object is 80n and the force is 4n what is the acceleration?

2007-07-30 06:25:45 · 4 answers · asked by intelligent girl 2 in Physics

Roughly, how far into the future do you think it will be before mankind makes a trip to another solar system or developes a faster-than-light spacecraft?

2007-07-30 06:24:24 · 7 answers · asked by Sherry 1 in Astronomy & Space

Maybe I should ask Guiness??

2007-07-30 06:11:39 · 6 answers · asked by jimppanzee 2 in Geography

*continuation of the question: the sphere if the possible error in measurement of circumference is 0.6 cm. Give your answer in two decimal places.
The answer should be 2.22%.

2007-07-30 06:11:05 · 3 answers · asked by Karen 2 in Mathematics

I would like to buy a tracking/goto telescope that I could use CCD Camera with. Any price. Good magnification and resolution. To look at planets the Moon and bright Messier objects.

2007-07-30 06:09:23 · 7 answers · asked by Anonymous in Astronomy & Space

2x+3y=??
good luck

2007-07-30 06:08:17 · 5 answers · asked by hjhafhag 1 in Mathematics

2007-07-30 06:04:21 · 7 answers · asked by jrivera_e17 2 in Zoology

2007-07-30 06:03:04 · 12 answers · asked by Norman L B 1 in Astronomy & Space

2007-07-30 05:59:37 · 5 answers · asked by Anonymous in Engineering

1. When developing the expression for the angular momentum of a particle, a step occurs where mv × v is set to zero. The reason for this is... v = 0, the cross product of a vector with itself is zero, m = 0?
2. The torque can be expressed as the time rate of change of the.... moment of inertia, linear momentum, angular momentum?
3. In the “Newton’s second law in angular form", τnet is... the torque due to all forces, the torque due to external forces only, the torque due to internal forces only?
4. When the angular momentum changes, the change in the angular momentum vector is.. parallel to the force vector, parallel to the angular momentum vector, parallel to the torque vector?

2007-07-30 05:54:03 · 1 answers · asked by A 2 in Physics

Gravity is due to the warping of space-time. Unlike the strong, weak and electro magnetic forces (whos nature is unknown), gravity it cause by the shape of space, so why is it still refered to as one of the forces along with the others?

2007-07-30 05:46:51 · 8 answers · asked by wisemancumth 5 in Physics

i am left handed but i do things like throw ight handed i cannot do with left. I am not ambedextrous as i cannot do same thing with both hands what do you call it?

2007-07-30 05:46:11 · 3 answers · asked by Anonymous in Biology

hello;
i need to learn calculus (integration and differentiation) by my self, do you konw which book i can read ?
thanks

2007-07-30 05:45:13 · 5 answers · asked by sndbad 1 in Mathematics

I am wanting to have an outdoor wedding on this date.

2007-07-30 05:43:11 · 7 answers · asked by Anonymous in Weather

Determine whether each of the following is a trinomial square.

1. x^2-14x + 49

2. x^2-10x - 25

3. 36x^2-24x+16

4. 16x^2-40xy+25y^2

5. 9x^2 - 36x + 24

Factor completely. Remember to look first for a GCF and to check by multiplying.

1. x^2+4x+4

2. x^2-20x+100

3. 64+16x+x^2

4. 9x^2 - 42x + 49

5. 36x^2+96xy+64y^2

2007-07-30 05:42:43 · 8 answers · asked by Sunshine 1 in Mathematics

2007-07-30 05:42:37 · 1 answers · asked by dragonfly7204 1 in Medicine

perform the indicated operation

2007-07-30 05:39:11 · 10 answers · asked by Anonymous in Mathematics

I have been to google maps but i want something that can really zoom in close to a location. Is there any websites that can do this?

2007-07-30 05:38:18 · 22 answers · asked by LT. DAN 4 in Astronomy & Space

2007-07-30 05:37:26 · 9 answers · asked by damilola o 1 in Mathematics

Is plutonium man-made or organic? How do they get it?

2007-07-30 05:35:36 · 2 answers · asked by Anonymous in Chemistry

I have several pepper plants growing and i am wondering whether it's possible to take branches from the pepper plants and graft them onto a single pepper plant. All of the peppers i want to graft are from the same genus.

2007-07-30 05:34:22 · 1 answers · asked by Anonymous in Botany

2007-07-30 05:22:48 · 4 answers · asked by Anonymous in Physics

What is the job called when you work with sharks. And how many different jobs can you have with them.

2007-07-30 05:19:21 · 3 answers · asked by Riley 3 in Zoology