Physics - March 2007

what is meant by this?

2007-03-09 02:14:22 · 2 answers · asked by Anonymous

2007-03-09 02:10:50 · 4 answers · asked by priya 1

My project is demonstrating the right hand rule with the use of parallel and anti parallel currents through metal rods. Im using a car battery as a power source. (12V) BUt it doesnt work. Maybe its the low voltage... ANy ideas on how am I gonna make it work?

2007-03-09 02:10:28 · 3 answers · asked by Little Learner 2

2007-03-09 02:07:52 · 3 answers · asked by AngeL_05 1

2007-03-09 02:01:14 · 5 answers · asked by AngeL_05 1

2007-03-09 01:54:23 · 1 answers · asked by Becca M 1

2007-03-09 01:44:47 · 6 answers · asked by Anonymous

A 0.5 kg stone is moving in a circular path attached to a string that is 75 cm long. The stone is moving around the path at a constant freq 0f 1.5 rev/sec. At the moment the stone is overhead, the stone is released. The velocity of the stone when it leaves the circular path is???

please help me. thanks!!

2007-03-09 01:41:50 · 2 answers · asked by Anonymous

hi
i wanted to know why "temperature coefficient of resistivity" (α)rises in high tempretures ?
tungesten α ( 0-100 C ) : 0.0046
but :
T1 = 20 ˚C R1 = 5.5
T2 = 3227 ˚C R2 = 108.5
then the α would be around 0.0058

2007-03-09 01:40:16 · 1 answers · asked by Myself 1

if P = M x V,
and the mass of a photon is zero, then regardless of its speed it should have zero momentum, but i read that light has momentum.

2007-03-09 01:28:41 · 7 answers · asked by Anonymous

i have a gun and i shoot it up perpendicular to gravity. at a particular time, velocity will be 0. then wen it comes back down, will it gain the velocity with which we shot the bullet?
plz justify answers..................

2007-03-09 01:27:37 · 4 answers · asked by Anonymous

2007-03-09 01:27:19 · 1 answers · asked by crickwiz 2

2007-03-09 01:17:54 · 3 answers · asked by ganesan d 2

I've got 9.6*10*-3, i've been dividing the area of a piece of graphite by the gradient of the graph- if 9.6*10*-3 isnt right then how do you work out the resitivity of graphite?

2007-03-09 00:59:43 · 3 answers · asked by Mark 2

we have this assignment to come up with magic tricks that will better illustrate these topics: speed and velocity, planetary movements,science processes(hypothesizing,inference,observing), the rock cycle and the adaptation of plants and animals. I only have three days left!!!!

2007-03-09 00:43:41 · 1 answers · asked by LuCkY 2

2007-03-09 00:37:36 · 2 answers · asked by Anonymous

What wavelenght is being used to define light when calculating it's speed. Light is made up of a spectrum.
which of the colours (wavelenglts )in the spectrum is used to measure it's speed? Whole point to this question is finding a possible lazer head that can read any data and copy it onto a disc

2007-03-09 00:32:08 · 8 answers · asked by John H 2

Some scientists speculate that our universe is infinite.

That is, they can find no beginning or end to it.

If this were true, heaven could not exist because nothing can exist outside the limits of all that there is.

Either infinity is everything, or it is not.

2007-03-09 00:02:24 · 5 answers · asked by Anonymous

2007-03-09 00:00:54 · 14 answers · asked by Anonymous

Person is running neck to neck with light and holding mirror in his hand.

2007-03-08 23:57:21 · 15 answers · asked by Piyush 1

This question is from my physic assignment.
I hope tat someone will give me a good answer.
Thanks.

2007-03-08 23:55:59 · 4 answers · asked by kadablue 1

2007-03-08 23:46:47 · 3 answers · asked by Anonymous

How can I estimate the probability that a Hydrogen atom at room temperature is in one of its first excited states (relative to the probability of being in the ground state). "Don't forget to take degeneracy into account"

2007-03-08 23:45:04 · 1 answers · asked by chica1012 2

Why or why not. And I assure you, this is not someone's homework. Thanks.

2007-03-08 23:32:13 · 4 answers · asked by Dovey 7

If time stopped, should light be moving?

On the other hand, if light wasn't moving at the speed of light, then time would never stop, right?

If time were stopped, it would be the same as freezing time.
If you froze time, shouldn't there be nothing going on?

Case in point:

Going the speed of light = time stops. Time stops = nothing changes, it always stays the same? But how is this possible if light is still moving at the speed of light?

Perhaps time is not really stopping?

Are we wrong about the theory of time?
Is this why there has not been a workable time machine invented yet?

2007-03-08 23:30:40 · 6 answers · asked by Anonymous

electron is very small massive particle;
atoms,nucleii,radiation

2007-03-08 23:26:05 · 3 answers · asked by Anonymous

2007-03-08 22:52:15 · 1 answers · asked by Anonymous

2007-03-08 22:48:44 · 1 answers · asked by Anonymous

2007-03-08 22:43:20 · 3 answers · asked by Anonymous

I have 2 questions concerning Einstein. It needs knowledge of the history of Einstein.

Did Einstein came up with another equation "E=mc(2)-mc(2)"?

(2) means squared here.

Did he say "God does not play dice." when he refuted Neils
Bohr's theory of Quantum Physics?

2007-03-08 22:38:26 · 6 answers · asked by Anonymous