Physics - December 2006

2006-12-27 07:45:59 · 5 answers · asked by JAMES 4

i need help on my science fair project and if you have other science projects dealing with sound that would be great.

2006-12-27 06:52:48 · 7 answers · asked by james s 2

Is that how time travel is possible?

2006-12-27 06:32:08 · 28 answers · asked by floof3r 3

2006-12-27 06:26:29 · 2 answers · asked by sych♥ 3

If the answer is radiation please explain how that works.

2006-12-27 06:10:49 · 9 answers · asked by Anonymous

What are all the elements of light?

2006-12-27 05:57:45 · 4 answers · asked by Anonymous

I've heard that other animals can see more colors than we humans can. If so, what are the colors like?

2006-12-27 05:44:05 · 6 answers · asked by Robby_G 2

Example: Substance/device A attracts substance/device B. However, A remains stationary and unaffected while B is attracted by A and therefore moves towards A. In the meantime A is not anchored or immobilised in any manner.

2006-12-27 05:14:01 · 9 answers · asked by Anonymous

2006-12-27 04:57:17 · 12 answers · asked by Anonymous

2006-12-27 04:41:21 · 9 answers · asked by Anonymous

Newton's first law-Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

Newton's second law-The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector.

Newtons third law-For every action there is an equal and opposite reaction.

2006-12-27 04:37:03 · 5 answers · asked by Brandy 1

Think of the trick of pulling a tablecloth off a completely set table. Based upon what you know about force, describe what happens and why.

2006-12-27 04:12:41 · 5 answers · asked by Brandy 1

why do your weight change as the time of da day change? does the weight increase or decrease?? and most importantly......WHY?? (not about food, it's have somethiing to do with gravity) please help me. i really need to know this =]

2006-12-27 04:07:28 · 3 answers · asked by Anonymous

I plotted a graph of logL against logT and the conatant a and b was determined.I was to compare the constant with another constant using the method of least squares and center of gravity.From the calculations, the intercept on y axis did not match with that using the formula.I will like to know why

2006-12-27 03:53:01 · 1 answers · asked by osae p 1

For oscillations: omega^2 x amplitude = acceleration, i thought it should be acceleration=-omega^2xdisplacement.
Is displacement always equal to displacement?
Where is the negative sign and when do we have to take into consideration the negative sign?

I totally cannot understand how the equations are used in the topic oscillations are used and i always fail with 0 marks cause i don't even know what formula to use, can someone please explain to me.

like i saw v=+/- (omega x square root of x0-x^2) what is x0?
and why i see another formula for velocity to be -x0sin(omega x t)
where t=time???

HELP, i can't understand and is suffering from a mental breakdown at the moment.

Please reply fast!!!

2006-12-27 03:36:34 · 2 answers · asked by Anonymous

2006-12-27 03:05:11 · 23 answers · asked by seg1802 2

when a "superball" is dropped, can it rebound to a height greater than its original height? explain.

2006-12-27 02:52:14 · 6 answers · asked by Luis M 1

What happens to the gravitational potential energy when water at the top of a watefall falls to the pool below?

2006-12-27 02:49:26 · 6 answers · asked by Luis M 1

I hate the book because of the religious mistakes which, according to my humble knowledge, are more than enough to send a person to hell; but I suspect that anyone who is sloppy with one part of a book is sloppy with other parts. Cana nyone point out obvious scientific mistakes he made? Really obvious.

2006-12-27 02:43:52 · 1 answers · asked by 0 3

Oscillation problem: A vertical spiral spring has its lower end attached to a fixed horizontal surface and theupper end carries a platform. Assume that the mass of the spring and the platform is negligible. The force required to produce unit compression in the spring is k.
A mass of mass m has been placed on the platform and equilibrium position is reached distance d below before placing the mass.
The mass is then pushed down through a short distance x, and released, and vertical simple harmonic motions take place.

If m=6.0kg and k=1000Nm^-1, calculate the maximum amplitude of the oscillation if the mass is just to remain in contact with the platform at all times. Explain carefully how you obtain your answer.

I don't understand the topic oscillations at all, please try to explain to me. Please try to be more patient and explain the concepts, no answers in numerical form are needed but they help to explain.

2006-12-27 02:18:18 · 2 answers · asked by Anonymous

2006-12-27 01:49:41 · 6 answers · asked by Anonymous

2006-12-27 01:48:25 · 10 answers · asked by mansi k 2

What condition does the Universe tend toward? (I know, big question)
I think it's equilibrium. Balance of some definition or other. Does anyone have the scientific lingo for this theory? Please be specific as possible. Does balance or equilibrium denote a finite number of principles that are being equalized. Is my thinking totally off on this subject? THANK You in advance!

2006-12-27 01:40:40 · 6 answers · asked by vicarious_notion 3

Be specific...but not too mechanical...remember... hasn't been invented yet...so no..clapper...or...sensors..make it original!! My electric bill is way too high...let's get you patented!

2006-12-27 01:38:22 · 15 answers · asked by buggie 3

well, my topic is WHY DO BOOMEANGS COME BACK and
for the procedure part, i'm a little stumped. can u help me?

2006-12-27 01:20:17 · 6 answers · asked by Anonymous

how come when 3 different parallel colors pass through the same prism, they exit parallel still?they have different wavelengths so they should exit unparallel the way as white light disperse.

2006-12-27 01:00:37 · 10 answers · asked by wert c 1

2006-12-26 23:48:40 · 5 answers · asked by texrad 2

2006-12-26 23:35:11 · 11 answers · asked by Anonymous

2006-12-26 23:10:49 · 12 answers · asked by ALAN K 1

Is invention of time machine possible ... and what is the principle behind it ... how it can alter the time.....by ne way is it related to
Enstein theory of relativity ???

2006-12-26 21:41:04 · 15 answers · asked by miinii 3