Physics - November 2006

2006-11-28 20:49:12 · 4 answers · asked by no__one 1

what is happen in molecol while expansing a solid?

2006-11-28 20:25:18 · 3 answers · asked by sara s 1

2006-11-28 20:04:29 · 9 answers · asked by Anonymous

Secondary question: Has anyone ever invented a "gravitational shield"? I am not talking about anti-matter, nor anti-gravity, nor levitation. It is possible to build a "Faraday cage" to exclude all electromagnetic fields, but I want to know whether it is possible to build the equivalent for gravitational fields. All opinions are welcome.

2006-11-28 19:37:06 · 8 answers · asked by Mez 6

the incline is 200 m and the vertical height gained in moving this distance is 20 m. What is the magnitude of the force F if friction is negligible? (Assume g = 10 m/s2)

2006-11-28 19:32:59 · 3 answers · asked by applekarim 1

2006-11-28 19:25:42 · 4 answers · asked by applekarim 1

2006-11-28 19:23:35 · 3 answers · asked by applekarim 1

FIND ITS VELOCITY AND DISPLACEMENT AFTER 3.0 SECONDS?SHOW YOUR SOLU
TION

2006-11-28 18:29:02 · 4 answers · asked by Anonymous

so are the resonances of vibrating superstrings acoustic/harmonic? or would they be mechanical resonances or both acoustic/mechanical resonance? hope that makes sense.

2006-11-28 17:50:51 · 3 answers · asked by Anonymous

2006-11-28 16:38:28 · 8 answers · asked by Tysyn C 1

2006-11-28 16:26:45 · 4 answers · asked by curious_inquisitor 1

A wire of mass 10 grams and length 30 cm has both ends fixed and is vibrating at its fundamental frequency of 20 Hz.

What is the tension of the string?

What is the speed of the wave on this string?

2006-11-28 15:50:25 · 3 answers · asked by Anonymous

2006-11-28 15:30:19 · 6 answers · asked by James R 1

Has anybody seen a photo of Einstein before he came up with the crazy hair style.

2006-11-28 15:22:59 · 9 answers · asked by grese 1

An engineer wishes to design a curved exit ramp for a toll road in such a way that a car will not have to rely on friction to round the curve without skidding. He does so by banking the road in such a way that the necessary force causeinf the centripetal acceleration will be supplied by the component of the normal force toward the centere of the circular path. A) Show that for a given speed of v and a radius of r, the curve must be banked at the angle theta such that tan theta is v^2/ rg. B) Find the angle at which the curve should be banked if a typical car rounds it at a 50 m. radius and a speed of 13.4 m/s

2006-11-28 15:14:09 · 2 answers · asked by Kitana 2

As light passes through glass or water, do the high or low frequencies of light interact more in the process of abosorption and reemission and therfore lag behind.

2006-11-28 15:03:49 · 7 answers · asked by hayzman22 1

I am initiating a website to reach and communicate with any theoretical physicist in the world, albeit my communications will be in the English language. I would like to get an idea of the possible number in all? disciplines of physics I would like to communicate with.

2006-11-28 14:42:49 · 2 answers · asked by Anonymous

If i wanted to keep my coffee hot should i add the cream as soon as i get it or when i'm ready to drink it?

2006-11-28 14:39:33 · 8 answers · asked by kp000000 1

At a rock concert, a sound meter registers 130dB when it is placed 2.80m directly in front of a loudspeaker. Recall that the surface area of a sphere is given by 4 pi r^2. The power is given as 985 Watts. Determine how far from the loudspeaker the meter must be in order that it would read only 90dB.

My professor started out the problem with this:

B (letter betta) = 10 log Intensity + 120.

Is the 120 supposed to be a 130? How would you solve this? Is my professor wrong using a 120. Maybe a typo from him?

2006-11-28 14:38:56 · 1 answers · asked by Sir Guitarist 2

them seperate to the orignal colors again? I have tried oil with food coloring mixed with water and food coloring, this did not work. I have tried oil with oil paint mixed with water and food coloring, this did not work. Please let me know if anyone has a suggustion.

2006-11-28 14:38:11 · 7 answers · asked by TlC 1

If you were driving at the speed of light and turned on your headlights what would happen and why????/

2006-11-28 14:30:28 · 7 answers · asked by rahbonzy 2

OK. I have laundry detergent that comes in a clear bottle. when it is in the bottle it looks yellow. when i pour it into my hand it is purple. why?

2006-11-28 14:10:23 · 3 answers · asked by jlc2006 1

I have been assigned to watch the constellation Orion every two hours and track its motion. How is it moving? Is it the Earth's change of position?

2006-11-28 14:08:21 · 3 answers · asked by Gideon 3

At point A, 3.80m from a small source of sound that is emitting uniformly in all directions, the intensity level is 56.0 dB.
I JUST CAN'T SEEM TO GET THIS ONE RIGHT AND I DON'T KNOW WHAT I'M DOING WRONG. PLEASE HELP ME :) !!!!!!

2006-11-28 13:51:07 · 1 answers · asked by cheezo12 1

Doesnt science have a hard time trying to define gravity , how can then can gravity be schrinking into a small volume. Isnt that the inverse of the idea of the big bang singularity?

2006-11-28 13:45:47 · 5 answers · asked by goring 6

So when a star dies would it experience a great mass loss , therefore would have less gravity against what is alluded that a black hole possess? how can that happen?

2006-11-28 13:31:06 · 4 answers · asked by goring 6

If a ball flying forward in space at a constant speed due to momentary application of force collides with a stationary ball, is the kinetic energy of the moving ball's movement divided equally between the two balls? That's all I wanna know.

2006-11-28 13:22:56 · 6 answers · asked by zeromeyzl 2

Assume you have a building that is 150 meters high. If the density of air remains constant, what is the difference in atmospheric pressure between the ground floor and the ceiling of the building?

I'm not too sure how to go about doing this as my notes are limited and searching for an equation online has led me nowhere.
I was thinking Pair x g x h, but at the ground floor it would be 0 for the height.

Thanks!

2006-11-28 13:22:20 · 2 answers · asked by alonso_fan85 1

Wouldnt the Universe then be filled with a bunch of collapsed stars which would no longer be sheding light?

2006-11-28 13:18:51 · 4 answers · asked by goring 6

needed for a phys. presentation.

2006-11-28 13:12:48 · 3 answers · asked by satisfaction 2