Physics - December 2006

if the falling apple did not give him the beginning of the idea of gravity, What did. I keep reading the apple story is myth. When did the apple part of his history begin?

2006-12-03 06:04:25 · 2 answers · asked by swamp elf 5

2006-12-03 06:00:39 · 8 answers · asked by Anonymous

how exactly does it project the laser

2006-12-03 05:53:49 · 3 answers · asked by Anonymous

I am in the process of doing a project for a science fair exhabition and I'm interested in finding out as part of my project how I might be able the make a simple bar-magnet levitate through a series of magnetically charged coils (electromagnetic of course). Basically I'm trying to find out info about the circutes I might need and also the find out about the meterials I might need. I would be grateful if you could give me any info at all, even if you have info about URL's I might be able to go to on this subject. Thank for your help.

2006-12-03 05:40:10 · 2 answers · asked by Michael R 1

2006-12-03 05:33:48 · 6 answers · asked by Alissa S 1

2006-12-03 05:26:15 · 7 answers · asked by shan_997 2

As a projectile moves in its path, is there any point along the path where the velocity and acceleration vectors are parallel to each other?

I suck at this physics stuff.... I know the perpendicular to each other is THE HIGHEST POINT. But... I can't put two and two together. Hoping someone knows this stuff better than me. Would it be the lowest point or when it is the same? or?? lol

2006-12-03 05:25:58 · 5 answers · asked by ymcabookwormcat 3

so that the resulting stream of water approximates a sine curve

2006-12-03 05:19:11 · 1 answers · asked by justin c 1

what is the frequecy of the minute hand and the hour hand

2006-12-03 05:14:49 · 3 answers · asked by justin c 1

2006-12-03 05:14:16 · 9 answers · asked by Anonymous

Since Eye lens inverses the image of objects on retina , why I do not see people upside down?

2006-12-03 04:58:52 · 5 answers · asked by Patroka 1

If we can see the light of objects(galaxies) 15 bilion light year far,
light (photons) can travel that far.. but is there is any experimental
which proves the distance light can travel? 100 bil.ly?
if light decays,as it is possible at a certain point, we could be
missing whole universes which were too fare for light to reach us.
One of the ideas could be that matter too far could be the
"famous" dark matter. Thanks

2006-12-03 04:42:17 · 7 answers · asked by AntonioDellElce73 2

If you find the derivative of a position-time graph, you get a velocity time graph. If you integrate a velocity-time graph, you get a position-time graph. But what do you get if you integrate a position-time graph? I've heard many things including teleportation, time, and three dimensional motion. Thanks in advance.

2006-12-03 04:39:03 · 2 answers · asked by Calculus 1

question1:
A 40.5 kg girl and a 58.6 kg boy are on the surface of a frozen lake, 13.0 m apart. Using a rope, the girl exerts a horizontal 4.30 N force on the boy, pulling him toward her. Calculate the magnitude of the girl's acceleration.

question 2 :
The coefficent of static friction between the floor of a truck and a box resting on it is 0.36. The truck is traveling at 78.6 km/hr. What is the least distance in which the truck can stop and ensure that the box does not slide?

pls help meeeeeee

2006-12-03 04:35:42 · 1 answers · asked by TheKnight 1

2006-12-03 04:33:44 · 2 answers · asked by Isabel P 1

2006-12-03 04:11:47 · 7 answers · asked by nirgun2006 1

I have an aquarium in my car with a fish swimming in the aquarium. If I hit the breaks hard, does the fish move toward the front of the car, the back of the car, or not move at all?

Similar question, except this time I have a balloon filled with helium bouncing along the ceiling as I am driving. If I hit the breaks hard, does the balloon move toward the front of the car, the back of the car, or not move at all?

2006-12-03 04:02:57 · 3 answers · asked by Anonymous

An 19.8 g rifle bullet traveling 249 m/s buries itself in a 3.50 kg pendulum hanging on a 2.78 m long string, which makes the pendulum swing upward in an arc. Determine the horizontal component of the pendulum's displacement.

What formula do you use on this type of problem and how do you set it up?

2006-12-03 03:47:28 · 2 answers · asked by john c 1

2006-12-03 03:00:19 · 8 answers · asked by david c 1

its chemistry

2006-12-03 02:51:02 · 7 answers · asked by Elsa R 1

I know that pressure is Force/Area but I have an investigation and am unsure what I should take to be my area.

Here is my method:

The equipment was set up corresponding to measurements already decided (e.g. how far away the hairdryer is away from the scales); one wooden boards was stuck on to the top of the weighing scales and the scales were reset to zero while another identical woodem board was – with clamps supporting it either side as to stop it dipping – parallel to the first but x cm above.
Air was then blown through the boards by an air source which is x cm’s away from them which produced a reading that I was able to turn in to Newton's.

However should I take the (imaginary) rectangle between the two boards as the measurements for area; or from the air source to the far side of the boards or something else?

I hope that this has made sense! Thanks again! -x-

2006-12-03 02:29:56 · 7 answers · asked by Anonymous

2006-12-03 02:12:25 · 3 answers · asked by darwin 1

2006-12-03 02:12:22 · 6 answers · asked by Anonymous

Can anybody give me a source, or help me through this topic? I want to know about evaluating potential of points in a field, by dividing it into square meshes, and using this fact that the electrical potential of a point at the corner of one of squares is equal to one fourth of the sum of potentials of points up, down, right, and left of it.

2006-12-03 02:07:11 · 1 answers · asked by IQmand . 2

2006-12-03 02:01:29 · 4 answers · asked by Bumbo 3

.. of course it seems to be a known fact that the speed of light c~299.000 m/sec is the ultimate speed limit of things.

Now regarding the outcome of experiments like the double-slit experiment which was like:
'obviously the photon knows which slit is open, and where the detector is'.. i would like to ask wether it's a little different.
Lets assume something CAN travel >c lets disregard and leave open WHERE and HOW .. but ...
Wouldn't be something travelling at >c would make us believe we observe something traveling at a finite speed in the opposite direction ?
Possibly making us believe it acts like knowing the setup, cause it already passed through in the opposite direction for example ?

2006-12-03 01:04:32 · 3 answers · asked by blondnirvana 5

Eg with temperature, pressure or state ie maybe it's more if H is in liquid form or something?

2006-12-03 00:37:41 · 3 answers · asked by lykastar 3

2006-12-03 00:02:30 · 2 answers · asked by shailja.varma 1

2006-12-02 23:26:24 · 9 answers · asked by Cyber 6

...you have a glass full of ice. The outside of the glass then becomes full of condensation and creates a large pool of water around the glass. Is that in effect the water that was in the glass in ice form? How does the water get from the Ice to a pool of water outside the glass?

PS...This may be on abvious question...but I can't remember the answer.

2006-12-02 23:18:55 · 3 answers · asked by I'm Superior In Every Way 2