Physics - September 2006

2006-09-02 14:23:17 · 3 answers · asked by tulipshrine 2

2006-09-02 14:21:11 · 15 answers · asked by Backtash123 1

Ok, so we know that when light travels through different mediums from a vacuum it will slow down. But at what rate does it slow down. Also if it goes from a medium to a vacuum will it speed back up?

2006-09-02 14:18:36 · 4 answers · asked by Adam 4

Ok, here's the question...

"A child can throw a baseball at 20mph. Some pro ball players can throw a baseball at 100mph, which is five times as fast. How much more energy does the pro ball player give to the faster ball?"

Since the ball is in motion, should I use the equation for Kinetic Energy (which is KE =1/2mass x speed^2)

2006-09-02 14:04:03 · 7 answers · asked by Anonymous

And what happens in layman terms when you split it?

2006-09-02 14:04:00 · 12 answers · asked by Anonymous

If a mirror reverses an image horizontally from left to right, why don't it flip that same image vertically up and down?

2006-09-02 13:59:37 · 4 answers · asked by Anonymous

2006-09-02 13:07:54 · 31 answers · asked by lolo 1

Ok, well I'm gonna ask this question. If I had to guess, I would say the momentum is the same. But I'm not really sure. Can anyone help?.....

"A high-speed bus and an innocent bug have a head-on collision. The sudden change of momentum for the bug spatters it all over the windshield. Is the change in momentum of the bus greater, less, or the same as the change in momentum of the unfortunate bug?"

2006-09-02 12:49:58 · 19 answers · asked by Anonymous

You place two electrodes at corners in the knight position; one across and two along. What resistance do you measure between them and how do you get the result? This question was asked of job applicants by Google in an aptitude test.

2006-09-02 12:38:05 · 5 answers · asked by zee_prime 6

... 1, only

... -1 and +1

... 4 only

... -4 and +4

... 1/4

... 1/2

or none of these

2006-09-02 12:11:58 · 3 answers · asked by Olivia 4

If e^6x = 8
then x =

2006-09-02 11:58:27 · 6 answers · asked by Olivia 4

Explain how that the first person figured out how to use square roots to find the hipotenuse of a Triangle? Man I hope that the spelling is right?

2006-09-02 11:10:35 · 7 answers · asked by Anonymous

2006-09-02 11:09:13 · 9 answers · asked by BARD 4

DEALING WITH A RATE ON HOW MUCH BRAIN POWER IS BEING USED

2006-09-02 10:33:34 · 20 answers · asked by Anonymous

2006-09-02 10:29:07 · 7 answers · asked by RYAN A 1

i've been working on a zero friction bearing for 10 years now and all but the math has been worked out including a prototype but i lack the education to effectivly descride what the bearing is doing mathmatically and have recently discovered that it miht be possable to generate electricity through a series of pullys and rotation speed of other magnetic fields .(can a magnetic field generate purpetual motion through rotation and alternating maneticfields?

2006-09-02 09:55:49 · 4 answers · asked by matthew_yelle 2

Hi! I have a question that I need help on. I have been trying to figure it out for hours. A 87.0 m long train begins uniform acceleration from rest. The front of the train has a speed of 19.9 m/s when it passes a ralilway worker who is standing 180 m from where the front of the train started. What will be the speed of the last car as it passes the worker?

2006-09-02 09:47:12 · 4 answers · asked by beautyqueenjustine 3

It seems outworldly yet enticing enough, I feel.

2006-09-02 09:36:04 · 5 answers · asked by Manny 5

2006-09-02 08:43:34 · 2 answers · asked by crazyfrog 2

When a high-speed passenger train traveling at 161 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D= 676 m ahead. The locomotive is moving at 29.0 km/h. The engineer of the high-speed train immediately applies the brakes. What must be the magnitude of the resulting deceleration if a collision is to be just avoided?

2006-09-02 08:32:22 · 7 answers · asked by afchica101 1

A world's land speed record was set by Colonel John P. Stapp when in March 1954 he rode a rocket-propelled sled that moved along a track at 1020 km/h. He and the sled were brought to a stop in 1.4 seconds. In terms of g, what acceleration did he experience while stopping?

2006-09-02 08:21:20 · 6 answers · asked by afchica101 1

A bead with charge q1 = 2.07 μC is fixed in place at the end of a wire which makes an angle of θ = 33.4° with respect to the horizontal. A second bead with mass m2 = 3.59 g and charge 4.30 μC slides without friction on the wire. What is the distance d where the force of the Earth's gravity on m2 is balanced by the electric force between the two beads? Neglect the gravitational interaction between the two beads.

I've set it up like this: m2 * 9.8 = (k * q1 * q2)/d^2) * sin(theta), but still it is incorrect. Any suggestions.

2006-09-02 08:13:42 · 3 answers · asked by eltel2910 1

In relativistic physics, radio signals and light bend due to interactions with plasma (for example, when they cross the vicinity of the Sun). But how can anyone guarantee that two atomic clocks, placed in distant locations, used for measuring time delays caused by geometrical differences between the extremities of bent trayectories, are synchronized with each other accurately enough?

2006-09-02 08:12:08 · 5 answers · asked by Anonymous

when light ray passes thru glass it is slowed and it bends . but wfen it re emerges out why does speed up to 3 x 10^8. where is it trigerred 2 such a speed . what pushes it

2006-09-02 08:10:08 · 6 answers · asked by Anonymous

2006-09-02 08:03:25 · 5 answers · asked by Luis L 2

The question is
The electric field midway between two equal but opposite point charges is 845 N/C, and the distance betwee the charges is 16.0cm. What is the magnitude of the charge on each?

Any help is appreciated. What I have so far is this equation but I do not know what or how to get Q1 or Q2

The numbers are just subs to identify the separate points.
E= (k)(Q1/r21)(1+ [(Q2/Q1)/(r22/r21)

2006-09-02 07:53:26 · 3 answers · asked by Anonymous

for example,what makes water molecules wet,rock molecules hard,human molecules albe able to form a living thing,and all molecules in general have mass?Is their some sort of subatomic particle that determines these things?

2006-09-02 07:23:00 · 8 answers · asked by That one guy 6

Like why is it a magnet in the first place and whats the deak with the North pole and South pole. ty

2006-09-02 06:59:42 · 18 answers · asked by kate irl 1

2006-09-02 06:27:09 · 23 answers · asked by Guy H 1

Capable of exceeding speed of sound: produced by, capable of reaching, or relating to a speed that is faster than the speed at which sound travels through the air.

2006-09-02 05:57:58 · 11 answers · asked by jheffsky 2