Physics - September 2006

2006-09-23 14:05:36 · 7 answers · asked by Anonymous

If Bob lived on planet earth and suddenly this universe was split into 1000 universes, each exactly identical at the first moment, then when we observe (supposing we can) all 1000 Bobs how similar will they all act? Will they act identical? Somewhat identical? Not at all identical? The main idea is, if there are some events that are truly random (which seems to be very true so far), then how much of an effect will it have on our Bobs. The main idea is are the parameters of possibilities on the macro scale so strict that we could not observe a difference, or are they loose enough eventually discourse after discourse will lead to our Bobs living quite different lives (IE: Eating ice cream instead of donuts 27 years after the universes split while watching TV).

2006-09-23 13:51:08 · 5 answers · asked by Someone 2

2006-09-23 13:01:51 · 11 answers · asked by Anonymous

2006-09-23 12:50:58 · 2 answers · asked by Anonymous

do medicine or other sheet? all that neutrino-pie-in-the-sky stuff is a waste of time...

2006-09-23 12:50:08 · 7 answers · asked by andyheretic 2

2006-09-23 12:46:08 · 23 answers · asked by o.tola 1

Doesnt light have to follow the field of gravity because its a mass and mass interact with each other?

2006-09-23 12:45:31 · 2 answers · asked by goring 6

Such as distance, time, temperature, speed, or mass.

2006-09-23 12:35:49 · 1 answers · asked by Anonymous

2006-09-23 12:35:32 · 3 answers · asked by goring 6

An electron of mass 9.11×10−31 kg leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, which is a distance 1.55 cm away. It reaches the grid with a speed of 3.90×106 m/s. The accelerating force is constant. Find the acceleration, the time to reach the grid, find the net force. (You can ignore the gravitational force on the electron).

2006-09-23 12:30:15 · 1 answers · asked by fender_tri 1

2006-09-23 11:27:31 · 4 answers · asked by Sarah M 2

If I dropped a bullet and shot one from a gun that is held perfectly horizontal, will these bullets reach the ground at the same time? In other words: Will the horizontal force acting on the bullet fired make a difference on the time it takes to reach the ground?

2006-09-23 11:26:27 · 19 answers · asked by jandtoit 2

2006-09-23 11:09:37 · 5 answers · asked by tjcsonofallnations 3

A ball is shot from the ground into the air. At a height of 9.1m, its velocity is (7.6i+6.1j)m/s. (i horizontal and j upward)
a) to what max. height does the ball rise?
b) what horizontal distance does the ball travel
(X-Xo=(Vo.COSangle)t right?)
c) what are the magitude and d) angle (below the horizontal) of the ball's velocity just before it hits the ground?


I did figure some parts out; since i is horiz. and j is upward the ball is still climbing. The magnitude of v is sq root of (7.6^2)+(6.1^2)=9.75 m/s and the angle at that moment is arctan(6.1/7.6) = 38.75degr.

I thought by calculating the horizontal range R I would get somewhere but I'm stuck again.
I think with the instantaneous velocity after 9.1m I must be able to calculate the t and the Vo and go from there but how?
Who can help me?

2006-09-23 10:56:35 · 4 answers · asked by dutchess 2

2006-09-23 10:51:07 · 10 answers · asked by @@@Marty@@@ 1

... wiring, the battery and a mirriad of other bibs and bobs within the phones internals (all developed by different people) had to be in place before Mr. Bell could even consider designing and producing the first and (most importantly) the second one.

So to re-itterate; invention or innovation??

2006-09-23 10:29:44 · 5 answers · asked by ? 2

A block starts from rest at a height of 5 m on a fixed inclined plane. The acceleration of gravity is 9.8. What is the speed of the block at the bottom of the ramp? Answer in units of m/s.
Data:
The angle of inclination of the plane is 25 degrees and the coefficient of sliding friction between the plane and the block is 0.1. The mass of the block is 4.8 kg.

Please give me the process.

2006-09-23 10:18:53 · 2 answers · asked by askance 4

2006-09-23 10:05:43 · 7 answers · asked by coogee13 1

2006-09-23 09:55:07 · 14 answers · asked by tjcsonofallnations 3

Heres are the problems:

1. --If one object has a greater speed than a second object, does the first necessarily have a greater acceleration? Explain, using examples.

2.--Can the velocity of an object be negative when its acceleration is positive? What about visa versa?

3.--A car slows down from 20m/s to rest in a distance of 85m. What was its acceleration, assumed constant?

4.--at highway speeds, a particular automobile is capable of an acceleration of about 1.6m/s. At this rate, how long does it take to accelerate from 80km/h to 110km/h?

Id greatly appreciate it if you can answer any of these problems.

2006-09-23 09:46:43 · 4 answers · asked by Anonymous

Why do we feel dizzy if we try to fight off our sleep?

2006-09-23 09:41:13 · 7 answers · asked by nehulya 1

2006-09-23 09:30:18 · 6 answers · asked by nehulya 1

for example, i have a velocity of 2.6 meters/seconds, how can i find its acceleration?

2006-09-23 09:15:16 · 8 answers · asked by fender_tri 1

is it something like the reaction time, or the strength with which the player should hit the ball?

2006-09-23 09:15:10 · 8 answers · asked by no-one listens... 2

Why petrol is the only victim of the Global worming concerns?
I think that to take a narrow look on that problem is dangerous.
Therefore my question:
Is the electricity pumping causing Ionization of the oxygen and the ozone by the taking electrons from them and holding them in the electric webs.
If I am right than increasing of Electricity ”production” as a substitution for the carbon energy sources will give us much bigger problems then we can imagine.
If some one knows the physics and have time to answer Please let me know.
Am I right??

2006-09-23 09:05:12 · 5 answers · asked by Rodion G 1

2006-09-23 08:42:18 · 29 answers · asked by Anonymous

I have to make a rubber band powered car for science. I have no idea whatsoever! I don't even see how a car can be powered by a rubber band! Can you tell me how to make one and how it works?!
Thank you.

2006-09-23 08:35:21 · 7 answers · asked by dancing queen 2

2006-09-23 08:33:49 · 14 answers · asked by Anonymous

I believe ps should be converted to seconds and fm should be converted to meters. Can u pls show ur working so i can understand how u got the answer.

2006-09-23 08:28:13 · 3 answers · asked by 3ajeeba_q8 2

Today, it is thought that a black hole's gravity is too strong for light to escape, but at the same time x-ray radiation does escape from black holes. Given that light is one weaker form of radiation, that seems to be a contradiction of our knowledge of gravity.

Do we need to a adjust our understanding to be that black holes do not produce any light because the high gravity beyond the event horizon has changed the electron vs the nucleous ratio. Light is no longer be produced. It is not that gravity is able to hold it.

X-ray radition is produced from the tremendous energies within the black hole's destruction of each atom's neucleous. That is Einstein. The electrons from these atom's have already been stripped from the atom. The electron's that produce light were stripped at the event horizon. Therefore, no more light production within the black hole.

2006-09-23 08:26:20 · 3 answers · asked by bird_brain_88 3