Physics - July 2006

2006-07-31 12:39:14 · 11 answers · asked by gu2163 1

This question gets asked a few times a day, every day. I appreciate that people are curious about light and relativity and want to understand it, but would it hurt to look at what has already been said on this topic before being the 100th person in the last month to ask about it?

2006-07-31 11:53:36 · 7 answers · asked by genericman1998 5

2006-07-31 11:35:27 · 4 answers · asked by eric j 2

2006-07-31 11:32:09 · 4 answers · asked by Anonymous

Say two cars are going opposite directions at ten miles an hour. They are moving apart at twenty miles an hour. So could the same be said of the first photon emitted by each laser? Or are they only moving away from each other at the speed of light?

2006-07-31 11:18:00 · 8 answers · asked by drgns77 2

A 0.420 kg hockey puck, moving east with a speed of 4.60 m/s, has a head-on collision with a 0.850 kg puck initially at rest. Assume a perfectly elastic collision.
(a) What will be the magnitude of the speed of each object after the collision?
0.420 kg puck?
0.850 kg puck?

2006-07-31 11:13:40 · 5 answers · asked by Xpyoz 2

A softball of mass 0.220 kg that is moving with a speed of 7.0 m/s collides head-on and elastically with another ball initially at rest. Afterward it is found that the incoming ball has bounced backward with a speed of 4.6 m/s. (Assume the positive direction is forward.)
(a) Calculate the velocity of the target ball after the collision (m/s)
(b) Calculate the mass of the target ball (kg)

2006-07-31 11:06:17 · 2 answers · asked by Anonymous

2006-07-31 10:31:46 · 6 answers · asked by Anonymous

2006-07-31 09:49:59 · 5 answers · asked by jasonfletcher 1

The n-dimension theory by Kaluza-Klein, who tried to unify gravity and the other forces, can be proved experimentaly in a lab? Can the folded dimensions be "seen" or felt by any experiment? The Calabi-Yau "simulators" can really express the folded dimensions, or is it just another "speculation"? Do we have enough energy in our labs to "see" this dimension-particles-forces?

2006-07-31 08:59:01 · 5 answers · asked by silvafilho 1

How does it differ from others, such as electromagnetic and gravitational fields?

2006-07-31 08:57:22 · 2 answers · asked by bpiguy 7

i've seen it on sci-fi films all the time eg: event horizon, they create a singularity in order to fold space and travel to the other side of the universe. is it actually theoretically possible to do this, or likely that we will ever be able to? or would it swallow everything around it up like a black hole? and if so could it be used for far flung space travel and/or time travel?

2006-07-31 08:10:33 · 11 answers · asked by LOLLY 1

2006-07-31 08:04:17 · 10 answers · asked by Henry 5

2006-07-31 07:42:17 · 3 answers · asked by goring 6

But if the same carriage going at the same speed had no ceiling or roof and you jumped, you would land behind the spot you jumped from?

2006-07-31 07:28:33 · 16 answers · asked by fletcheyc 2

i know that when looking out into deep space a telescope is looking into the past, if there was a telescope powerful enough would scientisits be able to see the moments directly after the big bang, before stars and galaxies formed properly?

2006-07-31 07:28:01 · 14 answers · asked by LOLLY 1

2006-07-31 07:22:54 · 14 answers · asked by krash 2

Basically my question is asking if you lose mass as you lose weight. I beleive it is true. My 8th grade science teacher told us that if he weighed 200 lbs and lost 10 lbs he would have the same mass. Which i beleive is false. He refused to beleive he was wrong. I would just like to see what every one else thinks...please anwser this!!!!!

2006-07-31 07:19:38 · 10 answers · asked by Jane G 1

well if u say the energy thing ,then why does it bend in a gravitational field. if it responds to a gravitational field then it too must have a field of its own and can attract things. i know it doesnt. but how come its not the other way round. can anybody tell me where the flaw is?

2006-07-31 07:11:20 · 50 answers · asked by outofthisworld 2

2006-07-31 07:08:59 · 4 answers · asked by Ahsan Shahid 1

I know they will fall if they pop, but what are the other causes? Would a change of barometric pressure, such as a passing thunderstorm, cause this?

2006-07-31 06:43:55 · 10 answers · asked by Josie 5

I heard of this place called the "Valley of Silence" located in central Mexico, in the state of Durango. Numerous reports affirm that on this hill if you leave an automovile in neutral, the vehicle will travel slowly uphill as if defiing the laws of motion. I would like a rasonable explanation for this phenomenon.

2006-07-31 06:28:20 · 3 answers · asked by Dr. Chapatin 2

2006-07-31 06:21:33 · 17 answers · asked by oneindia 1

where the universe will end? is our universe a part of a other universe?

2006-07-31 06:19:27 · 6 answers · asked by oneindia 1

Although I know that tides are due to moon attraction, I don't understand why it can only have an influence on the oceans and seas. What makes sea and ocean water react differently from rivers and lacs when it comes to moon attraction?

thank you for your answers.

2006-07-31 06:12:59 · 13 answers · asked by qw e 1

i want to know if there are any methods or experiments or apparatus(s) with which electricity can be produced with the help of:

(I) Wind
(II) Water

if there are any please tell me coz im in urgent need for such experiment. Its an emergency & 1 more thing try 2 be more precise & apt about ur answer coz some ppl really confuse me when it comes 2 science.

2006-07-31 05:05:54 · 2 answers · asked by Alishan A 1

2006-07-31 04:45:43 · 35 answers · asked by Yusuf 2

2006-07-31 04:34:37 · 7 answers · asked by kathy6500 3

according to gravitational law, F=G(M.m)/d^2. right. now if distance becomes zero then does the force becomes infinite?

2006-07-31 04:33:49 · 8 answers · asked by outofthisworld 2

2006-07-31 03:49:38 · 5 answers · asked by switchntwist 1