Physics - August 2006

As things move is there an energy loss, could the future of the Universe transfer all its energy and become just one big lump of mass? M=E/c^2

2006-08-22 03:47:39 · 9 answers · asked by goring 6

2006-08-22 03:47:15 · 19 answers · asked by ManiaXe 1

2006-08-22 03:46:01 · 7 answers · asked by spaga 1

2006-08-22 03:40:11 · 13 answers · asked by steve s 1

2006-08-22 03:39:41 · 7 answers · asked by Anonymous

A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg,
along a horizontal track. If the engine exerts a force of 40000 N
and the track offers a friction force of 5000 N, then calculate the force of wagon 1 on wagon 2.

2006-08-22 03:09:47 · 13 answers · asked by Vidhan A 1

just the basics nothing to indepth.

2006-08-22 03:08:48 · 5 answers · asked by ah64dtk 4

I can't find a decent explanation in my tiny little mind

2006-08-22 02:51:36 · 5 answers · asked by Steve R 2

According to the third law of motion when we push on an object,
the object pushes back on us with an equal and opposite force.
If the object is a massive truck parked along the roadside, it
will probably not move. A student justifies this by answering
that the two opposite and equal forces cancel each other.
Comment on this logic and explain why the truck does not
move.

2006-08-22 02:50:50 · 25 answers · asked by Vidhan A 1

2006-08-22 02:41:59 · 31 answers · asked by ideaseeker 1

1. Construct a physical explanation for why the sound of thunder from a lightning strike appears after the actual bolt is seen.
2. Execute a strategy that would allow you to determine the distance to a lightning strike, given a five-second time difference between seeing the lightning and hearing the thunder.

2006-08-22 02:04:45 · 4 answers · asked by Matthew B 2

Name a time that the universe had no matter in it. you should refuse to use that dirty BB word. A true vacuum void is impossible the container would never be strong enough to stop matter entering into the void, then how do you have right next to this impossible void all the matter in the universe coldly crammed into the size of a pea or a tardis, (Dr who fans need not reply)

"By now you should be seeing that the two cannot exist along side each other"

a pea under the extreme pressure of containing all the mass of the universe and a impossible vacuum, it is impossible because the observer contaminates the observed and it would take more than the all the energy in the universe to create and maintain.
This is all happening before energy exists? This does not take into account the energy needed to cram all the mass of the universe into our pea size tardis, where did all this energy come from before energy existed. i wish someone would pull the STRING on the BB theory.

2006-08-22 01:16:11 · 10 answers · asked by treb67 2

2006-08-22 01:16:07 · 5 answers · asked by tom science 4

2006-08-22 00:38:27 · 19 answers · asked by pinku g 1

2006-08-22 00:37:48 · 5 answers · asked by pinku g 1

Residue in reaction equations are really energy dissipation rather than Neutrinos which was postulated to explain mass loss?

2006-08-22 00:02:07 · 2 answers · asked by goring 6

Volume and density required for something to exist?

2006-08-21 23:31:25 · 3 answers · asked by goring 6

whether anyone can fly or any reserch is going on

2006-08-21 23:27:32 · 11 answers · asked by Anonymous

now dont say simply fission.what is the real process.what are the changes in the nucles(with intermediate steps)?what is the change in strong and electromagnetic forces?i also do not understand that a neutron adds to the strong force, then how come it splits apart(nucleus)? and how mass is converted into energy? dont give me the einstein relation! give me the process. u can give the answer in the context of particle physics also.

2006-08-21 23:15:39 · 2 answers · asked by outofthisworld 2

2006-08-21 22:53:20 · 11 answers · asked by Winston T 1

There was no atoms at the time of the Big Bang?

2006-08-21 22:52:08 · 6 answers · asked by goring 6

2006-08-21 22:48:14 · 1 answers · asked by goring 6

They get dragged towards the train if they do so.

2006-08-21 22:24:30 · 13 answers · asked by Alpha 1

2006-08-21 21:58:50 · 3 answers · asked by goring 6

in what way is it used to make alarms?

2006-08-21 21:56:15 · 2 answers · asked by Jigsaw 1

We know that the gravitational energy of earth apparoches Zero at a ht equal to half of it's radius.But moon of too far from earth(more than half of it's radius). Then hjow is Moon is attracted towards Earth?

2006-08-21 21:41:42 · 10 answers · asked by webmas2004 1

2006-08-21 21:38:44 · 5 answers · asked by miledi111 1

Morning all, are our brains ready to show off

Pythagoras-eum is a new, but as yet unstable Radioactive Source. It is superdense, with a half life of 48 hours. The fatal dose is 20,000Bq.

One day, the college student on work placement decides to injest a sample of this element, which is exactly half of the fatal dose.
Sickness effects occur soon after, meaning he has to leave to Hospital.

Since the Hospital will not release him till he has less than 2% of the original dose, How long will he be in Hospital for?

Remember to show you working, and I shall reveal all later tonight. A nice easy teaser.

Please note that Pythagoras-eum is a fictional element created for the purpose of this question. As always, this question is aimed for our Science geniuses to keep those neurons at top use, compared to some of the annoying questions appearing everyday.

As of a poorly worded question on Monday regarding Forces and Energy, tomorrow AM will have a double show off chance.

2006-08-21 21:15:31 · 9 answers · asked by Anonymous

2006-08-21 21:09:55 · 7 answers · asked by TK 1

have you ever wondered about this phenomenon?

2006-08-21 21:00:58 · 19 answers · asked by Anonymous