Physics - June 2006

A 5.20 gram bullet moving horizontally at 672 m/s strikes a 700 gram block of wood at rest on a smooth frictionless table. The bullet emerges from the block, traveling in the same direction at 428 m/s. What is the speed of the block after the bullet emerges? How much kinetic energy is converted to other forms of energy during this process?

thanks

2006-06-27 20:21:44 · 5 answers · asked by Sagely 4

2006-06-27 20:18:04 · 6 answers · asked by Anonymous

Light leaving earth today would reach it after 4.6 years. If I were to reach that star faster than light; for example right now then would I be able to see myself 4.6 years younger?????? And how about i reach a star of my age right now? would i get to see my own birth???

2006-06-27 20:05:00 · 9 answers · asked by Justin L 1

2006-06-27 19:55:54 · 6 answers · asked by Anonymous

2006-06-27 19:11:05 · 3 answers · asked by kp.eric 2

If I want to determine the motion of an object that weighs 1kg, what is the number to use as its mass? If that object is one liter of water, isn't its mass also 1 kg? If someone tells me that an object weighs W kilograms and I want to know its acceleration if I apply 1 Newton, what mass value do I use: W kg? W/g ?

2006-06-27 19:07:17 · 6 answers · asked by gp4rts 7

2006-06-27 18:45:19 · 6 answers · asked by kimex 2

2006-06-27 18:15:08 · 8 answers · asked by Jon R 1

2006-06-27 18:12:48 · 20 answers · asked by Anonymous

No watch is at the same time of another watch .

2006-06-27 17:54:38 · 4 answers · asked by Anonymous

2006-06-27 17:48:24 · 7 answers · asked by Anonymous

These are large underground oval shaped tunnels that contain micro particals which are proppelled at super high speeds.

2006-06-27 17:44:39 · 5 answers · asked by Mike P 1

2006-06-27 17:39:05 · 4 answers · asked by I like horses 1

I've read that the W and Z "messenger" particles that govern the strong nuclear force are many, many times heavier than a single proton. If this is so, why don't we observe this weight? Where is that much mass coming from, and where is it going? Why does a messenger particle have mass at all? Most of all I can't understand how we're not seeing this mass show up in standard observations. I mean really... what's up with that?

2006-06-27 17:37:35 · 5 answers · asked by Argon 3

2006-06-27 17:28:47 · 2 answers · asked by Anonymous

2006-06-27 17:20:46 · 11 answers · asked by Anonymous

2006-06-27 16:40:29 · 24 answers · asked by Anonymous

2006-06-27 16:33:26 · 17 answers · asked by Kris 2

If you are in a hot air baloon and you shoot a gun and drop a bullet at the same time which will hit the ground first?

2006-06-27 16:30:31 · 4 answers · asked by bonniesaint 1

say there is a metal tube,when you put a lid on the cylinder why does it get dark why isn't the light still bouncing around in the tube?

2006-06-27 16:10:26 · 3 answers · asked by hkyboy96 5

2006-06-27 15:24:47 · 16 answers · asked by acsmooth2619 1

Are there central bodies that collect/publish/help people find relevant research? Are there any websites on this subject? Any help gratefully recieved.

2006-06-27 14:13:27 · 8 answers · asked by Anonymous

An object in motion tends to stay in motion, blah blah blah.
The surface of the Earth is traveling at about 600mph and therefore so are we. If the Earth stopped instantaneously, would the tectonic plates and everything else on the surface go flying east?

2006-06-27 14:05:14 · 16 answers · asked by smutulator 1

2006-06-27 13:57:08 · 11 answers · asked by stanselin 1

In theory, if gravity waves have a frenquency , can they be canceled by vibrations at a sine wave opposite that of gravity.

2006-06-27 13:53:56 · 3 answers · asked by stinkingdog101 2

Like if there was a building there or something

2006-06-27 13:37:10 · 9 answers · asked by veganxinxfurs 2

theoreticly couldnt you put a generator that we use everday in power plants in space and just spin it as fast as humanly possible and then it would just spin forever? i mean if space is a vacum then there is no friction, or gravity slowing it down.

2006-06-27 13:07:01 · 8 answers · asked by Anonymous

2006-06-27 12:43:41 · 5 answers · asked by vladinaydenov 1

if nuclear fusion is sustained wouldnt that mean that a sorta of mini-sun kinda thing would be produced? and if so wouldnt this mean that this little sun would behave much the way our real sun behaves. what im thinking is that if we sustained fusion then we would create a kind of sun and if this is a sun then wouldnt it produce radiation making it just as dangerous as nuclear power plants assuming we used this as a power source.

2006-06-27 12:27:08 · 4 answers · asked by Anonymous

like what sort of actions and reactions would need to take place for somthing like this to work.

2006-06-27 12:05:06 · 7 answers · asked by Anonymous