Physics - May 2007

Einstein said so...but why..just why...
if we manage to stuff enough energy into a spacecraft,(it's next to impossible, but it just might;MIGHT be possible)we would be able to go at the speed of light...

2007-05-12 00:26:14 · 23 answers · asked by phoenixankit 1

2007-05-12 00:24:27 · 3 answers · asked by arun 1

2007-05-11 23:58:13 · 9 answers · asked by Grinning Football plinny younger 7

where can i find model car powered by photovoltaic cell,riding on slotted track. This is driven by motorized light source aimed thru joystick

2007-05-11 23:35:37 · 1 answers · asked by romy c 1

2007-05-11 20:45:37 · 15 answers · asked by Anonymous

2007-05-11 20:40:42 · 19 answers · asked by Anonymous

was taking very important high school test, but ther wasn't enough room in class or any where else for that matter, so me and a couple of students were sent to a old cafeterria which is rarely used. So sure enough we start working on are test, and then i decided to put my head down for a couple of minutes. When i raised my head up i saw students dressed in 80's style clothes and were getting their lunch. i was ******* afraid i thought that i had travel back it time, because the cafeteria i was taking the test on was, the one for the students of many years ago through 80's before it closed it the late 80's and i thought i was seeing the students of the past getting their lunch. Then i ask one of them, "what year is it" he responded by saying, "stupid dude its 1987". Then i saw them growing old and in a matter of seconds they went form teens to grownups in their 30's and as they were growing old thecafeteria was too untill it reached the condition it is in now(2007) I WAS NOT ON DRUGS

2007-05-11 19:45:51 · 12 answers · asked by Anonymous

2007-05-11 18:28:24 · 1 answers · asked by Anonymous

What makes up the light?

WHat is E=Mc2?

What are energies types?

2007-05-11 17:11:37 · 6 answers · asked by Anonymous

something in the outer space, a creature of sort, so lonely so lonely.

2007-05-11 16:44:41 · 8 answers · asked by lucifer a 2

Scientifically speaking, with the least friction.

2007-05-11 16:26:25 · 14 answers · asked by Anonymous

2007-05-11 15:53:57 · 3 answers · asked by Anonymous

In the Star trek movie first contact the bog went back in time to prevent the first warp flight. They were distroyed by the enterprise crew. On an episode of voyager 7of 9 makes a comment about how the borg were present during that first warp flight. If the borg new they failed why wouldn't they just try again.?

2007-05-11 15:42:18 · 4 answers · asked by Brian D 5

Can someone tell me the conductivity of dry un-ionized air. I have assumed it to be zero, but I realize I probably am wrong.

How does one express the conductivity of fluid? ohms per what? do you have a good link on this subject?

2007-05-11 15:41:35 · 2 answers · asked by Richard K 3

Supposedly, from common pressurized air passed through the tube, cold air will be emitted from one end and hot air from the other.

2007-05-11 15:07:20 · 1 answers · asked by john-evan 1

A tank filled with water to a depth of h has a small round hole at the bottom of area A. The density of water is p, and acceleration of gravity is g. A small plate is placed over the hole. The force required to keep back the water is:

F = Apgh

If the water is allowed to flow out of the hole, then its velocity, per Bernoulli, is √(2gh). Then the mass flow is Ap√(2gh), and the thrust force is

F' = 2Apgh

which is twice the force required to keep the plate in place. Experiment easily shows this to be wrong. Where's the mistake?

2007-05-11 14:46:45 · 3 answers · asked by Scythian1950 7

2007-05-11 14:19:04 · 2 answers · asked by Annamie 1

Would the picture ever stabilize? Would you see multiple pictures at the same time? Would it affect which frequency you had to tune into to see which channel?

2007-05-11 14:17:31 · 6 answers · asked by Jeremy 2

as it moves away from you. How de we know when a star in the galaxy is moving towards us? what color will it appear to be? what do these examples have in common?

2007-05-11 12:51:42 · 7 answers · asked by santista 2

2007-05-11 10:07:10 · 6 answers · asked by Anonymous

2007-05-11 10:05:12 · 8 answers · asked by Alexander 6

A container divided by porous membrane, contains
uranium hexaftoride gas UF6 in the left half and vacuum
in the right half.

The gas slowly diffusing through the membrane is extracted,
and stored for future enrichment.

How many stages of enrichment are needed, if natural
concentration of U235 is α=0.7%, and desired final
concentration is ω=90% ?

2007-05-11 09:47:28 · 2 answers · asked by Alexander 6

2007-05-11 08:51:22 · 7 answers · asked by elmexicano 2

Assume an opened top container with an inlet pipe midway. 190 degree F steam is coming in the inlet at the rate of 4170 lbs/hour (5100 cfm). how many btu's of ouside energy required to raise inside of container to 2000 degrees F.? Please show formulas to figure.

2007-05-11 08:04:40 · 1 answers · asked by 3rrotec 1

2007-05-11 07:44:55 · 32 answers · asked by fed-up 2

if you stack 4:4 timing like in music can the individual disks have a levitating effect on the four as a hole

2007-05-11 07:29:54 · 1 answers · asked by autheus 1

There must be billions of wheels and millions of compressors and millions of other inflatables that compress air. Would that have any affect on atsmospheric pressure?Just think that you're in a sealed room(GLOBE) and the air sucked into a vacuum, What woud happen???

2007-05-11 06:40:52 · 4 answers · asked by markusonalikus 1

a] energy is what you feel when you wake up in the morning
b] energy is something that has power
c] energy is tha capacity to do some type of work
d] the sun creates energy

2007-05-11 06:01:44 · 11 answers · asked by Anonymous

Find the pressure exerted in psi.

2007-05-11 05:30:17 · 3 answers · asked by Norrie 7

2007-05-11 05:13:27 · 6 answers · asked by Anonymous