Physics - October 2006

2006-10-29 18:15:25 · 4 answers · asked by Jennifer T 1

if fission and fusion provide energy,why is it not possible to start with a nucleus,make it undergo fission and fusion repeatedly and continiously ,and obtain large amount of energy ?besides ,if it is possible ,all the energy we require can be satisfied by a single nucleus undergoing fission and fusion.

2006-10-29 18:01:08 · 3 answers · asked by barath m 1

does it actually exist? think about this, we only "sense" objects, whether through our sense of touch, smell, taste, sight and hearing, which is then translated to the brain to form a picture or shape or sound of an object....so, my question may seem far out there, but are our brains only creating these objects from data that it receives?...and in reality we only perceive and "see" and "feel" etc. these objects in our mind's eye?.. Do objects cease to exist if there is no brain there to sense it?...

2006-10-29 17:45:13 · 4 answers · asked by michal d 2

light is invisable untill it reflects off some thing
the darkness disapears when light shines off things
no things the light just remains unseen untill it reflects of anything
that reflection og light is only because the atoms distorting the waves of light by interferance of the light and the orbital planes
of the electrons of which the seen object consists of
the quality /quantity frequency of the orbital electrons and protons setting up the spectrun of visable light
also i feel light is strictly speaking particle that gets released in waves
that light electron that hits an object causes the opposing electron to continue in the same direction that the given electron then is continually changes at the atomic level despite seeming to be light comming from far away the actual electron we see is as an effect much as a wave in water is a passing affect
that the water molicules making the wave pass on the wave yet the water perticle remains stationry

2006-10-29 17:44:36 · 3 answers · asked by Anonymous

(a) 4 times greater than the force of the tractor on the trailer
(b) 2 times greater than the force of the tractor on the trailer
(c) equal to the force of the tractor on the trailer
(D) 1/4 the force of the tractor on the trailer
(e) zero since the tractor is pulling the trailer forward

2006-10-29 17:40:56 · 1 answers · asked by Anonymous

what if air pressure is only caused by forcing the orbiting neutrons and electrons orbital planes into a lower orbit
what happens when orbital planes are forced into contact ,are forced into closser and lower orbits
eventually they would change state?
but when released reform instantaniously into air but in thier changed state want to remain sepperate but eventually forced into the field of affect s interacting with each other
say it better if im wrong
i see it as forcing two magnets to gether both pushing appart yet being forced to gether ,same as air presure pushind other orbiting fields of affect

2006-10-29 17:31:09 · 2 answers · asked by Anonymous

(a) 1/4 as great
(b) 1/2 as great
(c) 2 times greater
(d) 4 times greater
(e) unchanged

2006-10-29 17:12:22 · 5 answers · asked by Anonymous

Pretend that you have taken one step on the ground and have traveled 30 cm. Now, if you were elevated by 50,000 feet from the ground and taken the same step then landed back down, would you have traveled the same distance? or did you travel further than 30 cm? Why????

2006-10-29 16:22:16 · 5 answers · asked by petswodahs 1

Pretend that you have taken one step on the ground and have traveled 30 cm. Now, if you were elevated by 50,000 feet from the ground and taken the same step then landed back down, would you have traveled the same distance? or did you travel further than 30 cm?

2006-10-29 16:21:17 · 3 answers · asked by petswodahs 1

before the total pressure you feel is triple that of atmospheric pressure at sea level (itself about 100,000 Pa)*?

2006-10-29 16:17:56 · 3 answers · asked by gi_crunch 1

A car of mass of 1500kg traveling at 45.0km/hr enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires. What is the radius of the turn if the angle = 20.0 deg(assuming the car continues in uniform circular motion around the turn)?

2006-10-29 16:14:55 · 3 answers · asked by Mich W 1

A 0.170 kg projectile is fired with a velocity of +710 m/s at a 2.00 kg wooden block that rests on a frictionless table. The velocity of the block, immediately after the projectile passes through it, is +45.0 m/s. Find the velocity with which the projectile exits from the block.

Can someone help me with this problem?

2006-10-29 16:13:02 · 3 answers · asked by Confused 1

A 65.0 kg person, running horizontally with a velocity of +3.68 m/s, jumps onto a 12.2 kg sled that is initially at rest.
(a) Ignoring the effects of friction during the collision, find the velocity of the sled and person as they move away in m/s
(b) The sled and person coast 30.0 m on level snow before coming to rest. What is the coefficient of kinetic friction between the sled and the snow?

Can someone help me work this?

2006-10-29 16:12:30 · 2 answers · asked by Confused 1

2006-10-29 16:06:30 · 8 answers · asked by mkanm2002 1

The decrease in temperature coupled with the low density of the air in the mesosphere (about 1 gm-3; at the stratopause, or a thousandth of the density at sea-level, to 100 times less at the mesopause) means that the mesosphere includes both turbulence and atmospheric waves which have a wide range of spatial and temporal scales. Such motions are important not only because of the mixing of chemicals that occur as a result, but also because the mesosphere is the region of the atmosphere where spacecraft on re-entry start to feel the background wind structure, rather than just aerodynamic drag. Some of the small-scale waves drive an average seasonal flow upwards from the lower summer polar mesosphere across the equator and down deep into the winter polar stratosphere.

I am having a hard time comprehending it, thank you!

http://library.thinkquest.org/21418/spacee/Mesos.htm

2006-10-29 16:03:04 · 6 answers · asked by terra_chan 4

Theoretically speaking, if you were to travel at the speed of light, time would pratically freeze relative to you. What would happen if you traveled faster than the speed of light?

2006-10-29 15:57:53 · 9 answers · asked by petswodahs 1

Hi,
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Research Topic, TOE

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Physics Experience, either degree/published author/or notable experiences

Considerable knowledge of Quantum Mechanics and Antiparticles

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OPINIONS/INTERVIEWS from qualified Physics persons would be a wonderful addition to my research project, even if you are too busy to provide information over an extended period of time, it would be greatly appreciated if you could fill out a questionnaire by e-mail or snail mail (postage provided). All information provided will be cited with your name and titles.

2006-10-29 15:54:43 · 1 answers · asked by lyndee_michelle 1

2006-10-29 15:51:07 · 1 answers · asked by jayanth v 1

burn differently in different temperatures? I know, of course, that rain or snow or other weather related elements would affect it, but what about two environments where, assuming no rain/snowfall, the only difference between the two is an extreme difference in temperature? Thanks!

2006-10-29 15:50:43 · 5 answers · asked by tagi_65 5

2006-10-29 15:42:02 · 2 answers · asked by webradio 1

Why sir isaac newton chose to publish works of Ibnal Haitham to become scientist.Ibn al haitham gave the Refraction of light through transeparent object, discovered optics and magnifying glass and discovered gravity as force, in 1020 A.D

2006-10-29 15:39:33 · 5 answers · asked by Anonymous

light particles have mass and can be affected by gravity,they also can travel hundreds of thousands of light years through space unchanged carrying images of its origine.
how are light particles created and what part of an atom do they come from.
what creates its propulsion and determines its direction.

2006-10-29 15:36:30 · 2 answers · asked by aalbatross 2

The center of gravity of a loaded truck depends on how the truck is packed. If it is 4m high and 2.4 m wide and its CG is 2.2m above the ground how steep a slope can the truck be parked on without tipping?

2006-10-29 15:35:54 · 3 answers · asked by Anonymous

2006-10-29 15:17:38 · 13 answers · asked by darkangelinslc 1

2006-10-29 15:13:25 · 22 answers · asked by chip b 2

a ball sliding from zero velocity through a concave arc. The question is (what is the velocity of the ball when passing 0.75r).
(r=radius of the arc)...so the ball is sitting above and then it will be left to go down under the influence of gravity...the ball will go down to the lowest point in the arc (or cycle) then it will rise up again to the other direction...can I calculate its velocity when it pass 0.75 r?

2006-10-29 15:09:15 · 3 answers · asked by aaaa e 1

They say that the Universe is expanding
Into what? What is currently in the area into which it is expanding?

2006-10-29 15:06:06 · 20 answers · asked by videoviewni 1

if i were to attach an object to a tennis ball with velcro, it would stick, but if I were to spin it fast enough [like a planet}, centrifugal force would force the object to fly away from the ball, right?

So how do "spaceballs" (planets, etc) manage to glue objects to their surface?

2006-10-29 14:58:19 · 12 answers · asked by Anonymous

2006-10-29 14:55:50 · 8 answers · asked by ssshhh 3

How much of what kind of energy is required to warp the fabric of space to create a signifcant distortion? Does a supernova with its huge energy output, do this?

2006-10-29 14:45:46 · 2 answers · asked by primordial_primate45 2