Physics - December 2006

2006-12-08 23:05:12 · 5 answers · asked by georgette s 1

It is an established discovery in last 10 years.
Is it Physics, molecular Biology , \Genetics or what.
U need updated references, since as with all discoveries ther are contrarians.
I can refer to an advanced science journal `Nature', which can be accessed in a good library, in case you are really interested. No guesses please.

2006-12-08 22:42:59 · 5 answers · asked by debussyyee 3

pick and explain.:))
dalton, rutherford, bohr, thomson, schrodinger
please please please..:D

2006-12-08 22:41:38 · 4 answers · asked by jojo16 2

i need list of the biggest fossil power plants in germany...could you help me?

2006-12-08 22:27:11 · 1 answers · asked by marikuska 3

.....and is it possible that his "mistake" wasn't quite so big after all.

He liked the idea of a static universe, so introduced the cosmological constant to ensure this - but maybe dark matter in some way does prevent the universe from expanding "forever".

If this sounds like an amateur asking nonsensical questions, you are absolutely correct. But I'm an interested amateur.

2006-12-08 22:26:00 · 4 answers · asked by Hello Dave 6

2006-12-08 22:20:40 · 9 answers · asked by Anonymous

2006-12-08 21:58:37 · 3 answers · asked by eina 2

2006-12-08 21:22:05 · 4 answers · asked by Anonymous

Two shorter cylinders with radii of 0.70 cm and a combined length of 23.00 cm are used. The upper cylinder is made of yellow brass (k = 220 W/(moC), length = 4.60 cm). The lower cylinder's composition is unknown. The temperature where the two cylinders are in thermal contact is 44.0345 oC. What is the rate of heat flow through the combined cylinders?

also, Find the thermal conductivity of the unknown substance. (In W/m/degC.)

2006-12-08 20:05:25 · 1 answers · asked by CarpeDiem22 1

2006-12-08 19:45:21 · 1 answers · asked by h s 1

2006-12-08 19:18:49 · 6 answers · asked by gummystar_00 2

2006-12-08 18:54:18 · 2 answers · asked by bhupesh g 1

--An 80.0 N box of clothes is pulled 22.0 m up a 30.0° ramp by a force of 115 N that points along the ramp. If the coefficient of kinetic friction between the box and ramp is 0.22, calculate the change in the box's kinetic energy.

-- A 103.0 N grocery cart is pushed 12.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. If all frictional forces are neglected and the cart starts from rest, what is the grocery cart's final speed?

i've done some work for each but the online worksheet keeps on telling me my answers are wrong. could somebody please step by step write out how to do these problems (w/ numerical values if possible)

2006-12-08 18:44:12 · 2 answers · asked by Anonymous

I have plans, I have ideas, I've got theories people haven't thought of before. All my friends think I'm crazy but I believe I can do it. So if anyone knows how to cut a hole through nothingness in the space-time contiuum around a wormhole or if anyone can afford ten BESS batteries and send them to me, I'd really appreciate it. I've got two ideas, and one will be really expensive and Hollywood-like. The other will be uninteresting, difficult, more expensive, but has a much higher chance of success.

2006-12-08 18:11:02 · 17 answers · asked by Anonymous

2006-12-08 17:47:01 · 4 answers · asked by Anonymous

2006-12-08 16:31:33 · 10 answers · asked by legionmober 2

2006-12-08 16:28:31 · 5 answers · asked by Anonymous

2006-12-08 16:10:36 · 3 answers · asked by HARISH KUMAR R 1

An ice rescue team pulls a stranded hiker off a frozen lake by throwing him a rope and pulling him horizontally across the essentially frictionless ice with a constant force. The hiker weighs 1040 N, and accelerates across the ice at 1.35 m/s2. What is the magnitude of the tension in the rope? (Ignore the mass of the rope.)

2006-12-08 16:02:17 · 2 answers · asked by Spirit of Vengeance 2

Three blocks are arranged in a stack on a frictionless horizontal surface. The bottom block has a mass of 37.0 kg. A block of mass 18.0 kg sits on top of it and a 14.0 kg block sits on top of the middle block. A downward vertical force of 170 N is applied to the top block. What is the magnitude of the normal force exerted by the bottom block on the middle block?

2006-12-08 16:01:08 · 2 answers · asked by Spirit of Vengeance 2

A 75 kg shell is fired with an initial speed of 125 m/s at an angle 55 degrees above horizontal. Air resistance is negligible. At its highest point, the shell explodes into two fragments, one four times more massive than the other. The heavier fragment lands directly below the point of the explosion.
Problem 9.66

If the explosion exerts forces only in the horizontal direction, how far from the launch point does the lighter fragment land?

2006-12-08 15:54:47 · 2 answers · asked by MattS 1

A tow truck is pulling a car out of a ditch by means of a steel cable (Y = 2.0 x 1011 N/m2) that is 8.93 m long and has a radius of 0.379 cm. When the car just begins to move, the tension in the cable is 801 N. How much has the cable stretched?

2006-12-08 15:30:47 · 2 answers · asked by ????????????????? 2

Hey... I have a few questions.... I am really into rockets... any ideas as to what I can use for like explosives for them.... like I know how then work and all but like a powder or something.... Any ideas??

2006-12-08 15:23:27 · 2 answers · asked by Andrew R 1

It seems to me that the blue light cones are heading your way, cos you see them, and so were the high velocity particles.

2006-12-08 15:17:47 · 6 answers · asked by Anonymous

physics

2006-12-08 14:54:48 · 8 answers · asked by Anonymous

Alright, let say a planet was 35 light years away, and i build a " machine " which let's me be in the planet in a blink . Is this Teleportation? Time traveling? or what?

2006-12-08 14:53:52 · 5 answers · asked by Anonymous

How close are humans from time traveling?, in the past few years, i have read and seen many scientists and others working on this and talking about it more. We all know is possible, but just not yet. Will it be on this century?

2006-12-08 14:53:11 · 8 answers · asked by Anonymous

Do particles at absolute zero degrees(-273 C) vibrate?

2006-12-08 14:39:37 · 17 answers · asked by formystudies3 1

... THE FUTURE ?

I Am trying to get a grasp of how some humans seem to be able to mentally transcend time. I know that our brains have neural networks with energy zooming around through them at the speed of light.

I also have read some of the works of Edgar Cayce, who spent some time curing the ill as well as forecasting the future. I was most impressed with his prediction of a Polar Shift to have taken place in 1998: Today, such a shift has been detected in progress.

"Cayce predicted changes to the earth surface to begin some time between 1958 and 1998. The cause of these dramatic earth changes will be the shift in the world's magnetic poles around the year 2000. Cayce predicted that when this pole shift occurs it would begin reversals in the world's climate so that:

'..where there has been a frigid or semi-tropical climate, there will be a more tropical one, and moss and fern will grow.'


Cayce's prediction of a pole shift occurred in 1998. According to NASA's Goddard Space Flight Center, in 1998 something changed the earth's gravitational field which moved the magnetic poles closer together. The NASA article explained that as the ice on the poles melted, ocean currents moved water toward the equator, which factors researchers believe to be partly responsible, in conjunction with shifts in atmospheric patterns, for this ongoing shift in the earth's magnetic field. This NASA finding affirms Cayce's prediction of a pole shift."

Edgar Cayce on the Future

http://www.near-death.com/experiences/cayce11.html

2006-12-08 14:38:03 · 4 answers · asked by Joe_Pardy 5

Mismas, one of Saturn's moons, has an orbital radius of 1.87 * 10^8 meters and an orbital period of about 23.0 hours. Use Newton's version of Kepler's third law to find Saturn's mass.

Please help me with this problem.
I'm having trouble understanding it.

2006-12-08 14:36:06 · 2 answers · asked by swimmertommy 1