Physics - June 2007

An object of mass = 5.00 is attached to a spring with spring constant = 495 whose unstretched length is = 0.150 , and whose far end is fixed to a shaft that is rotating with an angular speed of = 3.00 . Neglect gravity and assume that the mass also rotates with an angular speed of 3.00

2007-06-23 14:34:20 · 2 answers · asked by amp 1

and not as in all the models i have seen in the upper atmosphere traping heat in causing the green house effect. as co2 is heavier than air and if it does as modern science tells us reflect heat surely it must actualy be reflecting heat away from the planet and not trraping it. i belive gravity is a constant so unless we are pumping co2 into the upper atmosphere how can it get there? aircraft do not fly high enough to escape the gravitational pull of the earth

2007-06-23 13:54:26 · 6 answers · asked by Anonymous

2007-06-23 13:36:49 · 8 answers · asked by krismister06 1

Say you had a 10 pound weight on the ground & you pulled upward with a force of exactly 10 lbs so that the weight was in perfect equilibium with no net force on it (10 lbs down & 10 lbs up). It would be motionless & no work would be being done.

Why couldn't you now just touch it & with no effort, using your finger just push it up with almost no effort, and in this way push it up to 10 feet in the air thereby obtaining all this potential energy "for free" (ie, with almost no effort)?

2007-06-23 12:46:48 · 7 answers · asked by R.D.W. 2

Are they even spherical? If not are the things that make them up perfectly spherical?

2007-06-23 12:44:48 · 9 answers · asked by arcomart 3

Purely hypothetical and will never happen but nevertheless fun and interesting thinking:


Suppose the rope was long and strong enough to support massive amounts of weight and stretched all the way down to earth with you holding onto it several hundred meters above ground level. Would the earth's gravity pull you, the rope and the satellite down to it? Would you be floating there across the world in a day because of its rotation? What would happen if this situation were actually possible, taking into all the effects of physics?

2007-06-23 12:40:17 · 8 answers · asked by blank_words 2

If you had a million mile pole would it hang off the earth or would it curve with the earth

2007-06-23 11:46:03 · 4 answers · asked by hightimes907 the 420 Atheist 2

How long before it deteriorates?

2007-06-23 11:45:27 · 7 answers · asked by Anonymous

2007-06-23 10:35:21 · 6 answers · asked by robert davis 1

What sorts of energies are transformed from the kinetic energy of a projectile, say a 1 kg mass dropped from a metre into a tank of water. Also, are there ways to measuring the forms of energy transferred?

2007-06-23 10:07:31 · 1 answers · asked by Anonymous

2007-06-23 10:03:33 · 3 answers · asked by asef kazi 1

After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 51.0 . The explorer finds that the pendulum completes 104 full swing cycles in a time of 145

2007-06-23 09:55:39 · 5 answers · asked by amp 1

2007-06-23 07:28:45 · 7 answers · asked by rjc r 1

2007-06-23 07:11:16 · 5 answers · asked by Andrew H 2

2007-06-23 06:21:05 · 15 answers · asked by Nat 1

I'll be more specific to avoid confusion. When I flip the light switch, how long before the light comes on? I know that electricity doesn't really move, it just vibrates, but you know what I'm saying. Speed of light in vaccuum, right?

2007-06-23 06:16:57 · 5 answers · asked by Ryan K 2

2007-06-23 04:46:38 · 11 answers · asked by Anonymous

2007-06-23 04:25:19 · 11 answers · asked by curious_inquisitor 1

An electron which falls all the way down to energy level 1 would give off much more energetic light. Why were transitions which ended at energy level 1 were not studied by the unaided eye?

2007-06-23 02:57:50 · 2 answers · asked by twilliam4055 1

Does time come only to a standstill for the travellar at light speed or does it looks to be standing still for the ones who stay behind?

2007-06-23 02:24:38 · 10 answers · asked by eRik 1

i need to know what it is made out of,what it can be used for etc. thanx in advance

2007-06-23 01:29:58 · 7 answers · asked by moulshri_scorpio92 1

2007-06-22 23:21:10 · 11 answers · asked by Navaneeth K 1

2007-06-22 21:11:02 · 8 answers · asked by FEDERITO T 1

2007-06-22 20:33:55 · 7 answers · asked by Jess M. 1

2007-06-22 20:09:20 · 8 answers · asked by formystudies6 1

2007-06-22 19:37:14 · 1 answers · asked by Akilesh - Internet Undertaker 7

So, the Heisenberg Uncertainty Principle states that the location and velocity of an electron can never be determined simultaneously, correct? What if an atom and the surrounding electrons were to be at absolute zero, or 0 Kelvins? Wouldn't that theoretically halt the electron and draw it into the nucleus of the atom, thus making it possible to determine both the location and velocity of the electron?

Please tell me if I am onto something or if I just completely misunderstand all physics.

2007-06-22 17:07:20 · 9 answers · asked by gary_fo64 1

The best way to ask this question is through visualization. Imagine a funnel with a hose sealed to the spout. Then imagine that you are at the beach holding the end of the hose above your head. The hose goes straight down from your hand into the sand at your feet to a depth of three feet underground, then turns out to the ocean and stays three feet underground all the way to where the ocean depth is thirty feet. There the hose comes up from the sandy bottom and opens into the funnel. How big would the funnel have to be to make salt water come spraying out of the end of the hose with enough force to drive an electric generating turbine?

2007-06-22 16:22:44 · 3 answers · asked by Philip M 2

I need a website with information like how many horsepowers it takes to make a 200 pound object go 5 mph, or how to find the peak height of a object that went at a 90 degree angle and stayed in the air for 10 seconds. I need formulas or, at best, a calculator that does it for me. But formulas would be nice. Any information regarding this would be appreciated. Thank you in advance!

2007-06-22 16:07:49 · 1 answers · asked by Brian.E 2

Balloon pressure when full = P1
Balloon Volume when full = V1

Cylinder pressure = P2
Cylinder Volume = V2

Everything else is negligable. How many balloons can I fill?

I can't figure out what I am supposed to solve for...

2007-06-22 15:33:03 · 4 answers · asked by mitmim 1