Physics - July 2006

2006-07-17 15:25:12 · 7 answers · asked by Psyengine 7

2006-07-17 14:23:48 · 21 answers · asked by Vivek S 1

Can a rocket produce more thrust when it is in the air because it has air molecules to push against? Can the presence of air molecules cause more pressure to build up inside the thrust director and thus increase the amount of thrust per fuel burned? Do any physics buffs have input on this question?

2006-07-17 14:17:39 · 5 answers · asked by psychetechnic 2

2006-07-17 14:15:26 · 5 answers · asked by Anonymous

Just for fun. Time relative to energetic states changed as velocity changes in a thing. The faster the thing the slower the time in it, theoretically comparable to the time for me watching it, i.e. for my five mintues it is aged 2 minutes. If watching it from behind, as it moves away from me the light is subtracting from itself one hertz per second so that the apparent lower colors of the spectrum fall below light wave definitions to radio waves. Viewing the thing from the front, its light spectrum is shifting up or adding in the same rate as the subtraction noted from the rear view for it, so that its radio waves become infra red or heat, its gamma become cosmic. Question: How was the normal frequency spectrum defined for light and at what velocity (ignoring earth/solar orbit and solar/galaxy orbit velocities).

2006-07-17 14:12:09 · 5 answers · asked by Psyengine 7

2006-07-17 13:40:17 · 9 answers · asked by jason 2

I'm talking about the ordinary little party sized balloons. How much would that many helium balloons cost to buy? Has anyone actually held on to enough balloons to float away? I hope they had strong arms.

2006-07-17 13:26:31 · 4 answers · asked by Anonymous

I have devised a way to produce electricity that has not been done.I need to procure funding to finish the research and develop it through the government.I would be glad to work with a college if need be.I've sat on this for many years and almost got killed over it in the late 80's.I am not educated in matters such as these,and I need a learned partner.This will change the way electricity is peoduced,and I will gladly share its benefits with someone who will help me make it happen.I've waited for the right time,and I believe that time is now.This is my starting point.Notes and logs will be kept to preserve the integrity of events.That is to include every answer given to me on this question.Future questions may be directed at engineers,but your input will be appreciated.Right now,I'm trying to get started on bringing it into existance.Thanks!

2006-07-17 12:51:48 · 7 answers · asked by Rick 4

2006-07-17 12:32:49 · 8 answers · asked by Noh g 1

If you could see electricity, would it look like lightning?

2006-07-17 12:31:04 · 13 answers · asked by GeorgieBoy 1

2006-07-17 12:22:24 · 4 answers · asked by Anonymous

2006-07-17 12:20:30 · 6 answers · asked by criss 2

So, okay, I was just thinking (crazy concept, I know).

So, consider, with reference to conservatin of energy: If the universe is infinite (giant vacuum with stars and galaxies that came from the big bang; I'm still not sold on the big bang or the big suck), and stars radiate energy in the form of photons, and convection happens on a 3D cosmic scale (or at least we consider energy as concentrated and wanting to escape, kind of like pressure), will galaxies and/or the universe eventually radiate off all of its energy into whatever lies beyond the galaxies?

IE, if we assume we're in an infinite void, and the very edges of the universe /galaxy are radiating photons outward into empty space, within nothing to absorb them, pull them, etc. Will the universe become less energeting through essentially evaporative cooling. IE, the photons / electrons / whatever readiating out into empty space removes energy from the universe.

2006-07-17 12:00:09 · 10 answers · asked by Michael Gmirkin 3

Hey guys, got a question,
Has technology developed enough in order to create something like "Starship" where you can just walk in Gate A and appear at Gate B. If it has been developing or if there is some progress on that could you please send me the source so that I could read that and present...

Thanks

2006-07-17 11:51:14 · 9 answers · asked by walkingdeath 2

2006-07-17 11:27:31 · 22 answers · asked by Mean Mr Mustard 4

http://video.google.com/videoplay?docid=-4322650841860671469&q=world+trade+7
This vidieo gives a little more detail to my question. I've asked this questions several times. Its directed to the people who call us realist "crazy conspiracy theorist". Take the time and give me a scientific response to show how the World Trade Centers 1&2 and building 7 could have fallen at freefall speeds meeting no resistance. Without it being a controlled demolition. I'm fair I'll give best answer if you can disprove this "theory" beyond a reasonable doubt. Even on the far outside number of 12 seconds would not account for all the resistance of the concrete and steel of the rest of the building. If you disagree prove it. And for supporters add comments if you wish.

2006-07-17 11:05:42 · 11 answers · asked by captpcb216 2

what happen with light where it goes?

2006-07-17 11:04:08 · 8 answers · asked by criss 2

A ball is thrown upward from a platform 5.2 m high with a speed of 15 m/s at an angle of 40° from the horizontal. What is the magnitude of its velocity when it hits the ground? Note: You need to find the time taken first by solving a quadratic equation. Answer is t = 2.4 s.

2006-07-17 11:03:35 · 5 answers · asked by Lou 1

A rock thrown horizontally from the top of a radio tower lands 17.0 m from the base of the tower. If the speed at which the object was projected was 9.50 m/s, how high is the tower?

2006-07-17 10:58:31 · 5 answers · asked by Lou 1

A boat capable of making 9.0 km/h in still water is used to cross a river flowing at a speed of 4.0 km/h. (a) At what angle must the boat be directed so that its motion will be straight across the river? Express the angle of the boat in the upstream direction from the direct path across the river. Also what is its resultant speed relative to the shore

2006-07-17 10:57:42 · 3 answers · asked by Lou 1

When you blow your horn while driving toward a stationary listener, an increase in frequency of the horn is heard by the listener. Would the listener hear an increase in the frequency of the horn if he were also in a car traveling at the same speed in the same direction as you are? Explain.

2006-07-17 09:48:45 · 10 answers · asked by Donnie B 1

2006-07-17 09:47:33 · 4 answers · asked by Donnie B 1

2006-07-17 09:46:11 · 4 answers · asked by Donnie B 1

i am kindly asking you not to direct me to another site because i have tried but failed.thank you.

2006-07-17 09:44:38 · 8 answers · asked by Anonymous

Gravity depends on mass so can we distort an objects gravitational field by manipulating its mass?

2006-07-17 09:29:38 · 9 answers · asked by Anonymous

2006-07-17 09:27:40 · 26 answers · asked by razorross2 1

do you have free-will or is your brain a product of the universal laws> I believe that our abililty to make choices gives us a clue of a spiritual realm>wut do you think>

2006-07-17 09:09:47 · 9 answers · asked by esero26 3

2006-07-17 08:54:44 · 17 answers · asked by Leon E 2

I personally dont because if you think about it if we could go into the future that would mean that all time exsits past, present, and future, all at the same time. And that would mean that if time travel was possible it would have already been invented in the future and people of the future would have already come back to tell and show us. This is my opinion what is yours

2006-07-17 08:40:44 · 22 answers · asked by Kayes24 1

2006-07-17 07:40:30 · 11 answers · asked by star 1