Physics - December 2006

do we break the atmosphere everytime,a shuttle takeoff but if globalwarnin is makin the atmosphere thin, y isn't the gas/ no oxygen space comin

2006-12-29 11:15:06 · 6 answers · asked by BlackIce Mikel 3

why must we use rockets to get into space, could a jumbo jet (or similar) be converted and used to fly upward in spirals, carrying its own fuel/air mixture for once above useable oxygen

2006-12-29 10:20:33 · 14 answers · asked by Anonymous

I see people comment that they hate the metric system. If we had a race, who thinks they could calculate how many inches in 12 miles faster than I could calculate how many centimeters in 12 kilometers? I'd like to start a poll.

Other examples:
What's the weight of 1 gallon of water and mass of 4 liters of water?
What's the dimensions of a cube with volume of a gallon - or 8 liters?
How many tablespoons in 2/3 cup - or milliliters in 1/2 liter?

Can any metric haters justify their preference for a more difficult system?

2006-12-29 10:01:25 · 12 answers · asked by sojsail 7

I have read and heard that if an observer were to get sucked into a black hole that the observer wouldn't necessarly notice. Thus, if our solar system got sucked into a B.H. it wouldn't necessarlly matter to the everyday goings on in life.

OK, but if an observer or the solar system or whatever got sucked into a B.H. wouldn't it eventually hit the super dense object that has warped space time into a black hole? Wouldn't you notice that?

Thanks in Advnance for helping a layman.
S.B

2006-12-29 08:32:51 · 5 answers · asked by Siamese B 1

Visitors to your house who keep their homes very warm in winter notice that it is cooler when they arrive, while you feel very comfortable at the cooler temperature.

2006-12-29 07:53:09 · 4 answers · asked by Anaksonamun 2

If we all made an agreement to pass to all our next generations in future to beleive that they must come meet us from future on Specific Date as soon as they can reach a solution to travel through time? Will they really come? .. for example we can make this meeting tommorow and all of us swear that they will pass this agreement to their sons and grandsons .. etc ... will it work ?

2006-12-29 07:46:50 · 5 answers · asked by The_Architect 2

a. What is your average velocity?


b. Do you get the same answer if you drive 1.0 × 10² km at each of the two speeds?

2006-12-29 07:41:07 · 2 answers · asked by Anonymous

I would like to hear the logic, please include any and all references if possible.

2006-12-29 07:28:30 · 17 answers · asked by leseulun 2

Wave propagation theory shows that positive forces are additive to negative forces effectively canceling them or reinforcing them dependant upon phase.
For example: sin(x) - sin(x) = 0 (on same domain).

The theory also shows that an electrical (E) and magnetic (H) component are present at right angles to one another when inducing current through wire (right-hand rule). Say an apparatus were designed to generate the E and H components separately then feed them to the same line 90 degrees out of phase, would this induce a tangent waveform perpendicular to the line because every 180 degrees the fields would collapse if one were to use the definition sin(x)/cos(x) = tan(x)?

Now if that premise were correct, cut the line to introduce a standing wave that would cancel the E and H fields to produce a null field. Is this an example of tan(x) - tan(x) = 0? If so, then this would produce the case of tan(pi/2) - tan(pi/2) = 0.

2006-12-29 06:55:28 · 2 answers · asked by carmicheal99 1

2006-12-29 06:51:34 · 5 answers · asked by ? 4

Law of Conservation of Energy states: Energy cannot be created or destroyed.

Could be the law has its flaws? Where did magnet get its energy from? And magnet doesnt seem to lose power at all.
Similar to gravity, i have no clue to its answer.

2006-12-29 06:13:55 · 6 answers · asked by JJay 2

2006-12-29 06:08:32 · 10 answers · asked by damelody 2

And if it is real, how is it done?

2006-12-29 05:14:09 · 14 answers · asked by jahnursing 1

Explain how physicists are able to “look” at very small particles even though these particles have dimensions much smaller than the wavelengths of visible light. What actually limits our ability to “look” at very small particles?

2006-12-29 05:05:17 · 3 answers · asked by alawrence108 1

When should the equation velocity=displacement/time be used instead of using these equations like v=u+at, v^2=u^2+2as, s=ut+1/2at^2 or s=1/2(u+v)t be used.
When should we use the u,v,s,t equations be used.
When should the equation velocity=displacement/time be used??

2006-12-29 04:57:45 · 5 answers · asked by Anonymous

i am a 5' 10" male that weighs about 185 pounds.. let us suppose that suddenly , in a freak occurrence, that my skin turns to solid neutronium...assuming that such a thing is possible, how much do i weigh, now?

2006-12-29 04:02:41 · 12 answers · asked by luckily77777 2

For Example No Fruits or Vegetables are square or rectangular in shape. Why is it so?

2006-12-29 03:53:48 · 10 answers · asked by dengu d 1

plz read this before answering

take a rigid,uniform ring.now put some force on it to rotate it.now by some arrangement remove all the external forces from its vicinity.

now if U see the ring it will be rotating and each of its particle is undergoing a circular motion.

----who is providing the 'centripetal force' to particle now?.and
----shouldnt the ring eventually stop without any external force?.
(i assumed a complete inertial frame of reference)

please explain in detail.

2006-12-29 03:43:54 · 11 answers · asked by Anurag ® 3

2006-12-29 03:26:04 · 6 answers · asked by christopher w 1

2006-12-29 03:17:00 · 1 answers · asked by Anonymous

Does it have to do something with La Chatelier's principle?

2006-12-29 03:14:55 · 4 answers · asked by bl00ish 2

You have two vessels connected via tiny pipes to each other and to a pressurized container of "Ideal Gas". The two vessels are "insulated" and their temperature can be changed and maintained at any constant value. When you fill them with the gas, both vessels are at the same temperature. When filled to a desired pressure, you close off the supply container and a while later, close off both vessels (equal pressure in both vessels). Next, you change the temperature of one of them (for the sake of argument: you heat it) while maintaining the other at the original temperature. When you open valves to connect the two vessels to each other and let the pressures reach steady state value(s) what is the relation between pressure in the "colder" vessel to the pressure in the "warmer" vessel?
I do know the answer, and have even verified the theoretical predictions by experiments, I just want to see if you can determine the answer.

2006-12-29 03:02:24 · 4 answers · asked by Anonymous

height of wedge h. & inclination theeta

2006-12-29 02:49:40 · 2 answers · asked by Anonymous

2006-12-29 01:56:25 · 22 answers · asked by siva2kumar2 1

The systems perspective on organizations and communication

2006-12-29 01:45:16 · 6 answers · asked by Anonymous

2006-12-29 01:39:40 · 2 answers · asked by Anonymous

i mean why is the universe here?

2006-12-29 01:15:12 · 18 answers · asked by mrg5834 1

An object is dropped from distance d=1m about the planet A's surface, how much time does it take to land?
take the mass of the planet to be 1.99x10^30kg. Radius of planet= 6.37x10^6m.

The answer given by our teacher is 7.8x10^-4s but my answer is about half of that.
I used P.E. at 1m= P.E. at surface of planet+ K.E. at surface of planet
then used time=distance/ velocity
so what is wrong?

m=meters
the whole dropping happened on planet A, an imaginary planet.

2006-12-29 00:37:06 · 3 answers · asked by Anonymous

1 dimension is a dot,2 dimension is a line, 3 dimensional;width,length n depth..4 dimension??

2006-12-29 00:36:58 · 10 answers · asked by asy³ ¬¬¬¯¯¯¬¬¬ º°®½ 1

2006-12-29 00:26:11 · 7 answers · asked by Anonymous