Physics - December 2006

2006-12-12 13:27:26 · 5 answers · asked by Mo0Mo0124 2

2006-12-12 13:10:35 · 16 answers · asked by :] 3

2006-12-12 12:52:44 · 1 answers · asked by sexymamabk01 1

2006-12-12 12:47:55 · 1 answers · asked by lil_porky69 1

Forgive my physics ignorance (I'm trying to introduce myself to physics through Stephen Hawking's book) and I see that, given E=mc^2, an object with infinite energy (req'd to travel at the speed of light) would have to have infinite mass, which is his argument against anything being able to travel at the speed of light. The blank I need filled in a little bit is why is it necessary to have infinite energy to travel the speed of light?

2006-12-12 12:21:51 · 7 answers · asked by topher8128 2

How can a woman wearing high heels exert a greater pressure than an elephant?

Why do the small bubbles exhaled by a submerged scuba diver get larger as they float to the surface of the water?
A unit of pressure is called a ___________

Why do you seem to weigh more in the air than in the water?

What is the definition of weight? What is the definition of mass?

2006-12-12 12:19:49 · 5 answers · asked by just_breathe_x3 1

An acrobat on skis starts drom rest 53.2 m aboove the grouund on a frictionless track and flies off the track at a 48.6 degree angle above the horizontal and at a height of 10.4 m. Disregard air resistance.

A)What is the skier's speed when leaving the track?

B)What is the maximum height attained?

2006-12-12 12:13:01 · 3 answers · asked by TheThing 2

2006-12-12 12:04:03 · 3 answers · asked by mikkinumberone@sbcglobal.net 1

has anyone proven that the electron is slowing in its speed of orbit around the nucleus ? if not ! does this not prove the concept of perpectual motion and defy the truth of thermal dynamics ! what about string theory! and the concept of space as a vacume !creating energy ! is space slowing down or accelerating? please inform me thanks

2006-12-12 11:58:34 · 4 answers · asked by daniel e 1

Does anyone know where I can find the steps Marie Curie took in her experiment that discovered radiation?

2006-12-12 11:19:07 · 2 answers · asked by megs_0507 2

I know this may seem stupid, but I need to know how thermal energy is transferred in a double glazed window - how does the window keep the heat in the house, and also stop the cold air from getting in etc? I know the air trapped between the 2 panes is for insulation, I also know that the metal is good for radiation and conduction - (am i right?) but can someone explain this in physics. Thanks in advance.

2006-12-12 11:07:31 · 7 answers · asked by Anonymous

the equation is KE=1/2 *m*v^2

2006-12-12 10:24:41 · 6 answers · asked by Fall Down Again 2

The force needed to bring the car to equilibrium is 0. Why?
Please help me understand. Please don't post if you don't know or have no intention of helping.

2006-12-12 10:15:20 · 7 answers · asked by Anonymous

How are LEDs similar to incandescent light bulbs? how are they different???? plz i want the answer so bad...because the teacher will check it 2moro??? plz...10 points infront of you;)

2006-12-12 10:09:48 · 2 answers · asked by hey 3

acceleration is .46m/s^2, how long would it take them to go 10 m.

I know the answer is 6.5 seconds, I just don't know how to find 6.5 seconds.

2006-12-12 10:01:45 · 3 answers · asked by w_xsoadx_w 2

2006-12-12 10:01:16 · 3 answers · asked by Anonymous

2006-12-12 09:44:54 · 6 answers · asked by Family Tech Support 3

2006-12-12 08:50:25 · 2 answers · asked by btf2015 1

MSN Encarta defines it as :
electricity (noun) - energy created by moving charged particles: a fundamental form of kinetic or potential energy created by the free or controlled movement of charged particles such as electrons, positrons, and ions

In the 17-1800's, the fathers of modern electrical engineering believed there was a thing called the Aether. It was the assumption at the time that everything including the vacuum was permeated by cosmic energy in vast amounts. It was thought that one could neither create nor destroy energy, and even Einstien incorporated it into his E=MC2 equation (recently disproved). Today we call the "Aether field", Zero Point Energy, and I believe it behaves in a similar manner as wind which affects the particle-spin of the electrons, producing a magnetic field which dictates the boundaries of the flow. This would account for the necessity of electrons to exist in 2 states: quiescent, and active. What do you think?

2006-12-12 08:29:52 · 6 answers · asked by Jimmy S 1

Is the atom a proven thing? can we see somethign that small?

And also i done get how its mainly empty space with micro particles inside..... that would mean everything is mainly electricity, which ould make the world collapse...

Somethings i dont believe liek the size of an atom around the subatomic particles, the fact weve never touched anything ect...

Plz explain to me the atom better, because i cant get my mind off of it, im always thinking man everything we see is empty and its just tehre because light is bouncing off of the empty space field of atoms...

kinda depressing lol.

But i just cant comprehend the fact everything may be mostly empty space and hw we are made solid, and all touchable matter....

Were does god come into this, (alternate question if you feel liek answering)

2006-12-12 07:56:17 · 5 answers · asked by Aaron T 2

I read about how certain equations which we use conveniently now came about, with equations substituting into more equations and so on. Is there any reason in physics why some equations are altered in certain ways and substituted in another? Or is the formation of equations merely a process without reason?

2006-12-12 07:28:25 · 4 answers · asked by luv_phy 3

but what about this one?

5. Explain the relationship between the second law of thermodynamics and energy conversion using an example.

thanks for any help :D

2006-12-12 07:13:19 · 2 answers · asked by Anonymous

an ant walks 14cmN, 8cmS then 27cmE and 9cmW. what is the displacement of the ant relative to the starting point?
Please

2006-12-12 07:07:18 · 3 answers · asked by johnfisherdude 1

Imagine a small device that resembles a ferris wheel. There are magnets spaced equally around the rim. There is another strong magnet at the bottom such that when the wheel turns each magnet around the rim passes close to it and is pulled by it causing the wheel to speed up.

Normally the wheel would slow down again as the rim magnet passes the stationary one and is attracted in the opposite direction. I get that. But imagine each rim magnet is enclosed in a small superconducting box which blocks magnetic fields. One side of the box has hinges so that it can open as it approaches the stationary magnet and thus the magnet within will be drawn toward the stationary magnet and speed the wheel up. As it passes the stationary magnet the box closes preventing the attraction that would normally slow the wheel again.

A bit of the wheel's spin energy is used to open and close the box but if the wheel is large enough and the boxes small and light enough there should extra energy left over.

2006-12-12 06:57:32 · 4 answers · asked by Allen M 2

Does anbody know a website that i can visit that has circuit diagrams that enables you to enter your own variables and get the results.
Thanks

2006-12-12 06:16:35 · 5 answers · asked by anthony r 1

A glass contains 0.25kg of water at 0.0.15kg of ice,also at 0 .is added to the water and it is noticed that after 11 min. all the ice hasw melted and all the water is now 15.Assuming that the thermal capacity of the glass may be ignored.

2006-12-12 05:52:57 · 2 answers · asked by candice m 1

It seems mathematically impossible for time to not have a beginning since you can't have infinity plus one. In other words, it would be impossible to ever get to this point in time if infinity is behind us.

2006-12-12 05:50:43 · 7 answers · asked by mikearion 4

Ok I have a series-parallel circuit. I know that:
V(T) = 60 V
I(T) = 2 A
V(R2) = 30 V
R(3) = 30 Ohms

I have to find

V(R3)
R(2)
R(1)

Now I find V(R3) I think by doing the following:

V(R3) = V(T) - V(R2)
V(R3) = 60 V - 30 V
V(R3) = 30 V

If that is correct please... I beg you... Help me Find:

R(2)
R(1)

In that order. Please. I'm dying here! I have till tomarrow to do this... or i'm in TROUBLE... if you know what I mean. And If please don't leave mean or rude comments. If you don't know that's cool. But I'm in need of some serious help here. I would post a diagram, but I can't do that on here but I can tell you that there are 3 resistors. Imagine a square box. Now make a line down the middle. Now put in a resistor on the right side of the box. now put another on the bottom right side. now put one on the line that divides the box in half. now on the left side is the voltage. I hope this help... Ok I'm going to shut up now.

Thank you deeply for any help you can provide me.

2006-12-12 05:49:47 · 6 answers · asked by ? 2

I was watching a TV programme, last night on Discovery Science, called 'Universe', and it was discussing the origins of the universe. They said that before the big bang there was nothing, no matter and no time. Suddenly there was an explosion of energy (a reaction of nothing with other nothingness, perhaps?), and the process of the big bang began.

Don't you think that the idea of energy being created from nothing takes as much of a leap of faith as believing in creationism?

Bear in mind, I actually air on the side of science in most cases; for example, I believe in evolution. I just can't see the logic in something coming from nothing.

2006-12-12 05:45:55 · 11 answers · asked by Anonymous

when you invert the weight of something by 2 g's, do you just multipily the gravity(9.8) by 2?

2006-12-12 05:26:03 · 5 answers · asked by ndesrosiers27 1