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Physics - July 2007

[Selected]: All categories Science & Mathematics Physics

is it because the shape of the paper plane creates lift. And while the gravity creates a drag, the paper plane flies. I'm not sure. please help me; thnks

2007-07-04 00:07:29 · 12 answers · asked by emo booyyyyyyyyyyyy 1

2007-07-03 23:41:36 · 19 answers · asked by Silkie1 4

One car is moving a 75 m/s and the other is moving at 88 m/s.
Please explain to me. Thanks

2007-07-03 23:23:06 · 5 answers · asked by Anonymous

(a)12 (b)50 (c)3 (d)47 (e)0
Could anyone solve this? explain please

2007-07-03 23:17:36 · 5 answers · asked by Anonymous

is such a patent possible in which only i have the right to create a perpetual motion machine which works on principles of magnetic attraction/repletion...i mean the design dosent matter...the fact is no one else can make a perpectual motion machine based on magnetism and use it.
...its just an example

Now if someone else make another design for this machine which does the same thing and works on principles of magnetism...but the design is different over all than mine...he will not allowed the patent, or any one will not be allowed to use this design he has made cause I have a patent filed.
Is this sorta situation possible?...or is there such sora patent?


tell my if u dont understand

2007-07-03 19:40:42 · 6 answers · asked by Anonymous

Can anyone show or derive an equation so that i can compute for the acceleration due to gravity when a person is inside the earth (or when R is less than Rearth).

2007-07-03 19:32:20 · 4 answers · asked by Anonymous

this is my psychics... i dont get it! so im kinda stuffed. please help me out

2007-07-03 18:20:46 · 13 answers · asked by rooney8 2

2007-07-03 17:51:03 · 14 answers · asked by jeffrey w 1

If the ball lands 8.7m from the point on the ground directly below the edge of the platform, what is the height of the platform?

2007-07-03 16:50:39 · 5 answers · asked by Josh Muller 1

The current flows at .50 m/s.
A) At what angle(s) must the boat be steered?
B) How long does it take to make the round trip? ( assuming that the boat's speed is constant at all times, and neglect turnaround time.)

2007-07-03 16:44:58 · 3 answers · asked by Josh Muller 1

I saw a video where a balloon was put inside a cup, as much as it could fit. Then adhesive tape was put around the cup and the balloon so , im guessing, so the balloon is stuck in that cup. Then a pin was put in the balloon and it made a whole but the balloon didn't pop. Why didn't the balloon pop?

2007-07-03 15:48:37 · 3 answers · asked by House music rules 1

I know that all things have a flash point but what is the max temp something can be.

2007-07-03 15:45:26 · 8 answers · asked by happy al 1

It is for project purpose.
The equipments should be improvised materials
very urgent

2007-07-03 15:30:36 · 3 answers · asked by malukollam20 2

A recording engineer works in a soundproofed room that is 44.0 dB quieter than the outside. If the sound intensity in the room is 1.20*10^-10 W/m^2, what is the intensity outside?

how do you work this?

2007-07-03 13:50:03 · 2 answers · asked by Anonymous

Does anyone know if the string theory has been proven correct? If its veracity is yet to be experimented, does anyone think it will actually replace point particles used in modern day science?

2007-07-03 13:39:53 · 7 answers · asked by "I think, therefore I AM 3

I have a question about how to read the kinetic energy on a potential energy graph. I can't post the graph, but if you think you can help I can email you the question.

Thanks

2007-07-03 12:44:24 · 4 answers · asked by Anonymous

I have no idea what they are talking about. It is a question with reference to a Caltech Video I watched.

What is this Single Unified Theory?

2007-07-03 12:44:15 · 3 answers · asked by emmasahottie 3

2007-07-03 11:17:44 · 5 answers · asked by PT109 1

i once was on a site that told you how any of our everyday objects could bring the world to an end. does anybody know any of these or know the website that it was on? or know any other websites?

2007-07-03 10:18:41 · 9 answers · asked by Anonymous

In both instances, flying in a plane and scuba diving there is pressure in your ear. Can anyone find a chart on height compared to depth and the amount of pressure there is on your body? Eg. 30 ft deep is equivalent to 10000 ft high, and they both have 2 times the pressure? This is just an example and has no data behind it. That's what I'm looking for. I've had extreme problems in both instances as far as pressure on my middle ear and I want to know what is equivalent in both? Thanks.

2007-07-03 10:05:08 · 5 answers · asked by EagleEye1 2

You are camping on a beach.
How can open a bottle of wine, if you forgot your corkscrew?

2007-07-03 09:58:24 · 9 answers · asked by Alexander 6

If you had a hollow sphere that was perfectly reflective on the inside, and completely inescapable (ie, nothing can escape the interior - this being due to a perfect seal, not because of gravity), and you had a means to turn on and off a light source inside the sphere, and you have a way of observing what happens inside the sphere, what happens when you turn on the light, and then turn it off? Is light forever present in the sphere? And what if we make the assumption that none of the light is lost as heat? Does turning on the light source for longer periods of time add "more" light to the inside - how could this quantity be measured?

2007-07-03 09:41:48 · 17 answers · asked by Anonymous

Before the big bang matter and gravety and atoms pulled and exploded. Something had to make thats happen. And what happed ten seconds before are more. Some don't know thats why God made the whole univers. Things that man can not answer. How did matter atoms form, Threre had to be somthing that made them. It doesn't really matter how small the atoms are, something made them. And also Gravity what made gravity, it wasn't just there. Its like saying a bike apperaed out of the sky.

2007-07-03 07:45:41 · 11 answers · asked by Anonymous

The boxcar moves without friction down the slope
on track inclined 2 degrees to horizon.

What is inclination of the string to the vertical?

2007-07-03 07:35:40 · 4 answers · asked by Alexander 6

2007-07-03 07:33:24 · 5 answers · asked by MADL 2

2007-07-03 07:28:09 · 8 answers · asked by Anonymous

Track gauge is D = 4 ft 8 1/2 inch.
http://en.wikipedia.org/wiki/Track_gauge
Radius of boxcar wheels is r = 1ft.

How many more revolutions did left wheels
of the boxcar, than its right wheels, after
locomotive copletes one loop.

2007-07-03 05:57:46 · 4 answers · asked by Alexander 6

So everyone knows the beat effect, right? When two hypersonic sound waves interfere a beat is produced whose frequency is equal to the difference between the two waves. If the difference is a frequency in the human hearing range, then we hear a sound from the interference.

My question, which I asked before but did not receive the answer I was looking for, is "does this happen with electromagnetic waves?" If two waves, be it UV, X-ray, or gamma, interfere and have a difference that correlates to a frequency in the visible light spectrum, then would you see a light? I know that being exposed to gamma waves would kill you before you had a chance to appreciate the interference or UV waves would burn your retinas. I don't care. Would there be a visible light emission in any case?

2007-07-03 05:56:03 · 4 answers · asked by hung l 2

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