Physics - March 2007

I often wonder this when I am driving...

2007-03-24 21:23:38 · 9 answers · asked by adamsts54 1

why is antimatter (a kind of molecule) is big that it can be seen by the naked eye, but i can't see it anywhere? and what is antimatter made of?

2007-03-24 21:22:04 · 4 answers · asked by td321123 1

2007-03-24 20:49:02 · 1 answers · asked by Gideon 1

Your trying to swim you go to the bottom of the sea or swimming pool but when you have drowned (died) you rise to the top ?

2007-03-24 20:46:11 · 6 answers · asked by Anonymous

2007-03-24 20:33:34 · 12 answers · asked by shivang g 1

if something were to lift off the ground wouldnt it be out of the earths spin? i can understand why people dont fall over when the earth is spinning under them because gravity attaches them to the earth. but what about something that is not continously attached to to the earth like people or cars.

2007-03-24 20:31:43 · 8 answers · asked by Chemical Coltraine 2

2007-03-24 20:25:04 · 2 answers · asked by Anonymous

can some one please give the derivation of this relationship with explanation and if you could draw some diagrams or find some on net please provide me the links.

2007-03-24 20:20:55 · 7 answers · asked by burhanmz 2

what are other things or surfaces that reflect UV rays?

2007-03-24 20:15:39 · 2 answers · asked by Mujahid E 2

by P= mv I mean the law of linear momentum

2007-03-24 20:12:56 · 7 answers · asked by mikeo853 1

2007-03-24 20:02:39 · 7 answers · asked by Anonymous

Work function- the lowest amount of energy requited to eject an electron fom a substance, i think its doped germanium, but if its doped what should be the doping material to obtain the lowest work function

2007-03-24 19:28:58 · 2 answers · asked by Anonymous

Where on the internet we can find definitions?

2007-03-24 19:25:33 · 5 answers · asked by MM 2

I wonder if it is possible for something to exist that can change weight without changing the amount of matter it contains. Like some mystery substance that if you apply current it will change from 2 lb to ½ lb or ½ lb to 2 lb ether direction is interesting.

2007-03-24 19:15:49 · 12 answers · asked by whatbeuper 2

what do you call that thing that moves side to side on old clocks at the bottom? Whats it for? whats the purpose of it?

2007-03-24 19:12:23 · 7 answers · asked by Anonymous

Let us all be innovative.

2007-03-24 18:22:08 · 8 answers · asked by Anonymous

I assume that the car's frame is zero voltage, so there's a potential difference between the battery and the frame, right?. Does that make the current goes through the appliance to the frame? I can't imagine that the current will return the negative terminal since the frame is too big.

2007-03-24 18:21:16 · 5 answers · asked by tasd 3

I'm study for AP Physics C exam...

I'm usin' Princeton Review AP Physics B & C...

Appreciate if we can work together and prepare together for comin' AP exam!

Peacee

2007-03-24 18:00:11 · 3 answers · asked by Awesome Auzy 2

2007-03-24 17:51:38 · 2 answers · asked by Melissa H 1

2007-03-24 17:15:25 · 6 answers · asked by Anonymous

I dont know about kenetic energy but I did see something once that resembled the refective pattern of light on a lake once. Someone told me that it was kenetic energy. can it be visible in the air? I saw something and cant explain it. can ultra violet light or any gas make this type of energy visible?

2007-03-24 17:02:09 · 6 answers · asked by sam 4

We all know that light travels at about 300,000kmph in vacuum.

But say light enters a madium like glass, water or sodium..... then the speed of light is slowed down (for example in the Bose-Einstein condensate light has been slowed down to a few mph !). So does this mean photons can still exist at speeds below speed c ?

I have heard of something like the atoms in the medium absorbs the light and then emits it again so thats what slows it down but im a bit unclear about how this happens?

2007-03-24 16:54:39 · 5 answers · asked by sh 1

if i stand up on the ground floor outside a building, i feel that the wind around high buildings is greater / heavier than aroun small buildings? why is that ?

2007-03-24 16:15:57 · 2 answers · asked by Wisnu Wardhana H 2

My friend simply does not believe that gravity affects both bullets the same way, etc...
I've told him that, (allowing for human error, ok,) a bullet fired level and a bullet dropped from the same height at the same time will hit the ground at the exact same time. Forward velocity has no effect on gravity's pull. He simply doesn't believe me no matter what I say.
How about some input here? Send answers to:
mmfoud@yahoo

2007-03-24 15:47:54 · 16 answers · asked by joubaur 2

what do sound waves kinda "look like?" i am having trouble finding stuff on the internet. then also do the waves get closer together or further apart depending if the pitch is sharp or flat. any help would be great.

2007-03-24 15:39:33 · 4 answers · asked by Anonymous

Please include 2 or 3 reasons. Thanks.

2007-03-24 15:14:49 · 16 answers · asked by Anonymous

Question #1:
A clam dropped by a sea gull takes 3.0 seconds to hit the ground. What is the sea gull's approximate height above the ground at the time the clam was dropped?


Question #2:
An object is allowed to fall freely near the surface of a planet. The object falls 54 meters in the first 3.0 seconds after it is released. What is the acceleration due to gravity on that planet?

2007-03-24 15:02:30 · 5 answers · asked by Chloe S 2

PLEASE show how you got it

2007-03-24 14:57:36 · 4 answers · asked by Anonymous

Can someone help me with this problem...Thanks
A 1.6 kg block is attached to the end of a 2.0 m string to form a pendulum. The pendulumis released from rest when the string is horizontal. At the lowest point of its swing when it is movinghorizontally, the block is hit by a 10 g bullet moving horizontally in the opposite direction. The bulletremains in the block and causes the block to come to rest at the low point of its swing. What was themagnitude of the bullet’s velocity just before hitting the block?

2007-03-24 14:35:42 · 1 answers · asked by phy123 2

2007-03-24 14:31:48 · 1 answers · asked by Anonymous