Physics - January 2007

The American physical chemist Gilbert Newton Lewis proposed a unit of time called the "jiffy". According to Lewis, 1 jiffy = the time it takes light to travel one centimeter. (a) If you perform a task in a jiffy, how long has it taken in seconds? (b) How many jiffys are in one minute? (Use the fact that the speed of light is approximately 2.9979 x 10^8 m/s.)

2007-01-23 03:10:40 · 4 answers · asked by 123haha 1

what are two forces acting on my body and what is the equal and opposite force

2007-01-23 03:07:29 · 3 answers · asked by Anonymous

2007-01-23 02:55:35 · 9 answers · asked by Kitty 1

Jaqueline and Gilles were playing with rocks at the edge of a cliff which was 80 m above the beach below. Gilles threw a 1 kg rock upwards with a speed of 30 m/s. Let the acceleration due to gravity be -10 m/s^2.

I've calculated kenetic and potential energy

I need to know how to get the speed and height of the rock after each second that passes by. Any help is greatly appreciated.

2007-01-23 02:49:10 · 3 answers · asked by Anonymous

As i ve read before scientists have managed to teleport an electron over a very short distance.
Does the process involve disintegrating the electron into smaller parts and then reconstructing again?

I need to know what are these 'smaller parts' and how this process of disintegration goes about???

2007-01-23 02:41:14 · 3 answers · asked by sh 1

2007-01-23 02:40:12 · 2 answers · asked by darestobelieve 4

After all one single thought process of a human being can involve millions of neurotransmitters which are all electrical impulses that travel close to the speed of light anyway.

Is this a crazy theory???

2007-01-23 02:19:43 · 11 answers · asked by Anonymous

Is there really length contraction or it is because the object is travelling at too fast a speed thus before light can be reflected from the front of the object to the observer, the back of the object has already catch up. Thus this created a false impression to the observer that the object length has contract while the true is it just seems to contract.. A false impression created by the eye..

I not sure whether is it right to think in this way.. feel free to comment

2007-01-23 02:12:46 · 4 answers · asked by sh 1

Say i was traveling on a beam of light (of course at speed c) and i take out my mirror and i look at myself!
As the speed of light is constant in any frame i would see my reflection in the mirror. That is because i too would see light travel at speed c relative to me.

But my question is what would an outside observer (in a stationary frame) see? He would see both me and the light beams(which were relfected from my face) both travel at the same speed right?
So from his point if view would he be able to see my face in the mirror? ( i think he will see me and the light reflections from my face travel together)

2007-01-23 02:01:21 · 7 answers · asked by sh 1

2007-01-23 01:58:31 · 9 answers · asked by Lai Yu Zeng 4

what was the initial and fianl temp of the iron?

2007-01-23 01:58:01 · 1 answers · asked by Anonymous

Has anyone ever wonder if teleportation could come to a reality one day?

Does anyone have any clue how it can be done if possible or the physics behind? Or will this be defying the laws of relativity?

2007-01-23 01:44:07 · 12 answers · asked by sh 1

2007-01-23 01:43:28 · 8 answers · asked by norwood 1

2007-01-23 01:42:37 · 5 answers · asked by norwood 1

2007-01-23 01:41:48 · 7 answers · asked by norwood 1

2007-01-23 01:41:03 · 7 answers · asked by norwood 1

2007-01-23 01:39:45 · 4 answers · asked by norwood 1

Suspending myself in midair? If so, why not?

2007-01-23 01:31:15 · 6 answers · asked by Sir Alex Awesome Valentine, Esq. 3

waiting for answers...........................

2007-01-23 01:29:14 · 4 answers · asked by pankaj 2

2007-01-23 01:26:52 · 7 answers · asked by jainee s 1

How is it that when your driving if you press the brakes slightly rough, the passengers in the car are flung forward with more force than yourself?

2007-01-23 01:22:49 · 3 answers · asked by drummer4metal616 1

If our sun collapsed into
a black hole (not really a
possibility), what would
happen to Earth's orbit?
Would it...
(a) Begin to spiral inward?
(b) Continue to orbit normally?
(c) Leave in a straight line,
tangent to the old orbit?

2007-01-23 01:20:50 · 10 answers · asked by Andrew P 3

Details and web sites are welcome, but please explain this simply!

2007-01-23 01:07:56 · 3 answers · asked by Anonymous

What are the different regions of the electromagnetic spectrum and the quantum change on these regions?

our topic is about refractive index..

thanks really for the help..

2007-01-23 01:03:20 · 1 answers · asked by carol 1

2007-01-23 01:01:40 · 6 answers · asked by gbenga adenubi 1

Consider yourself in a spaceship traveling at the speed of light. Would you be able to see urself in the mirror? explain.

My argument, is that: im also traveling at speed c while holding the mirror in front of me. So in order for me to see myself in the mirror the light rays from my face should reach the mirror and back to me.
So once the light rays from my face reflected they are on their own(moving at speed c). My mirror is also moving at same speed.
So what im saying is that the light rays will never reach the mirror; hence i wil not see my image in the mirror.

2007-01-23 00:59:36 · 2 answers · asked by sh 1

In her panic she drops the instrument. Will the instrument stay near her hand? Hit the floor of the elevator? Hit the roof of the elevator? Give reasons for ur answers.

2007-01-23 00:58:59 · 3 answers · asked by clars 1

i wanna know that the energy stored in wood is in which form.
is it chemical or physical,kinetic or potential or any other. let me know

2007-01-23 00:58:51 · 2 answers · asked by Anonymous

only correct answer plz
no details

2007-01-23 00:41:30 · 2 answers · asked by pankaj 2

2007-01-23 00:19:16 · 14 answers · asked by Shubham Agarwal 1