Physics - November 2006

If there were really time machines in the future couldn't they come back and tell us.

2006-11-30 03:51:53 · 12 answers · asked by Anonymous

Well the question is easy...do all the mirrors ( or for that matter cameras etc) show the correct image and how do these image depends upon the properties of the plain mirror....

In one line ..How accurate these images are??

2006-11-30 03:43:15 · 4 answers · asked by Anonymous

Their total mass is 4.0kg. Find the individual masses.
Please help me with this problem!

2006-11-30 03:40:23 · 2 answers · asked by icyblueheart 2

I think the air virberates, but how does it make a noise?

2006-11-30 03:17:10 · 4 answers · asked by Jennifer W 1

2006-11-30 03:15:45 · 26 answers · asked by Rekha P 1

i need the material for it

2006-11-30 02:57:21 · 2 answers · asked by Anonymous

Is it electrons? Protons? Everything has atom right? EVERYTHING! So what part of atom is photon? For example, gamma ray given off from a radioactive material, a photon is given off, well what part of the atom is given off?

2006-11-30 02:44:10 · 8 answers · asked by jennifer g 7

And can light travel in reverse? Not as a result of hitting an object.

2006-11-30 02:34:32 · 12 answers · asked by Nick R 2

GCSE

2006-11-30 02:34:03 · 9 answers · asked by tracey g 1

of travel, in a vacuum, exactly 60mph, I was standing on the side of the rode where he released the ball, WHAT would it do?

2006-11-30 02:09:03 · 2 answers · asked by quikonfet 2

its the same question put in a diffrent way.. if im standing in a moving bus, and i jump, will the bus below me keep moving and ill end up at the back. or will i end up at the same place. what ever the question is, i think its something to do with the earths rotation..or its probably a stupid question.

2006-11-30 02:08:24 · 20 answers · asked by ignite_nigel 1

Imagine a lightweight, almost massless meterstick, with a 5 kg mass at each end (like a dumbbell). How much torque would be needed to give this object a rotational acceleration of 6 rad/s2 about its midpoint?

2006-11-30 02:02:43 · 2 answers · asked by James R 1

2006-11-30 02:01:51 · 1 answers · asked by lady_in_blue 1

Can Newton's laws of motion explain the movement of electrons in atoms? If possible, can someone explain how?

(I tried to think along the line of perhaps centrifugal/petal forces, but they don't orbit (according to bohr's incorrect model) in one single plane, do they? So im really lost. Help please)

Hint: A concise + short explanation and links will give u 10 points=)

2006-11-30 01:59:34 · 6 answers · asked by luv_phy 3

Please help me settle an office bet. The hallway outside my office is 133.5 feet long, and the ceiling is 8 feet high. Can a major league baseball player (specifically, Ivan Rodriguez, the catcher for the Detroit Tigers) throw a ball and hit the wall at the other end of the hallway without it bouncing on the ground first? I say yes, and have an expensive bottle of irish whiskey riding on it. Any help you can provide with proving me right (I hope) would be much appreciated.

2006-11-30 01:55:21 · 6 answers · asked by daneel12 1

let us assume two rocks both at same cliff with the same mass are pushed down.one falls down on an elevated platform just below the cliff and another all the way down.
the force in both the cases will be the same as the mass is the same and the acceleration due to gravity is also the same as f=ma.but the damage caused to the platform by the stone which falls on it is surely less when compared to the damged caused by the stone which falls all the way down on the ground below the platform.why is this so?

2006-11-30 01:53:24 · 5 answers · asked by aravind 1

2006-11-30 00:35:41 · 5 answers · asked by Anonymous

Energy, such as light, propagates from the sun, but when it strikes an object such as the Earth, it stops or is reflected. Other small particles propagate through the universe and pass through the Earth unaffected by it, but they also do not affect the Earth.
Gravity, on the other hand, strikes the Earth, it acts on the Earth by pulling the Earth toward the sun, but Gravity continues on out into space without seeming to be slowed down by its interaction with the Earth. How is this possible? It seems there is no way to block gravity. Is it reasonable then to infer that gravity does not therefore propagate? Did Einstein believe it propagated?

2006-11-30 00:22:25 · 3 answers · asked by Math Guy 2

I am at my workbench and bored , so i;m doing a little experiment. I have one allan key and one magnet, when I move the maget close to the allan key there is no attraction, until I get a certain distance away,(say 2 cm's for aguements sake) then the allan key zooms towards the magnet so fast I cannot pull the magnet away fast enough.

This happens as well if i go really really slow, no attraction then bamm, the allan key is stuck to the magnet.
How comes I cant get to a distance where the allan key is slowly attracted to the magnet, so i can pull the magnet away and they both move at the same speed.

2006-11-30 00:05:33 · 8 answers · asked by Anonymous

FULL WAVE RECTIFIER---- WHAT R THE MATERIAL REQUIRED & DIAGRAM & function .

2006-11-29 23:55:06 · 3 answers · asked by Ms. Perfect 2

Light waves can take a photograph or can be seen on the screen of the computer. But How sound waves can scan the baby which is inside the pregnant lady? How the sound waves transform into electromagnetic waves? Are they converted into eletric signals as in the case of radio?

2006-11-29 23:19:22 · 4 answers · asked by sara_swathi m 1

Please show your work. Thank you.

The correct answer should be 1580 N.

2006-11-29 23:08:28 · 2 answers · asked by ANON 1

Your explanation should mention forces on the water and forces on the paddle.

2006-11-29 23:06:32 · 3 answers · asked by ANON 1

2006-11-29 22:30:26 · 6 answers · asked by Steve S 1

2006-11-29 22:28:49 · 10 answers · asked by bobsizzlack 1

i don't remember much about this, but i have the idea that one describes the micro and the other the macro end of the universe. but i also remember hearing that the 2 theories fundamentally disagree with each other. given that the universe is (perhaps) a single whole, how can this be?

2006-11-29 22:08:39 · 6 answers · asked by andrewjames 1

If you jump on the spot at the top of a mountain, will you jump higher than if you were at the bottom of the mountain?

2006-11-29 20:50:24 · 11 answers · asked by eLf 1

a toy boat that is floating in a 3- foot deep aquarium carries a rock
if a 2-foot string is tied to the rock before it is thrown overboard and is thrown
overboard
into water
1. does the boat float higher, lower, or the same, in the water? why?
2. does the lelvel of the water in the aquarium rise, fall, or stay the same? why?

2006-11-29 18:39:18 · 3 answers · asked by Anonymous

2006-11-29 18:14:14 · 12 answers · asked by Anonymous

2006-11-29 18:03:17 · 8 answers · asked by shruti 1