Physics - January 2007

i have to make a report on any topic of physics and i want to make it on bernoulli's theorem i wnt it's equation, proof, alternative proof, and some pages on it

2007-01-21 23:54:09 · 8 answers · asked by Anonymous

larger, smaller, comes forward or gets obscure

2007-01-21 23:35:36 · 8 answers · asked by Arif 1

a driver travelling at 70km/hr tries to stop the car and finds that the breaks have failed. the emergency break is then pulled and the car comes to a stop in 120m. find the car's decceleration.


with solution please...thnks

2007-01-21 22:58:29 · 2 answers · asked by antoinekingx 1

2007-01-21 22:42:06 · 15 answers · asked by GREGNJEN 2

Trying to read an article about flaws in Eintein's relativity theory (which I just about understand) and they mention string theory...now I'm utterly and completely lost!

2007-01-21 22:20:28 · 8 answers · asked by Stef 4

what would happen eventually?? im talking about non-stoping we go faster and faster what would happen eventually to us

2007-01-21 22:06:05 · 5 answers · asked by Anonymous

2007-01-21 22:03:21 · 3 answers · asked by thirteen 1

please

2007-01-21 21:55:34 · 2 answers · asked by antoinekingx 1

2007-01-21 21:48:14 · 6 answers · asked by antoinekingx 1

and then we go much faster and faster what would happen? time will stop? and faster...time will go backwards??? where is the law of the physics here??? we will dissaper? open a warpwhole? open space?? or its just IMPOSSIBLE something or what ever , could go faster than light???? being light the fastest speed in this universe. believe it or not someday we are gonna be able to go back in time.

2007-01-21 21:36:02 · 16 answers · asked by Anonymous

i was just wondering, if einstein travelled on a beam of light while at the same time shining a beam of light, the speed of light isn't like doubled, and c+c=c, so what would happen if say i were to travel on a beam of light shining a beam of light in the other direction, would there still be light emitting from the beam being observed by someone else? what would c-c=?

2007-01-21 21:32:13 · 6 answers · asked by sh 1

I know it has something to do with quantum mechanics, but what is it supposed to represent.

2007-01-21 21:29:17 · 4 answers · asked by Anonymous

2007-01-21 21:28:49 · 1 answers · asked by exspider_9486 2

2007-01-21 21:11:08 · 6 answers · asked by ritu 1

You don't fall off a cycle as far as you are rinding it, but the moment you stop you tend to lose your balance. In fact the slower you go the more difficult it is to mauntain balance and it is easier the faster you go. There are people who can balance on a still cycle, but that is with a lot of practice and difficulty, and always with the front tyre set perpendicular to the plane of the cycle.

2007-01-21 20:46:51 · 9 answers · asked by R.P. Pillai 1

2007-01-21 20:02:40 · 8 answers · asked by Jay C 1

1.describe the acceleration free fall
2. what is a freely falling body?
3. what is the terminal velocity?



thnks in advance!

2007-01-21 19:55:17 · 1 answers · asked by antoinekingx 1

albert is riding his scooter at a velocity of 80 km/hour, when he sees an old woman crossing the road 45m away. he immediately steps hard on the breaks to get the maximum decceleration of 7.5 m/s^2. how far will he go before stopping? will he hit the old woman or not?



please answer...with solutions..

2007-01-21 19:54:57 · 3 answers · asked by antoinekingx 1

1.Explain how Kepler's 3rd law and Newton's law of universal gravitation predicted a ring of satellites that are:
a) directly above the equator.
b) all at the same height.

(this ring of satellites does now exist, but Arthur C Clarke predicted it in this way)

You should use any reasonable assumptions about the usefulness and logistics of satellite communication (hint: this would be a good place to start your reasoning).

2007-01-21 19:31:47 · 1 answers · asked by Anonymous

Say we look at the rising or setting sun and then we close our eyes.We see that the shape of the Sun remains in our vision,but the colors change,red,orange,green,blue and finally black.This is true for any lighted object.This is sort of resonance of vision.I would like to know why this happens?

2007-01-21 19:16:41 · 3 answers · asked by Anonymous

2007-01-21 18:25:12 · 1 answers · asked by Anonymous

explain why!

2007-01-21 18:17:25 · 8 answers · asked by Lyno V 1

does size and shape affect gravity?

2007-01-21 18:15:10 · 8 answers · asked by 234retgf 3

2007-01-21 17:43:28 · 7 answers · asked by aliah_natasya2003 1

A rocket, weighing 4.36 x 10^4 N, has an engine that provides an upward force of 8.90 x 10^5 N. It reaches a maximum speed of 860 m/s. How long must the engine burn in order to reach this speed?

I know that the net force is 846,400 N and that the time is equal to the change in momentum times velocity over that numerical value. But I am not sure how to solve it. Any help is appreciated, and thank you in advance.

2007-01-21 17:37:58 · 1 answers · asked by A.R 2

It takes 30 seconds for the 480 W toaster to toast a piece of bread. How many electrons were used?

2007-01-21 17:21:21 · 2 answers · asked by Anonymous

2007-01-21 17:10:07 · 4 answers · asked by rr 3

I know of the wave/particle duality. My question is since light has "no mass" they have recently been able to stop or slow down light momentarily in special gas chambers. How is the light able to go back to its original speed with no help since a photon is technically still composed of matter... wouldn't you need infinite amount of energy?

2007-01-21 17:05:11 · 4 answers · asked by pezeveng3319 2

drawing

2007-01-21 16:59:23 · 1 answers · asked by cristina m 1

a, propagating in the negative x direction

b, out of phase by 90 degrees

2007-01-21 16:58:20 · 1 answers · asked by dopplerjeff5000 2