Physics - January 2007

PLEASE HELP I WANT TO BUILD ONE FOR MY SCIENCE FAIR PROJECT I NEED WEBPAGES (mutiple) THAT IS THAT TELL ME HOW TO BUILD ONE AND I NEED DETAILS (any webpages that have a sample one would be good but w/e) SO TAHNKS AND PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

2007-01-13 03:52:54 · 2 answers · asked by Anonymous

An elastic string of cross-sectional area of 4 mm2 requires a force of 2.8 N to increase it's length by one tenth. Find the Young modulus for the string.

2007-01-13 03:42:18 · 4 answers · asked by lanklyad 1

A person is standing on the edge of a cliff. He throws a ball vertically up at 8.8mls. After a delay of 1.0s, he drops a second ball. Assume both balls accelerate uniformly at 9.8m/s2 [down]. What distance has been travelled by the second ball when the first ball catches up to it?

So i know initial velocity = 8.8 m/s and acceleration is 9.8m/s2, but what else do i have to find before i can solve this question?

2007-01-13 03:35:46 · 10 answers · asked by jubbablumberin 3

2007-01-13 03:15:51 · 12 answers · asked by faheem 1

2007-01-13 02:52:53 · 8 answers · asked by Anonymous

2007-01-13 02:22:29 · 13 answers · asked by Anonymous

2007-01-13 02:10:29 · 2 answers · asked by Anonymous

2007-01-13 01:17:32 · 7 answers · asked by Galyose 1

Can they be measured or weighted?

2007-01-13 01:16:30 · 15 answers · asked by Anonymous

at present how many laws of thermodynamics are there ?

2007-01-13 01:05:56 · 3 answers · asked by SAI R 1

This is to do with science (energy and electricity.)

2007-01-12 23:58:55 · 8 answers · asked by [x] Ellie The Danca [x] 1

can we get energy from thuner

2007-01-12 23:51:19 · 4 answers · asked by emontazeri 2

About einstein theory of relativity, the E=MC2

2007-01-12 23:02:23 · 7 answers · asked by flongkoy 2

Can nuclear reactions be carried out with elements other than uranium or plutonium? Such as magnesium, iron, or pollonium?

2007-01-12 21:48:45 · 4 answers · asked by formystudies3 1

2007-01-12 21:33:27 · 15 answers · asked by Anonymous

what do they use to measure the wind speed in mph? I know they can measure how fast a car is going or how fast someone throws a baseball with a radar... but what is used to measure the wind speed?

2007-01-12 20:55:50 · 5 answers · asked by penguin 4

I interest in astrophysics and particle physics. Which course should I take in university? How about with nanotechnology, mainly doing research in what field?

2007-01-12 20:24:58 · 4 answers · asked by li mei 3

if a fly was flying in a convertible car from the dashboard to the rear seat at 10 miles per hour and the car was travelling in the other direction at 10 miles per hour, which direction would the fly be going?

2007-01-12 20:16:32 · 5 answers · asked by Anonymous

1^(1/0) = ?
x^(0)=1

2007-01-12 19:34:32 · 13 answers · asked by rajesh bhowmick 2

wouldn't they collide at twice the speed of light? If not why not ?

2007-01-12 19:04:20 · 14 answers · asked by Angela 2

2007-01-12 18:58:09 · 7 answers · asked by nutz 2

2007-01-12 18:49:39 · 8 answers · asked by rajesh bhowmick 2

2007-01-12 18:15:37 · 8 answers · asked by doremodel 1

2007-01-12 18:03:29 · 2 answers · asked by manokk k 1

Even though they may not travel the speed of light, it seems like they must travel pretty fast. Why? What could be their purpose? Do any travel at different speeds?

2007-01-12 17:48:18 · 3 answers · asked by rndyh77 6

Does it change form? & if so what is the transformation called? Sunlight vs flashlight vs laser beam how would each differ if shined into very deep ocean?

2007-01-12 17:30:45 · 8 answers · asked by lngstkgoboom_40mtx 1

If the entire population of the United States forms a human chain by holding hands, how many times can such a chain be wrapped around the earth's equator? I don't have any additional info other than round to the nearest integer.

2007-01-12 17:13:55 · 4 answers · asked by Anonymous

2007-01-12 17:06:23 · 11 answers · asked by Anonymous

2007-01-12 17:03:45 · 5 answers · asked by Anonymous

http://en.wikipedia.org/wiki/Negative_temperature
This article confused the heck out of me; can someone explain this to me?
http://en.wikipedia.org/wiki/Negative_temperature

2007-01-12 16:45:08 · 9 answers · asked by Anonymous