Physics - August 2006

Why Dielectric constant of water is greater than silicon?

2006-08-22 08:56:15 · 5 answers · asked by star123 2

2006-08-22 08:49:01 · 9 answers · asked by Anonymous

2006-08-22 08:31:51 · 26 answers · asked by bean1267 1

Why Capacitor is used in electric fan?

2006-08-22 07:32:47 · 11 answers · asked by star123 2

2006-08-22 07:21:17 · 11 answers · asked by goring 6

Here is the scenario:
A jeep is stuck in the mud, my cell phone is dead, so I cant call a tow truck.
All I have in the jeep is a length of rope.
As I look around all I can see are towering trees, but no branches to possibly use as leverage.
I tried pushing the jeep out, but it can only rock back and forth a tiny bit.....
What would you do?

2006-08-22 06:52:33 · 19 answers · asked by Anonymous

In which time,We use Mixed combination of Resistance?
Give me a example.

2006-08-22 06:52:28 · 1 answers · asked by star123 2

A ton of iron, how much does it weigh at the Earth's center? Or a cubic meter of iron or lead? Or a cubic meter of whatever stuff that is now there at the very center?

Please note: According to raw data, a total of 2,727,233 similar questions have been asked so far (in the U.S. alone) -- but similar how? And where are the answers? And were any of the questions so similar as to be exact to this one?

I want the answer to this exact question, but also in a broader sense I'm interested in many similar questions. It's all very exciting, and so I have come to Yahoo-Answers in the spirit of exciting inquiry...

2006-08-22 06:27:41 · 7 answers · asked by Anonymous

2006-08-22 06:25:55 · 32 answers · asked by BINTU 1

2006-08-22 06:23:20 · 1 answers · asked by goring 6

Discret particle dinners?

2006-08-22 06:17:15 · 2 answers · asked by goring 6

okay according to the law of relativity the mass of a body increases when it is traveling at great velocities.. Lets just say that an object is travelin at da speed of light which means dat the mass of the object according to the equation becomes infinite.. if this is so the gravitional field around the body should all so be infinite (F=GMm) so basically v cant travel at that speed...n all electromagnetic waves travel at the speed of light so will this object become an electromagnetic wave or sumthing else or remain unchanged.. help wth dis will u..

2006-08-22 06:04:36 · 15 answers · asked by Anonymous

There's a small Irish high-tech company claiming they discovered a way of creating unlimited free energy. That goes against one of our most fundamental ways of understanding the universe: the principle of conservation of energy that says 'energy can neither be created nor destroyed, it can only change form.'

If they are right it means we would never have to recharge our mobile phones or refuel our cars.

They challenged the scientific community to prove them wrong

The Challenge was published in The Economist magazine.

Here's the link to the company:
http://www.steorn.net/

Here's the news from an accredited media source:
http://www.guardian.co.uk/science/story/0,,1854394,00.html

I am very sceptical about their claim, but if they are right this would be the most bombastic discovery in human history, it would change global economy forever.

What do you think?

2006-08-22 05:58:58 · 9 answers · asked by earlond 1

2006-08-22 05:58:00 · 2 answers · asked by goring 6

Gravity per Einstein equations is the compression of spacetime field?Is compression quantitized?

2006-08-22 05:52:28 · 2 answers · asked by goring 6

2006-08-22 05:48:11 · 19 answers · asked by simplesolo 2

In which time,We use Mixed combination of Resistance?
Give me a example.

2006-08-22 05:42:21 · 2 answers · asked by star123 2

I can`t get to grips with it.

2006-08-22 05:33:36 · 8 answers · asked by CLIVE C 3

Why can't the first stage of liftoff for space vehicles be accomplished by reusable jet propelled launchers rather than the megalift assemblies that we are now using.? It seems that Burt Rutan has the right idea.

2006-08-22 05:26:15 · 3 answers · asked by Anonymous

2006-08-22 05:16:30 · 3 answers · asked by isildor 2

2006-08-22 05:09:30 · 15 answers · asked by ATHeisT 1

In contrast to Niels Bohr where the charge of the electron does not change in his equation?

2006-08-22 05:09:04 · 2 answers · asked by goring 6

2006-08-22 05:06:05 · 8 answers · asked by Great Man 1

2006-08-22 05:02:03 · 2 answers · asked by goring 6

Mass has the dimensions of kilogram in dimensional analysis.;
Energy has the Units of Kilograms times velocity squared =are those dimensions a product of each other?

2006-08-22 04:50:29 · 1 answers · asked by goring 6

Please give me details on projectile also.

2006-08-22 04:43:15 · 5 answers · asked by shom_abraham 1

i spent 4 hours on this Q,can u help me how i can got this result???

The banks of a river 40 m wide are parallel and A and B are points on opposite banks. The distance AB is 50 m and B is downstream of A. There is a constant current of 4 m/s flowing.

i.What is the minimum speed of the at which a motor boat must be able to move in still water in orderto cross the river from A to B?Answer 3.2m/s)

ii.If a boat sails from A to B with constant velocity in 7.5 s, find the speed of the boat and the direction at which it is steered?(ans 5/3m/s)
iii.Whilst this boat is sailing from A to B, a man runs across a bridge which is at right angles to the banks of the rivern. To this man, the boat appears o be traveling parallel to the river banks. Find the speed at which the man is running.(answer 5/3)

2006-08-22 04:40:25 · 3 answers · asked by Anonymous

help

2006-08-22 04:22:41 · 19 answers · asked by Alister 2

Given a system of two masses m1 and m2 which are attached by a very light string over a solid pulley of mass M and radius R. The smaller mass m1 is held at the ground level. If the m2 is suspended h meters above the ground what will the velocity be of mass m2 as it hits the ground (after the mass m1 is released).

2006-08-22 04:16:55 · 6 answers · asked by Edward 7

If the center of a sphere such as the Earth was not the center of gravity then what would be different?

2006-08-22 04:05:38 · 10 answers · asked by Anonymous