Recent questions in Applied Physics - Physics

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Half Life

At the end of 14 min, 1/16 of Polonium remains. Half life?
13/10/2017

0

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What color is the sky?

What color is the sky?
28/09/2017

5

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Magnetic field

an electron is moving north in a region where the magnetic field is south. the magnetic force in the electron is? 
21/07/2017

1

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Three balls are thrown in to the air simultaneously. What is the acceleration of their centre of mass while they are in motion?

Three balls are thrown in to the air simultaneously. What is the acceleration of their centre of mass while they are in motion? 
09/05/2017

1

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Which particular oil do we use to make the x-ray tube cool??

which particular oil do we use to make the x-ray tube cool??
20/03/2017

1

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Semi conductors

When holes in a p-n-p transistor diffuse through the base, a certain fraction of them recombine with electrons and disappear. Does the fact that Si is an indirect-gap semiconductor improve or ...
01/12/2015

2

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What is reason behind VW cheating the regulators during car emission test?

Why did VW cheat emission tests? Are the standards put up by the regulators practically impossible to reach?
01/10/2015

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Thermometers

which type of liquid is used in thermometers any why?
14/09/2015