Questions

Sania Mirza and Cara Black

When exposed to certain frequencies of radiation, such as radio waves, the subatomic particles called electrons that orbit an atom's nucleus will "jump" back and forth between energy states. Clocks based on this jumping within atoms can therefore provide an extremely precise way to count seconds.It is no surprise then that the international standard for the length of one second is based on atoms. Since 1967, the official definition of a second is 9,192,631,770 cycles of the radiation that gets an atom of the element called caesium to vibrate between two energy states.

The United States subprime mortgage crisis was a nationwide financial crisis, occurring between 2007 and 2010, that contributed to the U.S. recession of December 2007 –June 2009.It was triggered by a large decline in home prices after the collapse of a housing bubble, leading to mortgage delinquencies and foreclosures and the devaluation of housing-related securities.

The system board is also known as the Mother board, Main circuit board, Baseboard or logic board.

The speed of all the electromagnetic radiation are always   same   and   equal   to   the numerical value 3 x 10^8m/sec.

Panama Canal is called the 'Gateway of the Pacific'.