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In 2005, Canada Was Ranked Number One in the World

question 10

True/False

In 2005, Canada was ranked number one in the world on a list of countries perceived to be free of corruption.


Definitions:

Radioactive Decay

The process by which an unstable atomic nucleus loses energy by emitting radiation.

Half-life

The time required for half of the atoms in a radioactive substance to undergo decay, a characteristic constant for each radioactive isotope.

Half-life

The time required for half the atoms of a radioactive substance to decay into a stable form.

Cesium-137

A radioactive isotope of cesium with a half-life of about 30.17 years, commonly used in medical applications and industrial gauges.

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