A Radioisotope Placed near a Radiation Detector Registers 80 Counts

question 109

Essay

A radioisotope placed near a radiation detector registers 80 counts per second. Eight hours later the detector registers 5 counts per second. What is the half-life of the radioisotope?

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Definitions:

American Railway Union

A short-lived but significant labor union in the United States, founded in 1893 by Eugene V. Debs, that sought to unify all railroad workers, regardless of craft or job function, into one organization.

Pullman Cars

Luxury railway cars that were introduced in the 19th century, offering sleeping accommodations and other amenities, revolutionizing long-distance train travel.

Gilded Age

A period in the late 19th century marked by rapid economic growth, technological advancement, and ostentatious wealth amidst widespread social issues in the United States.

Farmers

Individuals engaged in agriculture, raising living organisms for food or raw materials.