How Long Does It Take for 5

question 9

Multiple Choice

How long does it take for 5.05 g of a radioactive isotope to decay to 0.0505 g if its half-life is 20,000 y?

• A) 205,000 y
• B) 505,000 y
• C) 313,000 y
• D) 331,000 y
• E) 133,000 y

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Definitions:

Man Ray

An American visual artist who spent most of his career in France and is best known for his contributions to the Dada and Surrealist movements through photography and avant-garde images.

Synthetic Cubism

Synthetic Cubism is the later phase of Cubism, characterized by simpler shapes, brighter colors, and the incorporation of mixed media and collage elements, evolving from the analytical approach of its earlier form.

Stuart Davis

An American painter known for his vibrant, abstract works that blended the principles of Cubism with American pop culture and jazz influences.

Resettlement Administration

A New Deal agency created in 1935 to relocate struggling urban and rural families to communities planned by the federal government.