Cobalt-60 Is a Beta Emitter with a Half-Life of 5

question 112

Multiple Choice

Cobalt-60 is a beta emitter with a half-life of 5.3 years. Approximately what fraction of cobalt-60 atoms will remain in a particular sample after 26.5 years

• A) 1/5
• B) 1/16
• C) 1/26
• D) 1/32
• E) 1/64

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Definitions:

Standard Form

A way of writing numbers using the digits 0-9, where the position of each digit signifies its value; also refers to a specific form of linear equations.

Imaginary Unit

The imaginary unit, denoted as \(i\), is a complex number that satisfies the equation \(i^2 = -1\).

Standard Form

A way of writing numbers using the digits 0-9, with each digit having a place value; in algebra, it refers to a specific way of writing equations.

Imaginary Unit

The imaginary unit, denoted as \(i\), is defined as the square root of \(-1\), used in complex number arithmetic.