The Half-Life of a Certain Radioactive Substance Is 8 Years

question 61

Multiple Choice

The half-life of a certain radioactive substance is 8 years. What is the yearly percentage decay rate for this substance?

• A) 6.51%
• B) 8.3%
• C) 9.22%
• D) 6.25%

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Definitions:

Warranty

A guarantee given to the purchaser by a manufacturer regarding the condition of its product and the promise to repair or replace it within a specified period of time.

OEM

Original Equipment Manufacturer; a company that produces parts and equipment that may be marketed by another manufacturer.

No-crank Condition

A situation where an engine does not turn over or crank when the ignition key is turned, indicating a failure in the starting system.

Discharged Batteries

Batteries that have been depleted of their stored electrical energy.