Determine the Decay Rate for a Radioisotope Sample with an Activity

question 87

Multiple Choice

Determine the decay rate for a radioisotope sample with an activity of 12 microcuries. [1 curie = 3.7 * 10¹⁰ disintegrations/s]

• A) 4.2 * 10⁵/s
• B) 4.4 * 10⁵/s
• C) 4.6 * 10⁵/s
• D) 4.8 * 10⁵/s
• E) None of the above

---

Definitions:

Direct Labor Cost

The wages or salaries paid to workers directly involved in the production of goods or services.

Factory Overhead Cost

Indirect manufacturing costs that are not directly tied to the production of goods, such as maintenance, utilities, and rent of the production facility.

Period Costs

Expenses that are not directly tied to the production process and are instead charged to expenses as incurred, typically administrative or selling expenses.

Operating Costs

Expenses associated with the day-to-day functions of a business, excluding costs related to producing goods or services.