Choose the One Alternative That Best Completes the Statement or Answers

question 60

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-A certain radioactive isotope has a half-life of approximately 1250 years. How many years to the nearest year would be required for a given amount of this isotope to decay to $70 \%$ of that amount?

• A) \(375 \mathrm { yr }\)
• B) \(2171 \mathrm { yr }\)
• C) \(573 \mathrm { yr }\)
• D) \(643 \mathrm { yr }\)

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Definitions:

One-on-one Interaction

Personal and direct communication or engagement between two individuals.

Therapeutic Communication

An intentional form of communication used by healthcare professionals to support, educate, and understand patients.

Trembling

A physical response often caused by fear, anxiety, or cold, characterized by involuntary shaking or quivering of the body or parts of it.

Appearance

The way that someone or something looks to others, encompassing aspects such as style, cleanliness, and presentation.