Background Radiation from Cosmic Rays and Radioactive Nuclei in Our

question 27

Multiple Choice

Background radiation from cosmic rays and radioactive nuclei in our surroundings is about 0.13 rem/year. Suppose we assume this all comes from cosmic rays which have an RBE factor of 1.0. The RBE factor for the most dangerous types of radiation is 20. How many rads of the most dangerous radiation could a 100-year-old person have been exposed to in her lifetime without having gone over the recommended limit of 0.5 rem/year?

• A) 0.37
• B) 0.50
• C) 1.85
• D) 13
• E) 37

---

Definitions:

Demand Decrease

A reduction in the quantity of a product or service wanted by consumers at any given price level.

Production Function

A mathematical relationship expressing the maximum output that can be produced from a given set of inputs in the production process.

Marginal Product

The additional output that results from using one more unit of a production factor, keeping all other factors constant.

Total Output

The complete quantity of goods and services produced by an economy in a given period.