Electromagnetic Waves Are Radiated Uniformly in All Directions from a Source

question 46

Multiple Choice

Electromagnetic waves are radiated uniformly in all directions from a source. The rms electric field of the waves is measured 35 km from the source to have an rms value of 0.012 N/C. Determine the average total power radiated by the source.

• A)5.9 × 10³ W
• B)9.0 × 10³ W
• C)2.4 × 10⁴ W
• D)6.3 × 10⁴ W
• E)1.6 × 10⁵ W

---

Definitions:

U.S. Agriculture

The sector of the United States economy that deals with the production of plants and animals for food, fiber, and other products.

Farm Share

The portion of the final retail price of agricultural products that goes back to the farmers.

U.S. GDP

U.S. Gross Domestic Product reflects the total monetary or market value of all the finished goods and services produced within the United States' borders in a specific time period.

Income Inelastic

A characteristic of a good whose demand does not significantly change as the income of consumers changes.