A Radio Transmitter Is Operating at an Average Power Of 4.00

question 173

Multiple Choice

A radio transmitter is operating at an average power of $4.00 \mathrm {~kW}$ and is radiating uniformly in all directions. What is the average intensity of the signal $8.00 \mathrm {~km}$ from the transmitter?

• A)4.97 ?W/m²
• B)2.49 ?W/m²
• C)0.00497 W/m²
• D)0.00249 W/m²

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