Suppose a transmitter puts a 50-W signal into a directional antenna with a gain of 1.64. Determine the power density at 30 miles away. o a 10.78 mW/m² Ob. 4.16 nW/m? o. 6.57 mW/m? od. 3 nW/m? oe. 7.25 mw/m?

Suppose a transmitter puts a 50-W signal into a directional antenna with a gain of 1.64. Determine the power density at 30 miles away. o a 10.78 mW/m² Ob. 4.16 nW/m? o. 6.57 mW/m? od. 3 nW/m? oe. 7.25 mw/m?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter34: Electromagnetic Waves

Section: Chapter Questions

Problem 34.7P: Suppose you are located 180 in from a radio transmitter. (a) How many wavelengths are you from the...

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Question

Suppose a transmitter puts a 50-W signal into a directional antenna with a gain of 1.64. Determine the power density at 30 miles away.
10.78 mW/m?
o b. 4.16 nW/m?
O. 6.57 mW/m2
od. 3 nW/m?
O e. 7.25 mW/m?

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