24b2ikates Please help me thanks During the Cold War, American submarines operat

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24b2ikates

Please help me thanks

During the Cold War, American submarines operated as "lone wolves" at extreme ocean depths for many months at a time. Ordinary radio signals are greatly attenuated at such depths, making communication with the submarines difficult. One way suggested to communicate with the submarines was a program the Navy called Seafarer that used extremely low frequency waves. If the Seafarer transmitter broadcast at 82 Hz, what would the transmitter's quarter wavelength antenna have to be in order to receive the signal?
km

Explanation / Answer

For a quarter wave length antena , the length of the antena is one-fourth of the wave length .

=>L= 0.25*(lambda)

lambda= velocity/(frequency )

velocity of radio waves = 3 * 108 m/s

frequency = 82 Hz

=> L= 914.634 km

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