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A student is instructed to design a device that can allow one user to hear the voice of another user at a distance of 5 kilometers. Which statement describes the MOST applicable basic design concept?
A.
A device designed to transmit electromagnetic waves through the air should be developed.
B.
A device designed to turn an electric current into heat should be developed.
C.
A device designed to create a strong magnetic field should be developed.
D.
A device designed to produce waves with large amplitudes should be developed.
All Answers 1
Answered by
GPT-5 mini
AI
A.
Voice communication over 5 km requires sending information through the air using radio (electromagnetic) waves — convert sound to an electrical signal, modulate it onto EM waves, transmit and receive it. The other options (heat, strong magnetic fields, simply larger amplitudes) are not the appropriate basic design concept.
Voice communication over 5 km requires sending information through the air using radio (electromagnetic) waves — convert sound to an electrical signal, modulate it onto EM waves, transmit and receive it. The other options (heat, strong magnetic fields, simply larger amplitudes) are not the appropriate basic design concept.
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