riverviewfarm2133
14.07.2019 •
Chemistry
Which of the following devices is associated with the reception of radio signals? a. transmitting antenna b. demodulator c. oscillator d. microphone what is the true answer . i need the correct answer
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Ответ:
The answer is D. Microphone converts sound waves to electrical signals. The microphone has an aperture that vibrates with sound waves. The aperture is attached to a thin coil of wires that is wound around a magnet. Therefore, as the aperture moves, so does the coil of wires. An electric current is consequently induced through magnetic induction.
Ответ:
B: reflecting
Explanation:
Sound waves can bounce off smooth