20. Sound: A radio station broadcasts their signal with a wavelength of 3.5 micrometers (3.5 x 10^-6 m). Although your radio will translate this signal into sound energy, a) Determine the frequency of the signal and b) Explain why you can not hear the radio signal directly? *
20. Sound: A radio station broadcasts their signal with a wavelength of 3.5 micrometers (3.5 x 10^-6 m). Although your radio will translate this signal into sound energy, a) Determine the frequency of the signal and b) Explain why you can not hear the radio signal directly? *
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