SMC103Y1 Chapter : SMC291 Albarran and Pitts Reading

Long-distance telephone communication utilizes transmission of electromagnetic signals in the microwave part of the spectrum. How long does it take to transmit a signal cross country, a distance of 3996 km?

Long-distance telephone communication utilizes transmissionofelectromagnetic signals in the microwave part of the spectrum.Howlong does it take to transmit a signal cross country, adistanceof 4064 km?

Long-distance telephone communication utilizes transmission ofelectromagnetic signals in the microwave part of the spectrum. Howlong does it take to transmit a signal cross country, a distance of4778 km?