Question

A radio announcer's voice is transmitted via radio waves a distance of 469.06 km. How much time, in microseconds, will it take to transmit the wave over this distance?

Answer 1

Assuming the wave is being transmitted on the vacuum, we know that the velocity of an electromagnetic wave on vacuum is c. We can use the following relation:

`v=(\lambda)/(T)\Rightarrow T=(\lambda)/(c)=(469.06*10^3)/(3*10^8)=1.5635ms=1563.5\mu s`

Thus, our final answer is T=1563.5us