Answer:

Step-by-step explanation:
Radio waves travel at the speed of light
= Speed of light =

= Distance between two radios = 46 km
= Speed of sound in air = 348 m/s
= Distance sound travels across the newsroom = 2.1 m
Time taken by the radio signal to reach the required location is

Time taken by sound to reach the required location is

The time difference is

The difference in time that the message is received is
.