Answer:
0.0163 s
Step-by-step explanation:
Distance traveled = 3040 mi
1 mile = 1609.34 m
Distance traveled = 3040 x 1609.34
Distance traveled = 4892406 m
Speed = 300,000,000 m/s
Time = Distance/Speed
Time = 4892406/300000000
Time = 0.0163 s
Therefore, it will take a telephone signal approximately 0.0163 s to travel 3040 mi from coast to coast across the United States