How long does it take the signal from a local radio station to travel 20 miles?
A. 2.8 s
B. 108 ms
C. 38 ms
D. 108 ms
Answer:D
How long does it take the signal from a local radio station to travel 20 miles?
A. 2.8 s B. 108 ms C. 38 ms D. 108 ms