Question

How long does it take the signal from a local radio station
totravel 20 miles?

Answer 1

Time,
`t=1.07* 10^(-4)\ s`

Step-by-step explanation:

It is given that,

Distance traveled by the signal from a local radio station, d = 20 miles

1 mile = 1609.34 m

Distance, d = 32186.9 m

Speed of the radio signal,
`c=3* 10^8\ m/s`

Let t is the time taken by the signal from a local radio station to travel 20 miles. The speed is given by :

`v=(d)/(t)`

`t=(d)/(c)`

`t=(32186.9\ m)/(3* 10^8\ m/s)`

`t=1.07* 10^(-4)\ s`

So, the time taken by the signal from a local radio station to travel 20 miles is
`1.07* 10^(-4)\ s`. Hence, this is the required solution.