Question

A wireless signal is sent to earth from a spacecraft.this signal reaches the earth in 300sec.calculate the distance of the spacecraft from the earth .given speed of the signal =3*10^8 meter per second

Answer 1

it take time to reach =300 sec hence multiply it with 300 in formula so it will be =9*10^10 

Answer 2

Explanation:

It take time to reach = 300 sec hence multiply it with 300 in formula so it will be 9*10^10..

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