Problema Solution
The distance from a star to a planet is 7.4 • 1018 m. How long does it take light, traveling at 1016 m/year, to travel from the star to the planet?
Answer provided by our tutors
Distance = 7.4*10^18
Velocity = 1016 m/year
So, time taken = 7.4*10^18/1016 = 7.28*10^15 years