Question

the distance of a Galaxy from the Earth is 5.6 *10^ 25m Assuming the speed of light to be 3 * 10^8 m/ s find the time taken by the light travel the distance

Answer 1

t = s/v
t = 5.6×10^25/3×10^8
t = 1.866×10^17.

Answer 2

Answer:

1. y=d/s
2. y=5.6*10^25/3*10^8
3. y=1.866*10^17
4. y=1.87*10^17