Question

How long does it take (in minutes) for light to reach saturn from the sun, a distance of 1.486 × 109 km?

Answer 1

Formula for speed of light is:

`c= (d)/(t)`
Where:
c=speed of light = 300000 km/s
d=distance
t =time

Rearranging formula for t and calculating:

`t= (d)/(c) \\ \\ t= (1.486*10^(9) )/(300000) \\ \\ t=4953.33s \\ \\ t=82.56min`