Answer it fasttttttttt
Attachments:
Answers
Answered by
8
Given,
Distance of the star from Earth, d= 8.1 × 10^13 km = 8 × 10^13 × 10^ 3 m = 8.1 × 10^16 m
( 1 km = 10^3 m/s)
Speed of light, c = 3 × 10^8 m/s
Time taken by the light to reach the star = ?
We have,
Speed = Distance / time
=> Time = Distance / Speed
•°• Time taken = (8.1 × 10^16)/(3×10^8)
= 8.1 × 10^8 × 10^8 / 3×10^8
= 8.1 × 10^8/3
= 81 × 10^8/30
= 81/3 × 10^7
= 27 × 10^7 sec
= 27/10 × 10 × 10^7
= 2.7 × 10^8
Answered by
0
Answer:
_________________________
ab yeah id toh mil hi nai rahi....
jaane do...
koi nai
Similar questions