How many meters are there in 6.50 ly? Express your answer using three significant figures.

6.5 ly is equal to 6.15 x 10¹⁶ m

Explanation:

Light year is the unit of length. It can easily be calculated by multiplying the speed of light in vacuum withe no. of seconds in an year. Let us calculate the value of 1 light year in meters.

1 Light Year = (Speed of Light) (Seconds in 1 Year)

1 Light Year = (3 x 10⁸ m/s) (1 year) (365 days/year) (24 h/day) (3600 s/h)

1 Light Year = 9.46 x 10¹⁵ m

Hence, to get the value of 6.5 Light years, in meters, we will multiply both sides by 6.5.

6.5 Light Years = (6.5) (9.46 x 10¹⁵ m)

6.5 Light Years = 6.15 x 10¹⁶ m

OR

6.5 ly = 6.15 x 10¹⁶ m

Therefore, there are 6.15 x 10¹⁶ m in 6.5 ly