If distance is speed × time and light takes 8 minutes to travel from the Sun to Earth and over 4 hours to travel from the Sun to the planet Neptune, what is the distance from the Sun to Neptune
A)5 AU
B)30 AU
C)30 ly
D)5 ly
E)0.6 ly

Question

Quizplus · Accepted Answer

Let's assume the speed of light to be constant. Using the given formula, we can find the distance from the Sun to Earth:
Distance = speed x time = (3 x 10^8 m/s) x (8 x 60) = 1.44 x 10^11 meters = 1 AU

Now, we can use the same formula to find the distance from the Sun to Neptune using the time taken by light to reach Neptune:
Distance = speed x time = (3 x 10^8 m/s) x (4 x 60 x 60) = 4.32 x 10^12 meters = 30.1 AU (approximately)

Hence, the answer is B, 30 AU.

If Distance Is Speed × Time and Light Takes 8