Question

Earth is the third planet from the Sun, with an average distance of

93,000,000 miles. It takes light about 8 minutes to travel from the Sun
to Earth.
Pluto, a dwarf planet, has an average distance of 3.7 X10° miles
from the Sun. How many times farther from the Sun is Pluto than
Earth? How long does it take light to reach Pluto?

Answer 1

The ratio of the distance of Pluto and the earth to the Sun is 40.

Time taken by light to travel from Sun to Pluto is 5.3 hours.

Explanation:

Distance between Earth an Sun = 93,000,000 miles

Time from Sun to Earth = 8 minutes

Distance beteen Pluto and Sun = 3.7 x 10^9 miles

The ratio of the distance between Pluto and Sun to the Earth and Sun is

`(3.7* 10^9)/(93000000)\\\\=39.8 =40`

Now let the time taken by the light to move from Sun to Pluto is t.

`(93000000)/(8)=(3.7* 10^9)/(t)\\\\t =318.28 minutes = 5.3 hours`