Question

One light-hour is the distance light travels in one hour. the speed of light is about 300,000 km/s (3 × 10^5km/s). if jupiter is 0.72 light hours from the sun, how far is this?

Answer 1

Jupiter is
`7.776*10^8km` away from the sun.

Step-by-step explanation:

The speed of light is
`3*10^5km/s`. This means, since there are 3600 seconds in an hour, the distance light travels in 1 hour is:

`3*10^5*3600= 1.08*10^9km`

and this distance is called the light-hour.

Since Jupiter is 0.72 light-hours away from the Sun, its distance in km from the sun is:

`1.08*10^8*0.72=7.7776*10^8km`

Thus, Jupiter is
`7.776*10^8km` away from the sun.