Question

The earth takes 1 year to revolve around the sun at 1 A.U. distance (an astronomical unit = 93,000,000 miles). If a planet were 4 A.U. from the sun, how many years would it take to make 1 orbit?

Answer 1

you can use kepler's third law

\[\frac{ T ^{2} }{ R ^{3} } = constant \]

Answer 2

How would you word that out to be?

Answer 3

What I mean is what does the T and R symbol resemble?

Answer 4

T is period. R is distance.

Answer 5

Is the answer 8 years?

Answer 6

Yes it is.

Answer 7

Thank You! :D