SOLUTION: Hello, Okay I have submitted this problem twice already but I believe that I have figured it out. if the average radius of the orbit of venus is 0.723 AU, then how many years doe

Click here to see ALL problems on Permutations

Question 174051: Hello,
Okay I have submitted this problem twice already but I believe that I have figured it out.
if the average radius of the orbit of venus is 0.723 AU, then how many years does it take for venus to complete one orbit of the sun? use these to figure the problem 28.46years 11.86 years sun to jupiter, 5.2AU
This is how I worked out the problem
v=x/.37793
jupiter11.86/5.2
5.2x=4.4822
x=.86 years to obrit the sun
for some reason that doesn't look right to me because how can you orbit the sun in .86 years is there a such thing?
Found 2 solutions by stanbon, vleith:
Answer by stanbon(57224) (Show Source):
You can put this solution on YOUR website!
If venus is closer to the sun than the earth is it would
not be unreasonable for the orbit to take less than a year.
Cheers,
Stan H.

Answer by vleith(2825) (Show Source):
You can put this solution on YOUR website!
Not clear what this means --> use these to figure the problem 28.46years 11.86 years sun to jupiter, 5.2AU
But here is a link that gives you Kepler's equation for period as a function of distance from the sun. http://csep10.phys.utk.edu/astr161/lect/history/kepler.html
Look down at the bottom to find
where P is the period and R is the distance in AU
For Venus that yields
years
As in your answer, that is less than a year. Which makes sense. The planets closer to the sun orbit faster than earth does. We take a year, so they take less than a year. Planets from Mars on out take longer. here's a page with orbit values for several planets -->http://www.swivel.com/data_columns/show/2202455
And remember, new data says Pluto is not a planet anymore. It is a dwarf planet. --> http://www.askdavetaylor.com/is_pluto_still_a_planet.html
Hope this helps