Answer:
Step-by-step explanation:
For all of these, we will say T^2= R^3 because both the comet and earth rotate around the same central object (the sun).
For Wirtanen. We are given T^2 = 29.50 and since we know T^2= R^3;
R^3= 29.50
since
we just take the square root and find; T=5.43 years
For Wild 2 we are given
T= 6.41 years which means T^2 = 41.0881 and therefore r^3 also = 41.0881
since
take the cubed root and get 3.45 AU
Finally for Hailey we are given r =17.83 Au we will now cube that to get r^3= 5668.32 and therefore T^2 also equal 5668.32
since
we just take the square root and find; T=75.2882 years
Hope this helps