1. The problem statement, all variables and given/known data Given that Jupiter has a mass of 1.9x10^27 kg, and the sun has a mass of 1.99x10^30 kg: a) Calculate the value of Kepler's constant for Jupiter. b) If Jupiter's orbital period is 11.89 Earth years, calculate the average radius of its orbit. 2. Relevant equations K = Gmp/4pi^2 = r^3/T^2 11.89x365x24x3600 = 374963040 3. The attempt at a solution For a) Kjupiter = Gmp/4pi^2 (6.6x10^-11)(1.9x10^27)/4pi^2 = 3.21x10^15 m^3/s^2 b) Ksun = Gmp/4pi^2 ksun = (6.67x10^-11)(1.99x10^30)/4pi^2 3.36x10^18 m^3/s^2 Ksun=r^3/T^2 Therefore: r^3 = Ksun*T^2 r = cubed rt. of Ksun*T^2 r = cubed rt. of (3.36x10^18)(374963040)^2 r = cubed rt. of 4.724068653x10^35 r = 7.8x10^11m I am really unconfident about these answers, can someone tell me if I am one the right track or should give up on Physics? Thank you in advance.