(A) Calculate the rotational kinetic energy (in J) of Neptune on its axis. (Assume its mass to be 1.03 ✕ 10^26 kg, the period about its axis to be 16.0 h, and its diameter to be 49500 km.) (b) What is the rotational kinetic energy (in J) of Neptune in its orbit around the Sun? (Assume its distance from the sun to be 4.50 ✕ 10^9 km and its period about the sun to be 60200 days.)