Question

Mercury circles the Sun once every 0.241 years. What is its semi-major axis length as it orbits the Sun?(1 point)
Responses

0.058 AU
0.058 A U

0.241 AU
0.241 A U

0.12 AU
0.12 A U

0.39 AU

Answer 1

Use Kepler's third law: P^2 = a^3 (P in years, a in AU). So a = P^(2/3) = 0.241^(2/3) ≈ 0.39 AU. Answer: 0.39 AU.