A black hole is an object with mass, but no spatial extent. It truly is a particle. A black hole may form from a dead star. Such a black hole has a mass several times the mass of the Sun. Imagine a black hole whose mass is eighty-two times the mass of the Sun. (a) Would you expect the period of an object orbiting the black hole with a semimajor axis of 1 AU to have a period greater than, less than, or equal to 1 yr? O greater than O less than equal to (b) Use the equation T2 = 4 TT 2 a3 to calculate this period. GM 0 X The correct answer is not zero. yr